Dissertations / Theses: 'Aquaponics'

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Cook, Sarah Ann, Jonathan Lepage, and Maria Guzman. "Portable Aquaponics." Thesis, The University of Arizona, 2012. http://hdl.handle.net/10150/243915.

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Increasing demands on our natural resources require unique solutions. Our design combines an aquaculture subsystem with a hydroponics subsystem to maximize efficiency and fully utilize all resources with minimal waste and environmental impact. Current aquaponics designs use either rectangular raceways or circular tanks for the aquaculture subsystem. Circular tanks are very common and offer the advantage of efficient solid waste removal. Solids can be pushed down towards a center drain and flushed out of the system easily with rotational flow within the tank. Raceway designs are also used extensively and offer the advantage of better utilization of floor space. Our design brings these two configurations together by creating circular flow in 3 hydraulically separate units within one rectangular raceway. In this way, solids removal is maximized and floor space is utilized fully. Our system is also designed to be fully portable on a flatbed trailer so that it can be used as an education exhibit around the region.

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Goodman, Elisha R. (Elisha Renee). "Aquaponics : community and economic development." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/67227.

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Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 2011.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 97-100).
This thesis provides a cash flow analysis of an aquaponics system growing tilapia, perch, and lettuce in a temperate climate utilizing data collected via a case study of an aquaponics operation in Milwaukee, Wisconsin. Literature regarding the financial feasibility of aquaponics as a business is scant. This thesis determines that in temperate climates, tilapia and vegetable sales or, alternatively, yellow perch and vegetable sales are insufficient sources of revenue for this aquaponics system to offset regular costs when grown in small quantities and when operated as a stand-alone for-profit business. However, it is possible to reach economies of scale and to attain profitability with a yellow perch and lettuce system. Moreover, there may be ways to increase the margin of profitability or to close the gap between income and expense through such things as alternative business models, value adding, procuring things for free, and diversifying revenue streams. Any organization or individual considering an aquaponics operation should conduct careful analysis and planning to determine if profitability is possible and to understand, in the instance that an aquaponics operation is not profitable, if the community and economic development benefits of the system outweigh the costs. Keywords: aquaponics, fish, tilapia, perch, lettuce, farming, closed-loop systems, community development, economic development, cash flow analysis, sustainability, economic viability, hydroponics, recirculating aquaculture systems, integrated aquaculture, integrated agriculture, worker-owned cooperatives, agroecology.
by Elisha R. Goodman.
M.C.P.

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Hendeberg, Martin. "Allotment Aquaponics : Synthesis of the two concepts allotment garden and aquaponics in conjunction with existing apartment buildings." Thesis, Umeå universitet, Arkitekthögskolan vid Umeå universitet, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-148075.

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Mangmang, Jonathan S. "Plant growth promotion by rhizobacteria in aquaponics." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/14863.

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Wastewater or fish effluent (FE) from freshwater aquaculture can be a good and cheap liquid fertiliser for plants. However, while it represents a good source of nutrients to support plant growth in a system called aquaponics, it appears that its use needs to be optimised to take full advantage of the potential benefits. Apart from mineral amendments, the use of beneficial microorganisms that can have a direct impact on plant growth and nutrient utilisation could be a promising option. Plant growth promoting rhizobacteria (PGPR) are a group of rhizospheric bacteria, when introduced in association with the host plant at optimum density, can enhance plant growth and health. One well-known and versatile PGPR is Azospirillum brasilense that has numerous beneficial effects on plants. The production of phytohormones by the bacterium has been proposed as one of the major mechanisms responsible for the plant growth promoting effects observed in plants inoculated with Azospirillum. Hence, this PGPR could be a valuable input in vegetable production under an aquaponics system. In addition, despite the widespread studies conducted with this PGPR in various crops, there is no published report on vegetables fertilised with fish effluent or under an aquaponics system. This study focuses on evaluating the role of PGPR, particularly A. brasilense, on the growth and development of selected vegetable crops fertilised with fish effluent and using an aquaponics system. Strains of A. brasilense Sp7, Sp7-S and Sp245, Herbaspirillum seropedicea and Burkholderia phytofirmans PsJNT were used to inoculate seeds and/or seedlings by soaking and/or drenching. Inoculated and uninoculated seeds and seedlings were germinated and raised in controlled growing cabinets and a greenhouse, respectively. PGPR-inoculated vegetable seeds generally germinated faster and had better early seedling growth than uninoculated controls. Cucumber seeds inoculated with strains Sp7, Sp245 and H. seropedicea exhibited increase in germination percentage and shoot length by 9 and 20%, respectively, while all PGPR improved the germination vigour index, and enhanced length and weight of seedling roots by 25 and 23%, respectively. In tomato, Sp7-S enhanced the germination value, while most PGPR, except Sp7, significantly improved the germination vigour, root length (28%) and weight (37%) with superior vigor. In lettuce, Sp7-S, Sp245 and H. seropedicea inoculation resulted in longer roots (26%). Germination vigour was also improved by inoculation, except for B. phytofirmans. This improved germination and early seedling growth characteristics may influence future crop establishment and production. Of the two laboratory-based inoculation methods used, soaking appeared to be a better technique for enhanced early seedling growth by strains of A. brasilense. This effect could be related to their unique metabolic characteristics of the strains. The growth promoting effects of A. brasilense strains on the early seedling growth of vegetables varied between the bacterial strains and crop species, In particular, strains Sp7-S and Sp245 strongly enhanced root (85%) and shoot (75%) growth, germination value and vigour in tomato when inoculated by soaking. Sp245 increased endogenous plant IAA (indole-3-acetic acid) content of cucumber and lettuce by up to 100%, irrespective of inoculation method. This work demonstrates that the strains can be used for inoculation within the studied range of cell concentrations with or without plant growth promoting (PGP) effects. However, strain Sp7 appeared to be more influential at lower inoculum concentrations (about log10 6), while Sp7-S and Sp245 at log10 7 cfu mL-1 or higher. For instance, cucumber seeds inoculated with Sp7 log10 8 and 6, Sp7-S and Sp245 log10 8 and 7 cfu mL-1 increased seedling growth, vigour index and endogenous plant IAA by up to 55%. In lettuce, the inoculation with log10 6 of Sp7, log10 7 and 6 of Sp7-S, and log10 8 and 7 of Sp245 yielded superior seedling growth with improved seedling vigour, while log10 7 and 8 of Sp7 and Sp7-S, respectively, increased plant IAA concentration by more than 20%. In tomato, Sp7 at log10 6, Sp7-S and Sp245 at log10 7 enhanced the root biomass, while inoculation with all concentrations of Sp7 and Sp7-S, and log10 8 of Sp245 significantly increased plant IAA content by up to 300%. The inoculation with the bacterial cell suspension exerted more beneficial effects on the early seedling growth, vigor and endogenous plant IAA. In cucumber, seeds inoculated with bacterial cell and those treated with IAA solutions produced longer roots and shoots by 163 and 60%, respectively. Seedlings also exhibited superior vigor. These treatments, together with culture supernatant, and combined cell and supernatant, also increased endogenous plant IAA content, in which the combined cell and supernatant produced up to four-fold greater plant IAA concentrations. In lettuce, seeds inoculated with cell suspension produced longer roots (86%) with superior seedling vigour and elevated plant IAA. In tomato, inoculation with cell suspension and treatment with IAA solutions enhanced length of roots length by up to 52 and 188%, respectively, while all treatments significantly increased the plant IAA content by 70%. These results also demonstrate that bacterial cell suspension and combined cell and supernatant showed consistent effects on the expression of plant IAA. This work suggests that the endogenous IAA levels in the seeds during germination have been altered by the activity of live bacteria and phytohormones present in the supernatant. The altered root morphology of the seedlings due to A. brasilense inoculation might have enhanced the capacity of roots to absorb water and essential minerals leading to enhanced plant growth and metabolic activity. For instance, inoculated cucumber seedlings produced longer roots (23%), greater root biomass (19%), higher total phosphorus (15%), endogenous plant IAA (101%) and peroxidase activity (134%). In lettuce, inoculation increased root length (22%), peroxidase activity (53%) and plant IAA (38%). In addition, strain Sp7 enhanced the chlorophyll and protein contents by 25 and 42%, respectively. In tomato, inoculation resulted in longer roots (67%), larger leaves (22%), higher dry matter accumulation (33%), protein (15%) and endogenous plant IAA (94%) contents. Taller seedlings (12%) with larger stems (15%) and more developed leaves (9%) with greater fresh biomass (18%) were observed with Sp7 inoculation, while two-fold increase in peroxidase activity due to strain Sp245 was detected. On the other hand, inoculated basil seedlings grown in soil produced longer roots (90%), taller seedlings (19%) with more (25%) and larger (61%) leaves, which resulted in greater seedling biomass (61%) and phosphorus content (3%), and higher peroxidase activity (122%) particularly for those inoculated with Sp245 and Sp7, respectively. These plant growth promoting effects were also observed in basil grown in an aquaponics system. These include larger stems and leaves (25%), fresh weight yield (17%), peroxidase activity (73%), phosphorus (5%) and protein (23%) contents due to inoculation. The amount of endogenous plant IAA (27%) and chlorophyll (13%) contents were also increased by Sp7 and Sp7-S inoculation, respectively. This further suggests that A. brasilense could be a valuable agent to help maximize the usefulness of fish effluent or wastewater from freshwater aquaculture for vegetable seedling production. The 16S rDNA terminal restriction fragment length polymorphism (T-RFLP) analysis revealed that inoculation with A. brasilense has no adverse effect to the existing rhizobacterial communities (measured by the changes in the distribution of detectable operational taxonomic unit (OTU) (represented by TRF)) in the root rhizosphere of vegetables (i.e. lettuce, cucumber and basil) grown under different systems (i.e. sterile artificial substrate, soil and aquaponics). This highlights that this PGPR did not cause disturbance to the resident microbial communities or imbalance of the normal functioning of the system. In aquaponics, the presence of a substantial density of A. brasilense strains in the root rhizosphere of basil and the enhanced plant growth and physiological parameters of inoculated basil may imply that Azospirillum have successfully established a beneficial association with the existing bacterial populations. Moreover, this study demonstrates the potential of Azospirillum to be a practical agent for enhancing plant growth and development of vegetables fertilised with fish effluent and under aquaponics system. Directing future research endeavors to better understand the basic mechanisms occurring in the Azospirillum-plant interaction rather than exploring large scale application of this PGPR would support further development of the bioinoculant technology.

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Gigliona, Julia. "Implementation of a Biogas-system into Aquaponics : Determination of minimum size of aquaponics and costs per kWh of the produced energy." Thesis, Mittuniversitetet, Avdelningen för ekoteknik och hållbart byggande, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-25280.

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Aquaponics might be one solution to produce food in a more sustainable way in the future. Aquaponics combines aquaculture and hydroponics in a way that the disadvantages of one system become the advantages of the other one. The nutrient rich excess water from the fish tank is used for plant growth, while the plants are used as biofilter to clean the water for the fish. Further closed loops can be created by using plant-residues, sludge and food wastes as raw materials for a biogas digester. With a combined heat and power plant (CHP) the produced methane can be used for heat and electricity production needed by the aquaponics. This report determines if such implementation can lead to reduced overall running costs and which size the aquaponics should have. As example location Sweden is chosen.It shows that the methane demand of a CHP requires a minimum size of the biogas digesters and aquaponics. In the aquaponics at least 50 t of fish have to be bread with a complementing grow bed area of 800 - 900 m2. In total the aquaponics system contains 1000 m3 water. The Energy produced by the CHP will not cover totally the energy demand of the aquaponics-system and should be complement by energy from other sources (e.g. solar cells, wind turbines) if there is no access to a stable external energy supply. Energy produced by the CHP has an average price between 1 - 2.1 kr/kWh. If no CHP is implemented, there is no minimum size required for the aquaponics- and biogas-system and the produced methane can be used for heating and cooking.

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Boxman, Suzanne. "Resource Recovery Through Halophyte Production in Marine Aquaponics: An Evaluation of the Nutrient Cycling and the Environmental Sustainability of Aquaponics." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5915.

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Aquaculture, the farming of aquatic animals and plants, is an important component of global food production, which supplies a nutritious protein source for millions of people. Interest in improving the sustainability of aquaculture has led to the development of aquaponics in which fish production is combined with plant production to create zero-discharge systems. A need for more fundamental science and engineering research on marine aquaculture and growing interest in production of halophytes motivated this novel research on marine aquaponics. One objective was to evaluate the growth and nutrient removal capacity of halophytes in marine aquaponics. Bench-scale studies were conducted to determine the best methodology to grow the halophytes sea purslane (Sesuvium portulacastrum) and saltwort (Batis maritima). The results indicated these species were important for nitrogen removal and function well under varying conditions of flow rate, species, or plant density. A prototype commercial-scale marine aquaponic system was evaluated through regular collection of water quality and plant growth data over a 9 month period. The system had a total volume of 50 m3 and contained: a swirl separator, uplfow media filter, a moving bed bioreactor, 61.4 m2 of hydroponic growing area, and a sand filter. Water quality parameters measured included: total ammonia nitrogen (TAN), nitrite (NO2-), nitrate (NO3-), total nitrogen (TN), total phosphorus (TP), chemical oxygen demand (COD), total suspended solids (TSS), and volatile suspended solids (VSS). TAN and nitrite concentrations in the fish tank effluent ranged from 0.04 to 2.42 mg/L TAN and 0.07 to 14.7 mg/L NO2--N, respectively. Nitrate concentrations increased to a maximum of 120 ± 5.7 mg/L NO3--N during the first 119 days of operation. To provide greater control over nitrate concentrations, the sand filter was converted into a downflow submerged packed bed biofilter. This reduced concentrations to a mean of 27.5 ± 13.7 mg/L NO3--N during the last 3 months. Dried plant samples were analyzed for nitrogen and phosphorus content. Nutrient uptake by plants ranged from 0.06 to 0.87 g N/m2/d and 0.01 to 0.14 g P/m2/d. It was estimated 0.55 kg/m2 of plant biomass could be harvested every 28 days. Red drum (Sciaenops ocellatus) were initially stocked at an average weight of 0.047 kg and grew to a harvestable size of 0.91 kg in approximately 12 months. A mass balance indicated that plants contributed to less than 10% of nitrogen and phosphorus removal and passive denitrification was the dominant nitrogen removal process. The second objective was to evaluate the environmental impact of aquaponics through life cycle assessment (LCA). LCAs were completed on freshwater aquaponic systems at commercial- and residential-scales. The system expansion method was used address co-production of 1 ton live-weight fish, recovered solids, plants, and water treatment. The results indicated that aquaponics contributed to significant water savings; however, aquaponics is subject to trade-offs from high energy use and the addition of industrial fish feeds. The methodology developed for freshwater aquaponics was applied to the prototype commercial-scale marine aquaponic system and was compared with two alternative scenarios of maximized plant production and a denitrification reactor with no plant production. The results indicated that a system with a denitrification reactor had the lowest environmental impact. Alternatively in the system with maximized plant production, the use of renewable energy sources would reduce the environmental impact and would contribute to greater water savings, while realizing the economic benefits of dual products. This is the first study to complete an in-depth evaluation of a commercial-scale marine aquaponic system and to evaluate aquaponics using LCA while accounting for the potential environmental offsets of multiple co-products.

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Monsees, Hendrik. "Overcoming major bottlenecks in aquaponics - A practical approach." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/18658.

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Aquaponik-Systeme stellen an sich einen sehr nachhaltigen, innovativen Ansatz für die zukünftige Lebensmittelproduktion dar. Allerdings hat sich bis heute noch kein flächendeckender, ökonomischer Erfolg eingestellt und wesentliche systemische Engpässe wurden wissenschaftlich nicht untersucht. Daher waren die Hauptziele dieser Dissertation, (I) sichere Nitratkonzentrationen in geschlossenen Kreislaufanlagen (RAS) zu ermitteln, unter denen optimales Wachstum und Tierwohl produzierter Tilapien gewährleistet ist, (II) die Evaluierung des besten Designkonzeptes für die optimale, kombinierte Produktion von Fisch und Pflanzen und (III) die allgemeine Effizienz bei der Wiederverwertung des Abwassers und der Nährstoffe aus dem Schlamm der mechanischen Filtrationseinheiten in aquaponischen Systemen zu erhöhen. Das Wachstum und die Gesundheit von Niltilapien (Oreochromis niloticus) wird durch hohe Nitratkonzentrationen (> 500 mgL-1 NO3--N) negativ beeinflusst. Nitratkonzentrationen, die für die Produktion von Pflanzen in aquaponischen Systemen (~ 200 mgL-1 NO3--N) optimal sind, haben keinen negativen Einfluss auf das Tierwohl. Entkoppelte Kreislaufsysteme sind bei einer professionellen aquaponischen Produktion von Fisch und Pflanzen zu bevorzugen. Bei der Produktion von Fisch ergab sich keinerlei Unterschied, jedoch wurde eine deutlich gesteigerte Tomatenproduktion von 36 % in entkoppelten Kreislaufsystemen erreicht. Die aerobe Mineralisation zeigte das beste Rückgewinnungpotential von Phosphat und nur geringe Nitratverluste und kann in der Gesamtheit eine deutliche Effizienzsteigerung aquaponischer Systeme zur Folge haben. Die Ergebnisse dieser Dissertation zeigen die Engpässe in der Aquaponik klar auf und liefern gleichzeitig Lösungsansätze, wie diese Hindernisse in Bezug auf das Nährstoff- und Ressourcenmanagement überwunden werden können. Dadurch kann die Nachhaltigkeit dieser Anlagen gesteigert und die Wahrscheinlichkeit des wirtschaftlichen Erfolges erhöht werden.
Aquaponics is the combination of fish production in aquaculture and hydroponic (soilless) production of crop plants. Despite of representing already a sustainable, innovative approach for future food production systems, aquaponics are still missing economic success and up to date major bottlenecks were not scientifically addressed. Therefore the main aims of this thesis were (I) to identify safe nitrate concentrations under which best growth and health status of tilapia can be guaranteed in aquaponics, (II) to evaluate the best design concept for an optimal combined production of fish and plants and (III) to increase the overall system efficiency by recycling waste water and nutrients deposited in the sludge of the mechanical filtration unit. The growth and health status of Nile tilapia (Oreochromis niloticus) is negatively affected by high nitrate concentrations (> 500 mgL-1 NO3--N) commonly reported for RAS. Nevertheless, optimal nitrate concentrations for plant production in aquaponic systems (~ 200 mgL-1 NO3--N) are not affecting fish welfare and allow for an efficient production of Nile tilapia. Decoupled aquaponics proved to be favorable for professional aquaponic production, whereas coupled systems were suboptimal for a combined production of fish and plants. There were no differences in fish production, whereas tomato production within the decoupled system was considerably increased by 36 %. Aerobic mineralization of phosphate revealed best phosphate recovery with only minor losses of nitrate. Recycling of water sludge mixture from clarifiers resulted in a substantial phosphor recovery, an increase in potassium and additional water savings. Conclusively, the results of this holistic thesis clearly revealed the bottlenecks in aquaponic technology and provided guidance in overcoming mayor obstacles in terms of optimized nutrient and resource management to increase the overall sustainability of these systems and improve production efficiency and profitability.

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Zanevra, Scott. "Monitoring and control system for an aquaponics assembly." Thesis, Zanevra, Scott (2014) Monitoring and control system for an aquaponics assembly. Other thesis, Murdoch University, 2014. https://researchrepository.murdoch.edu.au/id/eprint/25667/.

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History has shown that over the past few decades the demand for remotely controlled systems has become increasingly popular in both commercial and residential applications. Having remote access to devices gives operators flexibly, and installs confidence about what they are monitoring is functioning correctly without having to be present. With the introduction to fly-in-fly-out (FIFO) working routines and various other careers that required similar periods of working away, remote monitoring and control can help users feel that little bit closer to home. This project involves developing a remotely controlled, monitoring and control system for an indoor aquaponics system. Having a system such as this enables users to have the ability to maintain and monitor an aquaponics system for a period of time without the need for human interaction. The purpose of this thesis is to document, and present information pertaining to the design, configuration, implementation, testing and final result for the monitoring and control system designed for this project. By achieving this objective, the user has the ability to remotely control and monitor an aquaponics system via a web browser interface. Included within this design is an alarming system, automated controllers, numerous sensory interfaces and data logging functionality. Extensive research was conducted to determine firstly, the most critical elements that needs to be monitored and controlled within an aquaponics system, and Secondly, how to achieve this in the most cost effective manner. Some of the key elements that have been examined and are included within this report are: suitable software and development platforms various sensors and displays available contingency alarms, and the development of suitable graphical displays. A Raspberry Pi performs the function of a central host and master controller. The Raspberry Pi performs a vast array of tasks in relation to this project and is configured as a LAMP server. An Arduino Nano has been programmed as a slave device. The role of the Arduino Nano is to: actuate the Raspberry Pi’s requests, provide the sensory information, and to monitor some of the electrical hardware. Although this thesis is primarily focused on developing a remotely controlled monitoring and control system for an aquaponics assembly, the technology and concepts could very easily be applied to suit a wide variety of applications.

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Cunningham, Beau. "A Study of Aquaponic Systems." The University of Arizona, 2015. http://hdl.handle.net/10150/552651.

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Sustainable Built Environments Senior Capstone
This capstone project compares traditional agricultural methods to those of aquaponics. Qualitative research is used to study the effectiveness of aquaponic systems and its ability to solve the financial and environmental impacts of current agricultural methods. This study looks at the environmental, financial, and health impacts of agriculture. Three case studies are used to compare an aquaponic system, aquaculture operation, and an organic farm.

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da, Silva Cerozi Brunno, and Silva Cerozi Brunno da. "Phosphorus Dynamics, Mass Balance and Mineralization in Aquaponics Systems." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/620832.

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This study involves tracing inputs, partitioning, and outputs of phosphorus (P) through an aquaponics system. A mathematical model was developed to describe the dynamics of phosphorus in an aquaponics nutrient solution, and to maximize P use efficiency and minimize P waste. We assessed the influence of pH on the availability and speciation of phosphorus in an aquaponics nutrient solution. By using Visual MINTEQ, a freeware chemical equilibrium model for the calculation of element speciation, solubility equilibria, and sorption for natural waters, it was discovered that high pH values favor the formation of calcium phosphate complexes, decreasing the concentration of free phosphorus in aquaponics nutrient solutions. In addition, the mineralization of organic phosphorus in aquaponics systems was evaluated using treatments with phytase supplementation to fish diets, and incorporation of a microbial inoculant in the aquaponics nutrient solution. Overall, dietary phytase and microorganisms promoted phosphorus mineralization and enhanced phosphorus utilization in aquaponics systems. In the end, we conclude that aquaponics systems can keep the same growth performance and quality of vegetable crops grown in conventional systems when the availability and dynamics of phosphorus are well managed.

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Licamele, Jason David. "Biomass Production and Nutrient Dynamics in an Aquaponics System." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/193835.

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The goal of this study was to prove that aquaponic systems can produce lettuce of equal growth and quality compared to hydroponic lettuce production and to determine the stocking density of fish required for plant growth. Aquaponics is the integration of recirculating aquaculture and hydroponic plant production. The project had four objectives. The first objective was to determine the biomass of fish required for plant growth to develop a fish to plant density ratio. The second objective was to compare lettuce grown with aquaponic water and a hydroponic solution under the same environmental conditions. The third objective was to compare the quality of lettuce grown with aquaponics water plus nutrient supplementation with a hydroponic solution. The fourth objective was to determine the nitrogen dynamics in the aquaponic system and to compare the nutrient composition of lettuce grown with aquaponics water with nutrient supplementation and hydroponic solution. It was determined that under the specified environmental conditions 5 kg m⁻³ of Nile tilapia (O. niloticus) fed 2% of their body weight daily yields on average 4.7 kg m⁻² of lettuce (L. sativa cv. Rex) in 35 days. There was no significant difference (p ≤ 0.05) in biomass or chlorophyll concentration index in lettuce (L. sativa cv. Rex) grown with aquaponics water and nutrient supplements versus a hydroponic solution. The aquaponics solution generated equal biomass and chlorophyll concentration indexes compared to the hydroponic solution. Aquaponics water plus supplementation can yield L. sativa cv. Rex with equal biomass accumulation and chlorophyll concentration indexes compared to hydroponics lettuce. Nutrients added to the aquaponics system consisted of iron, manganese, and zinc. These nutrient concentrations became depleted in the aquaponics water over time and were not replenished via the fish feed. Dolomite was added to the aquaponics system every two weeks to increase the buffering capacity of the water and maintain optimal pH levels. Aquaponics lettuce had similar nutrient composition to hydroponic lettuce. One head of L. sativa cv. Rex (176.75 ± 31.03) will assimilate approximately 5.96 grams of nitrogen (3.38% per dry gram lettuce). One kilogram of fish will yield 6.4 lettuce heads (1,128 grams) and fixate 38.13 grams of nitrogen.

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Rongo, Ysabella Mar. "Sustainable Development: The Viability of Aquaponics in International Development." Thesis, The University of Arizona, 2015. http://hdl.handle.net/10150/579022.

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This thesis aims to demonstrate that the world system of agriculture is not functioning at optimum capacity to nourish the world's population properly. Due to the author's passion about Brazil, it will focus on that area, although it can be applicable to many other world regions. The core intent is to offer aquaponics as an alternative agriculture system that is viable in the developing world, and in particular Brazil. This thesis also serves as a proposal for the continuation of the research and development of the theory that aquaponics is a viable tool for sustainable community development.

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Lapere, Philippe. "A techno-economic feasibility study into aquaponics in South Africa." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5400.

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Thesis (MScEng (Industrial Engineering))--University of Stellenbosch, 2010.
ENGLISH ABSTRACT: The purpose of this study is to investigate the techno-economic feasibility of operating an aquaponics farm in South Africa. Aquaculture is the fastest-growing type of food production in the world, yet South Africa is lagging behind international efforts to boost the industry. An independent academic feasibility study on small scale aquaponics farms in South Africa has not been performed before, causing current and prospective farmers to be uncertain about the prospects of the venture. The study is approached by investigating the aquaculture and aquaponics industry and gathering the relevant information. By investigating other models used to represent aquaculture or aquaponics systems, the required information is gathered in order to build a unique model for the purpose of determining the feasibility of the case study farms. The model is modified to represent each of the case study farms. The results show that the majority of the farms are not economically viable. A sensitivity analysis provides some insight on how varying certain parameters can affect the performance of the systems. Using the information gathered in the case studies and research, a near-ideal system is specified in order to establish whether this improved system can be viable whilst taking into account the constraints placed upon aquaponics ventures in South Africa. The study suggests some recommendations for current and prospective farmers that might improve their chances of succeeding with an aquaponics venture. The study finds that currently aquaponics in South Africa is hindered by a number of constraints that result in it being a high-risk venture with meagre returns on investment. However, the study shows that if an aquaponics system were designed, built and managed correctly, it could theoretically be an economically viable venture. The investigation has, in a logical method, provided insight into the viability of operating an aquaponics farm in South Africa.
AFRIKAANSE OPSOMMING: Die doel van hierdie studie is om die lewensvatbaarheid van akwaponika in Suid-Afrika te ondersoek. Akwakultuur is die tipe voedselproduksie wat die vinnigste groei in die wêreld, maar Suid-Afrika hou nie tred met die internasionale poging om akwakultuur te ontwikkel nie. „n Onafhanklike lewensvatbaarheid studie oor kleinskaal akwaponika plase in Suid-Afrika is nog nooit onderneem nie. Dit veroorsaak dat huidige en voornemende akwaponika boere onseker is oor die uitkomste van hulle ondernemings. Die studie is benader deur die akwaponika en akwakultuur bedrywe te ondersoek, en die relevante inligting te versamel. Deur ander modelle wat gebruik word om akwakultuur en akwaponika sisteme te verteenwoordig te ondersoek, is die nodige inligting versamel om „n unieke model te bou wat gebruik word om die lewensvatbaarheid van die gevallestudies te bepaal. Die model is aangepas om elkeen van die gevallestudies te verteenwoordig. Die resultate wys dat die meerderheid van die gevallestudie plase nie ekonomies lewensvatbaar is nie. „n Sensitiwiteitsanaliese gee insig oor hoe spesifieke parameters die prestasie van die sisteme affekteer. Deur die inligting wat versamel is tydens die gevallestudies en navorsing te gebruik, kan „n sisteem gespesifiseer word om te bevestig of hierdie verbeterde sisteem lewensvatbaar kan wees terwyl dit die beperkings waaronder akwaponika sisteme in Suid Afrika geplaas word in ag neem. Die studie verskaf „n paar aanbevelings vir huidige en voornemende boere. Hierdie aanbevelings kan die kanse van sukses van die ondernemings verbeter. Die studie het gevind dat akwaponika in Suid-Afrika deur „n aantal beperkings benadeel word, wat lei tot „n situasie waar dit „n hoë-risiko onderneming is, met lae opbrengste op die belegging. Maar, die studie wys ook dat as „n sisteem korrek ontwerp, bou en bestuur word, dit teoreties „n ekonomies lewensvatbare onderneming kan wees. Die studie het op „n logiese wyse insig gegee oor die haalbaarheid van akwaponika in Suid-Afrika.

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Harder, Alexandra. "Aquaponics Everywhere? An Exploration of a Growing Industry's Revolutionary Potential." Scholarship @ Claremont, 2017. http://scholarship.claremont.edu/scripps_theses/970.

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In the summer of 2016 I worked at The Moore Street Market Farm run by Oko Farms LLC., New York City’s first and largest outdoor urban aquaponics company. Aquaponics is a method of farming that combines the cultivation of aquatic animals and plants in a mutually beneficial, symbiotic relationship. While the industry is in its infancy, aquaponics is acknowledged to have great potential to change the future of farming for sustainability, as it uses less water than traditional agriculture and can be implemented almost anywhere. This thesis examines current challenges to the industry and the potential future applications of aquaponics in urban environments, through discussion of current developments in aquaponics in Europe; Growing Power’s use of aquaponics for community benefit in the Milwaukee; as well as in the case-studies of Oko Farms and Agtech aquaponics companies in New York City. While eventually concluding that implementations of aquaponics for profit might not be viable in the long run, this thesis ends with a short discussion on hypothetical successful applications the industry could thrive in.

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Dana, Martín A. (Andreu). "Technical and economical study of Aquaponics feasibility in northern Finland." Master's thesis, University of Oulu, 2017. http://urn.fi/URN:NBN:fi:oulu-201708022724.

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The reutilization of waste products is an important matter where world view is focusing. The most common liquid waste is waste water coming from organic processes that carries an overdose of organic compounds, usually nontoxic. Traditionally this organic contaminants have been ignored and just pumped out to the environment, or in the best case neutralized into less contaminant forms. But during the past years eutrophication (overfertilization of aquatic ecosystems) has led to many environmental problems, pushing forward more active measures for removing such contaminants from water. One of the most promising ways of doing it is aquaponics, a soilless crop growing that uses waste water as fertilizer, solving two big problems: it cleans the waste water coming from fish factories and reduces the consume of fertilizer which is a product harmful to the environment in its production and use. This farming technique is really young but is gaining more popularity each year. This work is the study of the viability of implementing an aquaponics waste water treatment in a future fish farm in Oulu, on the north of Finland. Finland is a country with hard conditions for producing vegetables so most of them are imported. All the efforts made into not relying so much in external imports are welcomed and aquaponics was one of the options taken into account when deciding how the waste water cleaning process would be. The calculus process has been made step by step stating from the desired fish production and from there calculating how much vegetables would be produced and the amount of space it takes. In the economic aspect, it has been proved that the factor that caused most of the costs was the weather, as Oulu has a subpolar climate that is not mitigated enough for being a coastal city. The main result of the study has been that aquaponics does not report profits, being the artificial light the most expensive factor. Heat costs can be mitigated importing waste heat from another factories of the area like paper factories, but vegetables need artificial light in winter that has proven to be too much expensive for the benefits the vegetables reported. The study can be used as a basis for other aquaponics studies as it sets a system easy to follow for calculating the different parameters that appear in aquaponics. Also, it stays as an evidence that aquaponics can be hard of implement in extreme weather and other systems may be needed.

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Cerozi, Brunno da Silva, and Kevin Fitzsimmons. "Use of Bacillus spp. to enhance phosphorus availability and serve as a plant growth promoter in aquaponics systems." ELSEVIER SCIENCE BV, 2016. http://hdl.handle.net/10150/621498.

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Plant growth promoters (PGP) are microorganisms essential for sustainable food production systems by improving the productivity of crops and mitigating environmental impacts. Microorganisms enhance the P availability to plants by mineralizing organic P and solubilizing precipitated phosphates. This work is focused on the effect of inoculation of a commercial product containing a mixture of Bacillus spp. on hydroponically grown lettuce (Lactuca sativa) integrated with tilapia (Orechromis niloticus) aquaculture in a closed-loop system, in comparison with an untreated control. We determined plant growth and crop quality parameters to assess the efficacy of the beneficial microorganisms. A nutrient dynamics analysis was conducted to evaluate the effect of Bacillus inoculation on the changes of nutrient concentration in aquaponics solutions, as well as the phosphorus accumulation in several components (fish, plants, water and solids). We performed a plate-count assay to quantify the number microorganisms present in systems inoculated or not with the commercial Bacillus mixture. In general, nutrient dynamics was affected by the inclusion of the Bacillus mixture in the water. Systems that received the product showed faster decreases in ammonia concentration and faster increase in nitrite and nitrate concentrations than the control. The untreated aquaponics systems showed lower accumulation of phosphorus in the water than systems receiving the Bacillus mixture, which resulted in poor plant growth, low phosphorus accumulation in the leaves and low chlorophyll content. However, the mass balance analysis showed that an external source of phosphorus possibly contributed to the overall P budget in systems receiving the Bacillus mixture. The microbial plate count assay demonstrated an active microbiota in aquaponics systems receiving the treatment while untreated systems showed zero microbial counts. The Bacillus mixture used in the present study appears to have PGP properties and to affect P dynamics in aquaponics systems. However, since the product contained traces of phosphorus in its composition, further analysis will be necessary to distinguish whether the advantageous effects promoted by the Bacillus occurred as a result of a beneficial microbial activity or a fertilizing effect. (C) 2016 Elsevier B.V. All rights reserved.

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Cerozi, Brunno da Silva, and Kevin Fitzsimmons. "The effect of pH on phosphorus availability and speciation in an aquaponics nutrient solution." ELSEVIER SCI LTD, 2016. http://hdl.handle.net/10150/621534.

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The interaction between the main ions in aquaponics nutrient solutions affects chemical composition and availability of nutrients, and nutrient uptake by plant roots. This study determined the effect of pH on phosphorus (P) speciation and availability in an aquaponics nutrient solution and used Visual MINTEQ to simulate P species and P activity. In both experimental and simulated results, P availability decreased with increase in pH of aquaponics nutrient solutions. According to simulations, P binds to several cations leaving less free phosphate ions available in solution. High pH values resulted in the formation of insoluble calcium phosphate species. The study also demonstrated the importance of organic matter and alkalinity in keeping free phosphate ions in solution at high pH ranges. It is recommended though that pH in aquaponics systems is maintained at a 5.5-7.2 range for optimal availability and uptake by plants. (C) 2016 Elsevier Ltd. All rights reserved.

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Fankuchen, Peter A. "The Case for Aquaponics: an Environmentally and Economically Superior Method of Food Production." Scholarship @ Claremont, 2013. http://scholarship.claremont.edu/cmc_theses/735.

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This thesis intends to introduce the reader to the concept and benefits of aquaponic farming. The paper begins with an introductory definition of aquaponics, a brief history of aquaponic practices, and a status quo of the industry - all meant to contextualize this concept which is, to the general public, widely unknown. Comparisons are then given to competing technologies which are likely more familiar to most. Specifically, the advantages of aquaponic cultivation are weighed against traditional soil farming, hydroponics, and aquaculture. Current limitations facing the industry are discussed before the thesis concludes with an overview of arguments made.

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Chaddick, Justin Garrett. "Sustainable tilapia feed derived from urban food waste." Thesis, Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54468.

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Finding an alternative to fishmeal and fish oil in animal feeds has been a topic of increasing interest due to the pressures being put on the ocean’s fisheries and the increasing world demand for animal protein. An often-overlooked source of nutrients is in the form of food waste. One third of all food produced globally ends up in landfills, wasting a huge amount of nutrients and embodied energy that could otherwise be redirected towards productive use. This study investigated the feasibility of feeding Hermetia illucens, the black soldier fly larvae (BSFL), grown on urban food waste, and Lemna minor, a species of duckweed, to tilapia in a recirculating aquaponic system as a compound feed. The study compared the growth of two groups of 58 tilapia over 44 days; one group was fed commercial pellets and the other a compound feed composed of BSFL and duckweed. The group fed the commercial pellets achieved heavier weight gain than the group fed the experimental feed but both groups resulted in steady weight gain and had similar mortality rates. Feeding the experimental feed composed of BSFL and duckweed to tilapia in an aquaponics system is an effective method of diverting food waste from the landfill and further research should be done to optimize this process.

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Foskett, Dustin. "Food Security and Small Scale Aquaponics: A Case Study on the Northern Mariana Island of Rota." Thesis, University of Oregon, 2015. http://hdl.handle.net/1794/18751.

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Aquaponics has recently emerged on the global scene as a viable form of alternative agriculture. A combination of practices, such as growing and harvesting fish (aquaculture) along with "hydroponically" grown fruits and vegetables, aquaponics integrates traditional agriculture practices with twenty-first century scientific food producing methods. In this thesis, I analyze the literature on aquaponics and connect it firmly within the current social and environmental discussions of the food security discourse among Pacific Island Countries and Territories in order to provide a context of geographical relevance of fish and vegetable producing systems. I also provide data from the Northern Mariana Island of Rota to showcase why and how aquaponics may be a viable option for improving food security within such a context. I then argue that the aquaponic project on the island of Rota helps serve as one potential pathway to improving food security.
2015-07-14

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Kralik, Brittany A. "Quality and Nutritional Analysis of Aquaponic Tomatoes and Perch." Bowling Green State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1617139965099778.

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Monsees, Hendrik [Verfasser], Werner [Gutachter] Kloas, Uwe [Gutachter] Schmidt, and Klaus [Gutachter] Knopf. "Overcoming major bottlenecks in aquaponics - A practical approach / Hendrik Monsees ; Gutachter: Werner Kloas, Uwe Schmidt, Klaus Knopf." Berlin : Humboldt-Universität zu Berlin, 2018. http://d-nb.info/1185668489/34.

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Foster, Sean M. "Effect of Aquaponic vs. Hydroponic Nutrient Solution, Led Light Intensity and Photoperiod on Indoor Plant Growth of Butterhead, Romaine and Kale (L. sativa, B. oleracea)." DigitalCommons@CalPoly, 2018. https://digitalcommons.calpoly.edu/theses/1948.

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Vertical farming has been proposed as a solution for providing food security for an increasing, urbanized human population. Light-emitting diode (LED) technology has become increasingly affordable and efficient, making it an ideal choice as artificial lighting for indoor farms. Still largely undiscovered parameters are the optimal plant varieties and types of production systems for plant growth, profit, and human nutrition. Aquaponics may be able to provide sustainable animal protein for vertical farms, increasing their ability to provide more substantial nutrition to consumers. This research aimed to better understand vertical farming as a food production system, and to determine if aquaponics can be an appropriate and applicable fit for it. The experiment was a randomized, factorial design with three independent variables: (1) LED photoperiod interval (2) LED-plant distance, and (3) nutrient solution, as well as several dependent variables to assess both plant yield and quality. A 4-tiered shelving unit was constructed for nutrient film technique (NFT) plant production, and treatments were assigned to each row: (1) LED experiment: Row A, 12/12hr reduced photoperiod with adjustable LEDs 4in. above plant surface; Row B, 2/1hr altered photoperiod interval relative to the control; Row C (control), 16/8hr “standard” photoperiod. (2) Nutrient experiment: Row C, aquaponic nutrient solution; Row H, hydroponic nutrient solution. Rows C and H had matched photoperiod and light intensity. Kale from Row A had significantly lower fresh and dry plant yield relative to the control, Row C (p<0.05). Hydroponic romaine, Row H, had significantly higher plant yield relative to aquaponics, Row C (p<0.05). Butterhead yields were not significantly different in any treatments (p>0.05). Future research may implement a larger sample size of only one plant variety, harvest plants earlier, limit light intensity variation, effectively “balance” the aquaponics system, and have more measures of plant “quality.”

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Nihiser, Brice A. "Evaluation Of The Applications Of A Biomimetic Antifouling Surface (Sharklet™) Relative To Five Other Surfaces To Prevent Biofilm Growth In Freshwater Aquaponics Systems." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1396883916.

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Shyu, Hsiang-Yang. "Application of a Floating Membrane Algal Photobioreactor for Freshwater Aquaculture." Scholar Commons, 2018. https://scholarcommons.usf.edu/etd/7573.

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As the global population grows, water and food demand also increase. The intensive aquaculture industry has helped to mitigate these problems. In order to make aquaculture sustainable, it is necessary to remove the abundant nutrients produced by fish in the water. In this study, the role of the microalga of Chlorella vulgaris in the Isolated Cultivation of Algal Resources Utilizing Selectivity (ICARUS) membrane photobioreactor was evaluated for nutrient control in the aquaculture system. The production of algal biomass, the removal rate of nutrients, and the impact of microalgae on cultured organisms were monitored during the operation of aquaculture systems. At the end of the experiment, the yield of algae in ICARUS was approximately 344 ± 11.3 mg / L. Compared to the control groups, this production of algae is considered to be low. Likely factors were insufficient indoor light intensity, membrane fouling limiting the mass transfer of nutrients, and improvements still needed for the overall ICARUS prototype design. However, ICARUS can efficiently prevent algae from contamination, and provide pure harvest production for food supplement. It was observed that algae have the ability to help stabilize pH and increase dissolved oxygen for the system. However, in high-density, mixed systems, algae may cause physical damage to fish (e.g., clogging of gills). The high ammonia concentrations produced by fish could be controlled by Chlorella vulgaris since this species of algae prefers ammonia to nitrate. In conjunction with algal growth, aquaculture systems concentration of ammonia was maintained at 0.90±0.16 mg/L. The integration of ICARUS is not only a potentially sustainable option for aquaculture, but also a multipurpose tool for other types of wastewater treatment. An economic analysis for scale-up of the ICARUS system was performed. In summary, this study aimed to develop a new commercial ICARUS photobioreactor which can serve for different types of wastewater systems with a high algal production efficiency and economic benefits.

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Wicoff, Emily. "Development of a simplified commercial-scale aquaponic facility for implementation in northern Uganda." Thesis, Kansas State University, 2011. http://hdl.handle.net/2097/8848.

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Master of Science
Department of Civil Engineering
Steven K. Starrett
Current aquaponic technology ranges from backyard hobbyist to technologically advanced commercial production. A single source for protein (fish) and nutrients/vitamins (vegetables), development of a technologically simplified commercial-scale system is a realistic solution for many impoverished nations. This study develops a simplified aquaponic facility to be implemented in rural northern Uganda. Research objectives were to: (1) identify simplified commercial-scale system design components, (2) establish a water quality baseline, (3) identify plant/tilapia production ratios, (4) identify construction materials available in northern Uganda, (5) integrate culturally familiar elements, (6) complete preliminary facility design, and (7) calculate facility water balance. The study established that a viable simplified design achieves: (1) water circulation with weir gravity flow and one return pump, (2) tank cleaning with strategically sloped floors and manual waste siphoning, and (3) breeding control with raised bottom fishnets. Submerged aeration is critical to optimal fish growth, and cannot be eliminated despite surface aeration’s low energy appeal. Baseline water quality parameter values of DO > 3 mg/L, pH > 5.5, and TAN > 3 mg/L (2 mg/L average) were established for the pilot study configuration and hydraulic retention time (HRT). A plant/tilapia ratio of 2.5 ft[superscript]2/lb was identified for the proposed facility’s design. The simplified design was assessed compatible with concrete block construction local to northern Uganda. Incorporating the following culturally familiar elements will facilitate technology adoption: utilize native fish (tilapia) and vegetable crops identified in community markets, replace commercially produced plant tank raft components with woven matting from locally available natural materials, and identify the unfamiliar proposed tank design with newly adopted raceway culture techniques at a well-known Ugandan national fishery institute. A proposed facility preliminary design represents local materials, identified plant/tilapia ratio, minimum HRT, and simplified design components for tilapia densities ranging from 12 to 3 gal/lb. With the facility supplied by both rainwater and groundwater, corresponding water balances for 12 to 3 gal/lb densities ranged from a 9,735 gal/yr well supply demand to a 10,984 gal/yr rainwater surplus.

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Hallström, Gustav. "Som fisken i vattnet på torra land." Thesis, KTH, Arkitektur, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168579.

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Vad gör en fiskmarknad i Stockholm? Projektet, som utgår från idén om en fiskmarknad på Skeppsbron i Gamla stan, har fokuserats på en alternativ lösning där fisk och grönsaker odlas i ett slutet system – akvaponi. Anledning till den alternativa ingången är Östersjöns dåliga hälsotillstånd, som är en följd av en lång tids ogenerade föroreningar. Östersjöfisken är i dag förbjuden att sälja som matfisk inom EU, men svenska politiker har aktivt sökt, och fått, dispens för en inhemsk försäljning av den förgiftade fisken. Kvinnor och barn avråds i dag från att äta östersjöfisk mer än tre gånger per år. Är det då hållbart att viga en så central plats som Skeppsbron åt en romantiserad fiskhall som bär färre än hundra ”lokala” fiskare under armarna, och som riktar sig till ett smalt, i huvudsak manligt kundsegment? En strategi formas för att kunna tillgodose en fiskmarknad med enbart fisk odlad på plats, samtidigt som den inre organisation och stadsrummet tas i beaktan.
What is a fish market doing in Stockholm? The project, based on the idea of a fish market on Skeppsbron in the old town of Stockholm (Gamla stan), has its focus on an alternative solution where fish and vegetables are grown in a closed system – aquaponics. The reason for the alternative solution is the bad health situation for the Baltic sea, which is the outcome of a long period of unashamed polluting. The fish from the Baltic sea is illegal to sell as food within the EU, but Swedish politicians have actively sought, and received, exemption for a regional trade with the poisoned fish. Women and children are advised to refrain from eating fish from the Baltic sea more than three times per year. Is it then sustainable to use such a central place as Skeppsbron for a romanticized fish market that pays for less than a hundred “local” fishermen, and that addresses a narrow, mainly male segment? A strategy is formed to provide for a fish market with only fish bred on location, at the same time taking in consideration the inner organization and the cityscape.

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Mattsson, Nicodemus. "Sun Tunnel." Thesis, KTH, Arkitektur, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-241474.

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This thesis project aims to repurpose an abandoned railway tunnel in Eriksdalslunden, Stockholm into an experimental activity/farming center for the purpose of teaching people of all ages different farming methods. The learning center implements exciting farming techniques such as aquaponics, where plants get their nutrients from live fish. This center also teaches about the new technologies that make it possible to grow plants beneath the earth´s surface. These technologies harness the benefits of the sun into a concentrated form and then leads it deep underground. Repurposing unused underground spaces such as this can help develop our cities in a more efficient way.
Detta avhandlingsprojekt syftar till att omarbeta enövergiven järnvägstunnel i Eriksdalslunden,Stockholm till en experimentell verksamhet / jordbrukscentrum för att undervisa människor i alla åldrar olika odlingsmetoder. Inlärningscentralen implementerar spännande odlingstekniker som aquaponics, där växter får sinanäringsämnen från levande fisk.Detta centrum lär också om den nya tekniken som gör det möjligt att växa växter under jordens yta. Dessa tekniker utnyttjar solens fördelar i en koncentrerad form och leder sedan den djupt under jorden. Repurposing oanvända underjordiska utrymmen som detta kan hjälpa till att utveckla våra städer på ett mer effektivt sätt.

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Boxman, Suzanne. "Evaluation of a pilot land-based marine integrated aquaculture system." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4444.

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Recirculating aquaculture systems (RAS) produce aquaculture products on land with minimal discharge of waste products and minimal water loss. High costs associated with waste treatment for RAS have triggered the growth of integrated aquaculture systems (IAS) which incorporate macrophytes (aquatic plants) into the treatment train. The objective of this research was to examine a pilot scale inland marine IAS with three different methods for solids treatment: a sand filter followed by a plant bed, only a plant bed, and geotextile bags. Florida Pompano (Trachinotus carolinus) were grown along with Smooth Cordgrass (Spartina alterniflora), Black Needle Rush (Juncus romerianus), and Red Mangrove (Rhizophora mangle). Between May 2011 and April 2012, water quality was tested at seven points located throughout the IAS for total suspended solids (TSS), chemical oxygen demand (COD), total nitrogen (TN), ammonium (NH4+), nitrate (NO3-), total phosphorus (TP), and orthophosphate (PO43-) concentrations every 4 to 6 weeks. Plant and soil samples were collected three times and analyzed for total nitrogen and total phosphorus. A statistically significant difference in the effluent concentrations for the three treatments was not found; however, due to the recombination of effluent from the solid treatments and the variability inherent in a pilot scale system it was difficult to isolate the individual efficiencies of each treatment. Therefore, on average the complete system achieved COD and TSS removal efficiency of 59% and 88%, respectively and TN and TP removal efficiency of 48% and 19%, respectively. Nutrient uptake by plants did not vary significantly between the plant beds. In general, the system provided sufficient nutrient removal for safe fish production, and the fish provided enough nutrients for ample plant growth.

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Van, Deventer Thomas. "Ecosystemic supply chain : a research and development centre for urban agriculture." Diss., University of Pretoria, 2011. http://hdl.handle.net/2263/29984.

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With our ever increasing global population it will be necessary for dense urban environments to develop methods of farming locally. Not only will urban agriculture be beneficial in aiding in the solution of this growing populations need for food production, but it can help to reconnect us to our food and their processes. This dissertation explores the education and reconnection of the public with the food production cycle through the experience of building integrated agriculture, vermiculture and aquaponic systems (cultivating plants and fish symbiotically). Pretoria’s Apies River is an ideal location for the establishment of a research facility of urban ecosystemic food production. The proposed urban agriculture program will allow for hands on research and development of emerging methods and technologies related to farming in the city environment while providing a platform for public education through interaction&inspiration.
Dissertation (MArch(Prof))--University of Pretoria, 2011.
Architecture
unrestricted

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Smith, Skyler W. "Selenium Determination using Oxygen Mass-Shift Interference Removal Technology with LC-ICP-MS/MS." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535701577136671.

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Leal, Margarida Meneses. "Effect of alternative fish feed and electricity independent oxygenation in decoupled aquaponic systems." Master's thesis, Universidade de Lisboa, Faculdade de Medicina Veterinária, 2022. http://hdl.handle.net/10400.5/23561.

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Dissertação de Mestrado Integrado em Medicina Veterinária
Aquaponic systems combine Recirculating Aquaculture Systems (RAS) and hydroponic systems, combining the production of animal protein and plants. RAS wastewater enriched in nutrients is used by plants in hydroponic units. RAS rely on fishmeal and fish oil, which are finite resources as aquafeed ingredients, but alternative and more sustainable ingredients have been developed; black soldier fly (Hermetia Illucens) meal is one of the most promising alternatives. Therefore, the aim of experiment 1 was to investigate if using a fishmeal based diet (FIM) or, alternatively, a black solider fly meal based diet (BSF) has different effects on lettuce growth in decoupled aquaponic systems. Three different treatments were applied: one hydroponic treatment (control treatment); and two aquaponic treatments. The nutrient solution was made with fish wastewater from a RAS fed either with fishmeal based diet (FIM treatment) or black soldier fly meal based diet (BSF treatment). Abiotic parameters of the nutrient solutions were monitored (temperature, electrical conductivity, dissolved oxygen), air temperature, relative humidity, as well as micro- and macronutrients in the nutrient solutions; and fresh weight (FW), dry weight (DW), number of leaves, water consumption and SPAD values of the lettuce. Similar lettuce yields were observed between the treatments. However, in FIM treatment, higher sodium concentrations were seen in the nutrient solution. This is the first study showing the benefits of using alternative fish diets in decoupled aquaponic systems, to avoid potentially harmful sodium levels in aquaponic nutrient solutions. Aquaponics and hydroponics can be unsustainable in areas where electricity is unavailable, expensive or unstable; thus, the experiment 2 was carried out to test an alternative method of oxygenating nutrient solutions without electricity using H2O2, and its potential effects on lettuce growth in hydroponic and aquaponic systems. Three treatments were applied: hydroponic control treatment with compressed air (H air); and two other treatments with nutrient solutions provided with a passive H2O2-supply instead of compressed air: a hydroponic treatment (H H2O2) and an aquaponic treatment (RAS H2O2). The same parameters as in experiment 1 were examined and no significant differences in terms of growth or yield were observed. Hence, it shows that this method of oxygenation is a valid alternative for setups in areas where the electrical grid is a limitation.
RESUMO - Sistemas aquapónicos combinam os sistemas de recirculação em aquacultura (RAS) e sistemas hidropónicos, combinando a produção de proteína animal e plantas. A água residual do RAS rica em nutrientes é usada por plantas nas unidades hidropónicas. RAS depende da farinha e óleo de peixe, que são recursos finitos, como ingredientes para a ração dos peixes mas, ingredientes alternativos foram desenvolvidos; a farinha de mosca soldado negra (Hermetia Illucens) é das mais promissoras. Assim, o objetivo da experiência 1 foi investigar se o uso da ração baseada em farinha de peixe (FIM) ou alternativamente, a ração baseada em farinha de mosca soldado negra (BSF), produz diferentes efeitos no crescimento da alface em sistemas aquapónicos desacoplados. Usou-se três tratamentos, um tratamento hidropónico (controlo) e dois tratamentos aquapónicos, com solução nutritiva preparada com água residual de um RAS alimentado com ração baseada em farinha de peixe, tratamento FIM, ou baseada em farinha de mosca soldado negra, tratamento BSF. Parâmetros abióticos das soluções nutritivas foram monitorizados (temperatura, condutividade elétrica, oxigénio dissolvido), temperatura do ar, humidade relativa, tal como os micro- e macronutrientes; e massa fresca, massa seca, número de folhas, consumo de água e valores SPAD das alfaces. Observou-se semelhantes produções de alface entre os tratamentos. Porém, no tratamento FIM, maiores concentrações de sódio foram encontradas na solução nutritiva. Este é o primeiro estudo que mostra os benefícios do uso de rações alternativas em sistemas aquapónicos desacoplados. A aquaponia e hidroponia podem ser insustentáveis em áeras onde a eletricidade está indisponível, cara ou instável; assim, a experiência 2 foi realizada para testar um método alternativo de oxigenação das soluções nutritivas sem uso de electricidade usando H2O2. Usou-se três tratamentos: tratamento hidropónico controlo com ar comprimido (H air); e dois tratamentos com soluções nutritivas com fornecimento passivo de H2O2 em vez de ar comprimido: um tratamento hidropónico (H H2O2) e um tratamento aquapónico (RAS H2O2). Os mesmos parâmetros da experiência 1 foram obtidos e não se observou diferenças significativas em termos de crescimento ou rendimento. Assim, demonstra que este método de oxigenação é uma alternativa válida em áreas onde a rede elétrica é instável.
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Björn, Erik. "A circular production of fish and vegetables in Guatemala : An in-depth analysis of the nitrogen cycle in the Maya Chay aquaponic systems." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-227646.

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This study was done with the aim of deepening the understanding of the Maya Chay aquaponic systems. To meet the aim, a literature study on aquaponics, with an emphasis on the nitrogen metabolism in such systems, was conducted. Furthermore, a deep investigation of the specific Maya Chay systems was made to understand how these systems might be different from the general aquaponic designs. Finally, two nitrogen balances were developed with the purpose of examining the dynamics of the nitrogen transformations in two Maya Chay aquaponic systems. The measurements for the nitrogen balances was made between Mars 2017 to July 2017, and the model for the nitrogen balances evaluated the amount of nitrogen as: i) nitrogen input to the system through the feed, ii) nitrogen assimilated by the fish and the plants, iii) nitrogen accumulated in the sludge, and iv) nitrogen lost to the atmosphere through denitrification and similar processes such as anammox. The resulting nitrogen balances showed some interesting differences in the dynamics of nitrogen distribution. In the smaller Maya Chay XS system in Antigua, only 36 % of the nitrogen input was assimilated by the fish (30 %) and the plants (6 %) and 64 % of the nitrogen input could be regarded as lost, either to the atmosphere (46 %) or in the sludge (18 %). The other nitrogen balance showed that the distribution of nitrogen in the Maya Chay S system in Chinautla is much more efficient in taking care of the nitrogen input. In this system 70 % was assimilated by the fish (33 %) and the vegetables (37 %) and the remaining 30 % was lost, either to the atmosphere (14 %) or in the sludge (16 %). The nitrogen balances also showed that both systems are almost equally efficient in terms of nitrogen assimilation by the fish, and that the big differences lie in the rate of nitrogen assimilation by the plants (6 % vs. 30 %) and in the nitrogen loss to the atmosphere (46 % vs. 14 %). A likely explanation for these differences is the difference in design of the vegetable beds, where the less efficient system in Antigua has a large surface area for the vegetable bed, but only a small portion of this could be utilized for vegetable growth. Furthermore, a consequence of the larger surface is a larger anoxic zone in the bottom of the vegetable bed, which promotes the growth of denitrifying and anammox bacteria. These kinds of bacteria convert the dissolved ammonia, nitrite and nitrate to gas forms of nitrogen, such as nitrogen gas and nitrous oxide and thus nitrogen is lost from the system to the atmosphere. Finally, this study also showed a great difference in the ratio of vegetable to fish production between the systems, where the ratio was 0.43 in Antigua and 2.7 in Chinautla. This ratio further indicates the difference in design between the systems, especially regarding the vegetable beds, has an impact on how well they perform, both in terms in economic and productivity terms, but also in terms of the release of greenhouse gases (nitrous oxide). It can therefore be concluded that the original design of the Maya Chay system (i.e. the Chinautla system) is the preferable one. Even though the accuracy of the measurements in the experiments could be improved for future studies, this study has demonstrated the value of making nitrogen balances for aquaponic systems. Nitrogen balances increase the knowledge of the performance of the system and they increase the understanding of the dynamics of nitrogen transformations that takes place in the system. This knowledge can then be utilized to adjust the design and/or verify if either the aquaculture or hydroponic system is properly designed.
Den här studien gjordes med syftet att fördjupa förståelsen kring Maya Chay akvaponiska system. För att uppnå syftet, utfördes en litteraturstudie som fokuserade på metabolismen av kväve i sådana system. Vidare undersöktes specifika Maya Chay system för att förstå hur dessa system skulle kunna skilja sig från den generella akvaponiska designen. Slutligen utvecklades två kvävebalanser i syfte att utforska dynamiken i de kväveomvandlingar som sker i två Maya Chay akvaponiska system. Mätningarna för kvävebalanserna gjordes i perioden mars 2017 till juli 2017, och modellen för kvävebalanserna utvärderade mängden kväve som: i) kväve som tillförts till systemet genom fodret, ii) kväve som assimilerats av fiskarna och växterna, iii) kväve som ackumulerats i slammet, och iv) kväve som gått förlorat till atmosfären genom denitrifikation och liknande processer så som anammox. Resultaten från kvävebalanserna visade intressanta skillnader kring dynamiken av kvävefördelningen. I det mindre Maya Chay XS systemet i Antigua, assimilerades endast 36 % av kvävet av fiskarna (30 %) och växterna (6 %) och 64 % av kvävet ansågs som förluster, antingen till atmosfären (46 %) eller genom slammet (18 %). Den andra kvävebalansen visade att fördelningen av kväve i Maya Chay S systemet i Chinautla är mycket mer effektivt gällande tillvaratagandet av tillfört kväve. I detta system assimilerades 70 % av fiskarna (33 %) och av växterna (37 %) och de resterande 30 % gick förlorat, antingen till atmosfären (14 %) eller i slammet (16 %). Kvävebalanserna visade även att bägge systemen är mer eller mindre likvärdiga gällande assimilering av kväve från fiskarna, och att den stora skillnaden mellan systemen ligger i hur mycket kväve som assimilerats av växterna (6 % vs. 37 %) samt hur mycket kväve som gått förlorat till atmosfären (46 % vs. 14 %). En sannolik förklaring till dessa skillnader är skillnaden i designen av växtbäddarna för två systemen, där det mindre effektiva systemet i Antigua har större area för växtbädden, men endast en mindre del av denna kunde nyttjas för odling av grönsaker. Som konsekvens av den större arean av växtbädden är en större volym syrefattigt vatten i botten av växtbädden, vilket verkar för tillväxt av denitrifierande och anammoxa bakterier. Dessa typer av bakterier omvandlar den upplösta ammoniaken, nitriten samt nitratet till kväveföreningar i gasform, till exempel kvävgas och lustgas och därav går kvävet förlorat till atmosfären. Slutligen visade den här studien stora skillnader i förhållandet mellan växt- och fisk-produktion mellan de två systemen, där förhållandet var 0.43 i Antigua och 2.7 i Chinautla. Skillnaden mellan de två olika förhållandena är ytterligare en indikation till att skillnaden i designen mellan systemen, speciellt med avseende på växtbäddarna, har en effekt på hur väl systemen presterar, både i termer som ekonomi och produktivitet, men också i termer som utsläpp av växthusgaser (lustgas). Därför kan slutsatsen dras att den ursprungliga designen av Maya Chay systemen (det vill säga systemet i Chinautla) är att föredra. Även om noggrannheten i mätningarna i detta experiment skulle kunna förbättras i framtida experiment, så visar denna studie värdet av att utföra kvävebalanser för akvaponiska system. Kvävebalanserna ökar kunskapen om hur väl systemen fungerar och dom ökar kunskapen kring dynamiken i kväveomvandlingarna som sker i systemen. Denna kunskap kan sedan utnyttjas för att justera designen av systemen och/eller verifiera om antingen vattenbruksdelen eller hydroponidelen i systemet är feldimensionerad.

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Amin, Majdi Talal. "Dynamic Modeling and Verification of an Energy-Efficient Greenhouse With an Aquaponic System Using TRNSYS." University of Dayton / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1450432214.

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Medina, Miles D. "Effect of Aquafeed on Productivity of Red Amaranth and on Water Quality under Aquaponic Cultivation." FIU Digital Commons, 2014. http://digitalcommons.fiu.edu/etd/1206.

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Aquaponics, the integrated production of fish and hydroponic crops in a recirculating system, is an intensive cultivation method in which metabolic fish wastes fertilize plants. This study compares the effects of two aquafeeds on Red amaranth (Amaranthus tricolor) productivity and on water quality under cultivation of Blue tilapia (Oreochromis aureus), with three aquaponic units (n=3) per treatment over a 60-day trial. The fishmeal-based control feed contains higher crude protein (40%) and phosphorus (1.12%) than the plant-based alternative feed (32% and 0.40%). The alternative feed resulted in a significantly higher amaranth crop yield (p

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Ondruška, Vojtěch. "Optimální využití energie a vody v aquaponické farmě." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-416637.

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Energetická náročnost a ekonomická životaschopnost jsou často skloňované pojmy spojené s aquaponickým způsobem produkce potravin. Tato práce si klade za cíl nalézt opatření, která by zvýšila ziskovost podnikání v oblasti aquaponie a zároveň by snížila energetickou náročnost procesu a spotřebu dalších zdrojů. Součástí práce je následné ověření vybraných opatření na zkušební aquaponické farmě. K vyřešení otázky úspory energie a vody byly použity optimalizační metody vycházející z procesního inženýrství. Pro účely automatického monitoringu růstu rostlin, jakožto hlavního zdroje příjmů v aquaponii, byla využita technologie počítačového vidění. Za využití optimalizační metody zvané P-graph, integrace procesů a hledání procesních alternativ bylo nalezeno nejlepší možné uspořádání procesní sítě, které vykazovalo více než devítinásobný čistý roční příjem ve srovnání se současným uspořádáním procesních zařízení v aquaponické farmě. Dalších úspor energie a vody bylo dosaženo instalací reflexních fólií na okraje pěstebních boxů a dalším využitím odpadní vody z aquaponické části farmy v hydroponické sekci určené k pěstování sazenic. Tato opatření mohou napomoci aquaponickým farmám zvýšit konkurenceschopnost a snížit jejich dopad na životní prostředí.

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Sund, Emil. "Självförsörjande hushåll med biogasproduktion och akvaponi." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-229917.

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Energiförsörjningsteknologier behöver avanceras, oberoende av var i världen och i vilket syfte. Fossila bränslen bidrar till kraftiga växthusgasutsläpp när de förbränns och kretsloppet för dessa råvaror är en långsam process. Biogas är en av möjligheterna till utveckling då denna teknik i många fall kan använda råvaror mer tillgängliga för utvinning än de fossila, vilket möjliggör lokala energilösningar som kan bidra till att minska transporter, men framförallt mindre klimatpåverkande utsläpp. Detta då biogasens energikapacitet ligger i just mängden metan som gasen innehåller, vilket medför att teknologins utveckling strävar mot att ta tillvara på så mycket av denna växthusgas som möjligt, samtidigt som den stora biprodukten, koldioxid, är grön och ej bidrar till ökad växthuseffekt.Syftet med denna rapport är att bidra till utvecklingen av småskalig biogasproduktion, som idag ej är tillräckligt utvecklad för att kunna erbjuda självklara alternativ i situationer som har en god potential. Dessa situationer uppstår i exempelvis gårdsmiljöer där mycket avfall genereras i form av gödsel och jordbruksrester som är en utmärkt råvara för biogasproduktion. Men biogasanläggningar är idag optimerade för storskaliga verksamheter, som avloppsverk där stora volymer kommunalt avfall från hela städer hanteras. Mindre biogasanläggningar får problem med lönsamheten då volymerna idag är kraftigt kopplade till biogasavkastningen, men problem uppstår även vid drift och service av själva anläggningen då dessa är långt ifrån standardiserade och oftast platsbyggts för ändamålet.Biogas på ännu mindre skala, exempelvis i situationer med vanligt hushållsavfall har även det en potential då det i hushållen idag förbrukas väldigt mycket livsmedel, vatten och energi som med ett mer slutet kretslopp kan ta tillvara på mer resurser och på så sätt kan minska sitt ekologiska fotavtryck. Detta ledde till frågeställningen om hur det med en odling-och gårdsverksamhet kan, med hjälp av biogas, produceras en tillräcklig mängd mat och energi för att försörja ett hushåll.Arbetet inleddes med en litteraturstudie för att sammanställa data över viktiga parametrar och relevant bakgrundsinformation då mycket antaganden och schablonvärden behövde användas. Varje komponent i systemet fick input- och outputvärden gällande yta, energi, vatten m.fl. för att tillslut kunna uppskatta en landareal tillräcklig för matförsörjning, med eller utan energibalans.Resultaten från denna rapport visade att redan vid 593 m2 kunde ett hushålls matproduktion och förbrukning försörjas i ett år. Vidare utfördes en känslighetsanalys på viktiga variabler för att uppskatta hur ett framtida arbete med frågan bör utformas.
Around the world, energy supplying technologies need to advance regardless of its purpose of use. Burning of fossil fuels are the number one source of increase in greenhouse effect and its lifecycle is too long to be an option for the future. One of the more sustainable options is the production and use of biogas which utilizes more convenient resources like sewage waste, manure and domestic waste. This enables more local energy solutions and reduces the need for transport, but also contributes far less to the elevation and concentration of greenhouse gases in the atmosphere. The main component is methane which is also a potent greenhouse gas, but methane is also the one thing that is combustible in the gas and therefore the technology advances in utilizing more and more of this and reducing the loss fractions.Therefore, the purpose of this report is to contribute in the development of small-scale biogas production since most of the operating conditions today are optimized for large scale plants like sewage treatment plants, which handles much larger volumes of waste from whole towns and regions. The smaller scale operations are often in farm environments that have a lot of raw materials and wastes from their daily operations like manure and crop residues. Today these sizes struggle with profitability since biogas yield is strongly linked to production volume, and often maintenance becomes a problem because of on-site builds.The potential of biogas production is even located in smaller operations like household and domestic environments, mainly because of the high fraction of waste that originates in these sectors of society. Food waste and sewage are two important fractions that are being utilized today but mainly in scientific efforts or large-scale operations. This led to the question of how these two smaller-scale situations could work together, and how production of biogas could aid in becoming self-sufficient in food and energy consumption.The report started off with an overview of the literature on the subjects to help create a foundation for the many assumptions and template calculations that were required to model this situation. Each component in the system where given input- and output variables regarding energy, water and spacing required. This was then used to model a total area where it could take place.The results showed that already at 593 m2 you could grow enough food for a household to be self-sufficient for a year. This was without concern of energy usage which led to exceeding costs at about 540 000 SEK yearly, with a self-sufficiency rate of about 31 %. Furthermore, a sensitivity analysis was conducted on a few selected variables that was considered more uncertain which showed a variance in both total area and heating costs.

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Frank, Jakob, and Tom Hjälmefjord. "Gains N Greens." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-42870.

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At present, it is focused either on aquaculture or agriculture. Those who focus on aquaculture or Recirculating Aquaponics System (RAS) receive a by-product of ammonia, which is then cleaned and the water either goes back to the fish or it is not cleaned at all and as they do in the salmon farms for example they let it sink to the bottom which creates eutrophication and major problems among the marine. Those who focus on agriculture use colossal amounts of land and outdoor areas for cultivation. Most of them use chicken manure and huge amounts of pesticides for the plants to be optimal. Another alternative is that you can use aquaponics, which is a kind of ecosystem where fish and plants live and thrive on each other's residual products. The fish produce ammonia in the fish tank which eventually makes the water uninhabitable and instead of having a cleaning pump in the fish tank, the water is sent to the cultivation bed where the plants pick up the nutrients and clean the water in turn so that the water can be pumped back to the fish tank. This system makes it possible to produce both fish and plants in an optimized and safe system. Aquaponics is advantageous in that it utilizes the by-product of the fish and gives it to the plants. Where ammonia is the fish’s residual product that turns into nitrite and then to nitrate and it is precisely nitrate that the plants use as nutrition, in turn, they purify the water that goes back into the fish tanks, which gives a closed cycle. At present, aquaponics has not been able to impact on a large scale more than in a few places, partly because there is ignorance of how it works and partly because it requires technical knowledge of how to build a functioning system together. The project goal that we strive for is to get a PlugNPlay solution that enables people who want to invest in aquaponics, but do not have the technical knowledge to compile a functioning optimal system. The project group will also compare different farming methods and make measurements on which medium is the best to grow in, but also what kind of food that works to grow in an efficient way.
I dagsläget fokuseras det antingen på vattenbruk eller på jordbruk. De som fokuserar på vattenbruk eller Recirkulerande Akvaponiska System (RAS) får en biprodukt bestående av ammoniak, som sedan rengörs och vattnet går antingen tillbaka till fiskarna eller så rengörs det inte alls och som de gör i till exempel laxodlingarna, de låter det sjunka till bottnen vilket skapar övergödning och stora problem bland det marina. De som fokuserar på jordbruk använder kolossala mängder av jord och ytor utomhus för att kunna odla. De flesta använder sig av hönsgödsel och enorma mängder bekämpningsmedel för att plantorna ska bli optimala. Ett annat alternativ är att man kan använda sig av akvaponik som är ett sorts ekosystem där fiskar och växter lever och frodas på varandras restprodukter. Fiskarna producerar ammoniak i fisktanken som gör så att vattnet till slut blir obeboeligt och istället för att ha en rengöringspump i fisktanken så skickas vattnet över till odlingsbädden där växterna plockar upp näringen och rengör vattnet i sin tur så att vattnet sedan kan pumpas tillbaka till fisktanken. Detta system gör det möjligt att producera både fisk och växter i ett optimerat och säkert system. Akvaponik är fördelaktigt i den mån att den utnyttjar biprodukten ifrån fiskarna och ger denna till växterna. Där ammoniak är fiskens restprodukt som blir till nitrit och sedan till nitrat och det är just nitrat som växterna använder som näring, i sin tur så renar de vattnet som går tillbaka in till fisktankarna vilket ger ett slutet kretslopp. Akvaponiken har i dagsläget inte slagit igenom storskaligt mer än på ett fåtal platser, dels för att det finns okunskap om hur det fungerar dels för att det krävs teknisk kunskap om hur man bygger ihop ett fungerande system. Projektmålet som vi strävar efter är att få till en PlugNPlay lösning som gör det möjligt för människor som vill satsa på akvaponik men inte har den tekniska kunskapen att sammanställa ett fungerande optimalt system. Projektgruppen kommer även att jämföra olika odlingssätt och göra mätningar på vilket medium som är bäst att odla i men även vilken sorts mat som fungerar att odla på ett effektivt sätt.

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Szotkowski, Matěj. "Bilance energie, vody a živin v aquaponickém cyklu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-442809.

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Předložená diplomová práce byla zpracována s cílem vytvořit přehled poznatků v oblasti akvaponické potravinové produkce. Informace získané během tvorby tohoto přehledu pak měly vést, v kombinaci s daty získanými z funkčního provozu, k vytvoření matematického modelu akvaponického cyklu. Na akvaponické farmě provozované společností Flenexa plus s.r.o., která byla zdrojem potřebných procesních dat, měla být dále zpracována a vyhodnocena bilance energie a vody. Nakonec měla být v průběhu práce posouzena možnost implementace mikrořasového fotobioreaktoru do akvaponického cyklu. Úvod práce představuje motivaci vedoucí k potřebě inovovat dnešní potravinovou produkci. Kriticky jsou zhodnoceny predikce vývoje lidské populace, a to pak hlavně z pohledu dopadu, který by tento růst měl na zemědělskou produkci. Současná situace se na základě získaných poznatků ukazuje jako neudržitelná, primárně pak v oblastech vodohospodářství a energetické spotřeby. Následně je jako možné řešení vedoucí ke zlepšení udržitelnosti potravinové produkce zkoumána akvaponie. Akvaponie je definována a její jednotlivé komponenty jsou představeny z hlediska mechanismu jejich fungování a z pohledu jejich návrhu. Mezi popsané oblasti patří například principy tzv. coupled a decoupled akvaponie a popis možných typů hydroponického komponentu. V této části práce je pozornost věnována také představení cyklů jednotlivých živin v rámci akvaponie. Následující a poslední teoretická část práce je pak věnována mikrořasovému fotobioreaktoru. Jsou zde popsány mechanismy, jak motivující, tak odrazující od zakomponování bioreaktoru do akvaponie. V oblasti výhod se jedná hlavně o jeho roli ve stabilizaci pH a spotřebě toxikého amoniaku. Na druhou stranu jeho ekonomické dopady na profitabilitu akvaponie jsou velmi proměnlivé v závislosti na způsobu implementace. Samotný mikrořasový fotobioreaktor je pak v práci detailněji představen. Jednotlivé procesní ukazatele ovlivňující růst řas jsou rozebrány, a to společně s jednotlivými typy fotobioreaktoru, metodami sklizně a využitími pro vyprodukované mikrořasy. Na základě poznatků schromážděných v této práci pak lze jako nejvhodnější k implementaci do akvaponie doporučit hybridní fotobioreaktory, u kterých je většina osvětlení zajištěna v podobě slunečního svitu. Samotná experimentální část práce pak začíná popisem zkoumaného provozu společnosti Flenexa plus s.r.o. z pohledu aplikovaného akvaponického procesu. Jednotka podrobená měření byla provozně stabilní a využívala implementace hydroponického komponentu typu Deep Water Culture (DWC). Spolu s detailním popisem celého provozu jsou poskytnuty a vyhodnoceny vypracované bilance vody a energií. Pozornost je pak přesunuta k matematickým modelům vypracovaným a ověřeným na základě dat a poznatků shromážděných z provozu společnosti Felenexa plus s.r.o. Logika a algoritmy, na kterých jsou oba modely postaveny, jsou v této části vysvětleny a diskutovány společně s hlavními funkcemi a schopnostmi obou modelů. První, primárně statistický model je představen jako nástroj pro použití při uvádění akvaponie do provozu. Druhý, fyzikální model pak v uživatelsky přívětivém formátu představuje základ pro model řízení akvaponické farmy s mikrořasovým fotobioreaktorem. V neposlední řadě jsou nastíněny také cesty možného budoucího vývoje pro oba vytvořené modely. Práce je následně završena shrnutím a diskusí nad poznatky a výstupy získanými během celého tvůrčího procesu.

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Corrêa, Bernardo Ramos Simões. "Aquaponia rural." reponame:Repositório Institucional da UnB, 2018. http://repositorio.unb.br/handle/10482/32828.

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Dissertação (mestrado)—Universidade de Brasília, Faculdade UnB Planaltina, Programa de Pós-Graduação em Meio Ambiente e Desenvolvimento Rural, 2018.
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A aquaponia é um meio de produção agroecológica que agrega as atividades aquícolas e hidropônicas de maneira sinérgica e promove o reuso da água. Além de estar em constante desenvolvimento, assume papel de promotora da produção sustentável, da segurança alimentar e nutricional, assim como, da conservação dos recursos hídricos. Modelos de agroecossistemas que auxiliam no desenvolvimento rural sustentável devem ser difundidos aos agricultores que necessitam de novos métodos produtivos para constituírem renda e se sustentarem. A partir da concepção e implantação de um sistema aquapônico que utiliza tecnologias sociais, visando às produções piscícolas, vegetal e do monitoramento da qualidade da água no sistema, o objetivo deste trabalho foi analisar o crescimento animal e vegetal e da qualidade da água em sistema aquapônico de escala comercial situado no Distrito Federal, durante um período de 45 dias, entre Janeiro e Fevereiro de 2018. Para produção piscícola foi realizada biometria inicial e cada um dos seis tanques de peixes do sistema, de aproximadamente 10m³ de volume, foram povoados com 150 animais, com peso médio (p) de 337,76g, comprimento total (ct) de 26,96cm, comprimento padrão (cp) de 21,75cm e altura do dorso (ad) de 9,15cm e receberam duas alimentações diárias, totalizando 2% do peso vivo/tanque/dia. Para análise do crescimento, forma coletados os mesmos parâmetros em biometria final, após os 45 dias, e comparado os resultados iniciais e finais. Para alimentação foi utilizada ração comercial, de 5mm de granulometria e teor de proteína de 32%. Para a produção vegetal foram utilizadas sementes peletizadas de variedades de alfaces baby leaf, Itaúna Friseé e Atalaia Friseé, cultivadas em espumas fenólicas e isopor, em sistema de flutuação na densidade de 250plantas/m². Foram analisadas a taxa de vigor, no sétimo dia, e a produtividade das plantas ao final do experimento, através dos parâmetros de tamanho de raiz, peso da cabeça, diâmetro e altura da cabeça e número de folhas, além de comparado o crescimento entre as variedades. Para qualidade de água foram coletadas amostras a cada 3 dias em seis elementos do sistema aquapônico, na água da entrada, nos tanques de peixes, após o tratamento biológico, no tanque de transferência de solução nutritiva, na produção vegetal e na água de saída, sendo medidos e analisados os parâmetros de temperatura, pH, oxigênio dissolvido, amônia e nitrito. Os resultados obtidos foram analisados ao longo do período do experimento e os resultados das médias foram comparados com as recomendadas pela literatura, representando a qualidade da água no sistema. Os peixes apresentaram diferenças estatísticas significativas, através do teste t Student pareado, para todos os parâmetros (p = 548,52g; ct = 31,36cm; cp = 25,32cm; ad = 10,85cm) demonstrando crescimento ao longo do experimento. As variedades de alfaces apresentaram crescimento e tiveram diferenças estatísticas significativas em todos os parâmetros analisados a partir do teste t Student pareado, sendo que a variedade Atalaia Friseé apresentou resultados para os parâmetros de comprimento de raiz (cr), altura de cabeça (ac) e diâmetro de cabeça (dc) (cr = 31,81cm; ac = 11,58cm; dc = 11,93cm), maiores de média que de Itaúna Friseé (cr = 22,47cm; ac = 9,84; dc = 10,24cm). Para os parâmetros de peso da cabeça (pc) e número de folhas (nf), Itaúna Friseé (pc = 18,45g; nf = 10,67) apresentou maiores valores de médias que Atalaia (pc = 16,45g; nf = 8,06). A qualidade da água do sistema apresentou resultados compatíveis, em todos os parâmetros, para sistemas aquapônicos em recirculação. O estudo demonstrou que o sistema em tela pode ser disponibilizado como tecnologia social, produzindo peixes e vegetais integrados, diminuindo a utilização de água e evitando despejo de efluentes nos corpos hídricos.
Aquaponics is a means of agroecological production that aggregates aquaculture and hydroponic activities in a seric way and promotes the reuse of water. In addition, the role of promoting sustainable production, food and nutritional security, and the conservation of water resources. Agroecosystems models that support rural development should be disseminated to farmers who need new productive methods to become and sustain themselves. From the choice of an aquatic system, which may have been used for the treatment of plants, fish farming, plant and water quality monitoring system in the system, the animal process is the growth and quality of water in the aquaponic system of commercial scale located in the Federal District, during a period of 45 days, in January and February 2018. For the production of fish culture was carried out the initial biometrics and each of the six fish tanks of the system, of approximately 10m³ of volume, were populated with 150 average weight (w) of 337.76g, total length (tl) of 26.96cm, standard length (sl) of 21.75cm and height of the back (hb) of 9,15cm and two daily feeds, totaling 2% of live weight / tank / day. For analysis of growth, the new parameters in final biometrics, after 45 days, and the results of the initial and final results. Commercial feed, 5mm particle size and 32% protein content were used for feed. For vegetable production, pelleted seeds of baby leaf lettuce, Itaúna Friseé and Atalaia Frizeé, were cultivated in phenolic and styrofoam foams, in a flotation system in the density of 250 plants/m². The vigor rate, on the seventh day, and the plant productivity at the end of the experiment were analyzed through the parameters of root size, head weight, head diameter and head height and number of leaves, as well as the growth between the varieties. For water quality, samples were collected every 3 days in six elements of the aquaponic system, in the entrance water, in the fish tanks, after the biological treatment, in the transfer tank of nutrient solution, in the vegetal production and in the exit water, the parameters of temperature, pH, dissolved oxygen, ammonia and nitrite were measured and analyzed. The results obtained were analyzed over the period of the experiment and the results of the averages were compared with those recommended in the literature, representing the water quality in the system. The fish presented significant statistical differences, through the paired Student t test, for all parameters (w = 548.52g; tl = 31.36cm; sl = 25.32cm; hb = 10.85cm), showing growth throughout the experiment. The lettuce varieties presented growth and had statistically significant differences in all parameters analyzed from the paired Student t test, and the Atalaia Friseé variety presented results for the parameters of root length (rl), head height (hl) and head diameter (hd) (rl = 31.81cm; hl = 11.58cm; hd = 11.93cm), higher than that of Itaúna Frizeé (c = 22.47cm; hl = 9.84; hd = 10.24cm). For the parameters of head weight (hw) and leaf number (ln), Itaúna Friseé (hw = 18.45g; ln = 10.67) had higher mean values than Atalaia (hw = 16,45g; ln = 8,06). The water quality of the system presented compatible results in all parameters for aquaponic systems in recirculation. The study demonstrated that the on-screen system can be made available as social technology, producing integrated fish and vegetables, reducing the use of water and avoiding effluent discharge in water bodies.

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LIN, PO-YING, and 林伯穎. "Aquaponics Remote Monitoring System." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/fh3tky.

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碩士
國立高雄大學
電機工程學系-電子構裝整合技術產業碩士專班
106
This paper mainly integrates multiple sensor technology to complete an aquaponics symbiosis system that can be remotely monitored and adaptively adjusted. The system has monitoring devices such as lighting, temperature, and humidity for plant growth, and sensor of PH, water level, etc. for fish living. Combined programming of system temperature and water quality control for the living self-sustained aquaponics system. Human interface Tap command option from the far end is able to collected environmental data through various sensors. Control panel can perform water filtering and exhausting control automatically according to the installed program. The user can also examine all the related data in the system at any time by a remote CCD camera. In addition, detailed mechanisms and operation are described in detail in the paper.

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Lee, Yu-ching, and 李昱慶. "Aquaponics Mobile Information Systems Development." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/56748627372951617497.

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碩士
國立高雄第一科技大學
資訊管理研究所
102
The ERP of Taiwan developed in 1997, the world-class leading enterprise – SAP in German, established a branch company in Taiwan. Over the 17 years, SAP drove the industry a lot, especially electronics factory. For the past few years, there are many industries in Taiwan have consistently promoted innovation idea, so for the agriculture industry. The innovation of agriculture industry becomes a chief subject lately, and its main purpose is to make a progress technologically. Nowadays, the problem which agriculture in Taiwan have faced is not to be electronized completely. As well, it caused the problem which production data and the SOP doesn’t get optimized and made nothing promotion with the production and the survival rate. The research and experiment will follow the SOP and WorkFlow of Taiwan, and apply to the innovative management of technological agriculture. This research will process in the way of individual case, and according to the SOP of Aquaponics, its cultivation and management which developed by domestic scholarships, we created the Mobile Information Systems. By this research, the Aquaponics can be standardize and efficient to manage, make policy, track the progression, and monitor the process. We will start this research with modulize which including stock and shipment, (eg, the cost control of feeding stuffs, fries, and seeds, the module of production, (eg, the efficiency of produce, the rate of meat-offering, and the rate of living), can all show by form, and make users understand apparently and see it as a reference. This research can co-operate with the demand of market and do the judgment of produce batch by batch, and become a long-term and stable provider which can solve the problem of the agriculture-fishery industry in Taiwan. In the future, this research also can be modify and expand to other technology industry which is going to develop, and be the common goal in different industries in management.

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CHEN, HSIEN-CHANG, and 陳献章. "A Research on Aquaponics System." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/53969362715161747827.

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碩士
中華大學
電機工程學系
105
ABSTRACT There are three important survival elements in the human's life. There are water, food, and air. However, the environment of our life is polluted increasingly day by day. The healthy and safe food, clean water and air are not easy to obtain. Aquaponics system can support human’s health life, which it can make good use of water, produce non-toxic fish, and cultivate non-pesticide vegetables. In this thesis, aquaponics’ the principles and different architectures are described. The fish culturing environment is discussed, such as quality and pH of water, dissolved oxygen in the water, and temperature of water. The vegetables’ planting requirement parameters are also detailed, such as pH of planting bed, light, humidity and temperature. The aquaponics system eliminates the expensive discrete modular to construct systems, and using embedded system-on-a-chip to complete. The system can monitor and control including the water temperature of cultured fish, pH monitoring and regulation, dissolved oxygen monitoring and breathing cycle, Of course, the aquaponics can monitor and control vegetable planting parameters, like as the temperature, cultivation pH, light, humidity, and temperature. The aquaponics can easier adjust the various farming parameters, working conditions, and procedures without having to disassemble the hardware, which it is a flexible system. Keywords: aquaponics, embedded system-on-a-chip, dissolved oxygen

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Su, Chen-Hua, and 蘇振華. "Implementation of Aquaponics Based on Microprocessor." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/54q2b9.

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碩士
國立彰化師範大學
電機工程學系
105
Aquaponics includes hydroponic cultivation and aquaculture, and the automatic control system makes aquaponics more convenient. Hydroponics makes crops grow in order to avoid leaving the soil pests and diseases, soil fertility and other issues. And automated control allows growers to monitor various kinds of data at any time. This Paper proposed an aquaponics system. This system is based on a single chip as the control system. By using sensors with the feedback circuit can transfer the aquaponics system’s information back to the microcontroller and display on the LCM monitor. The system also uses the hardware device to achieve water circulation system, value detection and situation control. The hardware includes submerged motor, cheer pump, LED lighting, PH value detector and temperature sensor. This paper uses the low price micro-controller HT66F50 as a feedback signal detection and hardware control unit. With this system it can also displays the aquaponics system’s data and set the LED lighting time, achieving the purpose of automatic control. This system also improves the initial construction cost by low-cost single-chip application of the combination of low-power LED lighting systems and water recycling systems to reduce electricity fish dishes and hardware circuits cogeneration system production costs.

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Li, Chiao-Yuan, and 李巧媛. "Communication monitoring system applied to Aquaponics." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/84wp94.

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碩士
嶺東科技大學
資訊科技系碩士班
106
This paper mainly tests a set of controllers that can monitor water temperature, pH value, dissolved oxygen content and illuminance. The parameters are monitored by the controller and judged whether the parameter exceeds the standard value. If the standard is exceeded, the parameter will be contingency measures.In the compound cultivation pond, there is fish excrement, and if the wastewater is used to grow vegetables, it is a kind of fertilizer. Although the excreta and impurities in the water have been filtered, it is impossible to ensure that the water quality is the best living environment. And modern people are too busy, no leisure time to take care of fish or plants, and hope to remotely monitor and control compound hydroponic cultivation through the system.It is also hoped that users can interact with friends through mobile phone software to achieve a sense of accomplishment in growing vegetables and enhancing relationships among friends. The system reaches the auxiliary fish and vegetable symbiosis users to reduce the water quality time and to control the water data at any time. In order to improve crop growth rate and biological survival rate, it is hoped that it can be applied to different fishes and fruits and vegetables in the future to make the environment more environmentally friendly and to produce non-toxic fish without pesticides.The experimental results have confirmed that the user's personal measurement and care time can be greatly reduced. The user can save the water quality and instantly grasp the water environment.

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Buono, Edward Michael. "Aquaponics as a senior capstone design project." Thesis, 2014. http://hdl.handle.net/2152/27204.

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This report is an exploration of using aquaponics as a means to create a senior capstone design project in a K-12 setting. The relevant world issues related to food production and resource scarcity, as well as the need to integrate STEM subjects in a more interconnected way, justify this project as robust in a high school setting. The report gives details on the design and construction of a backyard aquaponic system, along with a discussion of the performance of this actual system. This experience informs the design of a curriculum for a high school engineering classroom which is presented in outline form.
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PENG, KUAN-JU, and 彭冠儒. "Organic Farming of Aquaponics Developing Trend Research." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/78444451553186365920.

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碩士
崇右技術學院
經營管理研究所
105
Due to climate change, artificial environmental damage, changes in population structure and socio-economic structure, resulting in fresh water resources and cultivated area will be reduced year by year. Taiwan will face a food crisis. Aquaponics is a new type of agriculture. It is one of the ways to solve these dilemmas. 　　This study explores the future development trend of aquaponics. By the data collection and expert in-depth interviews. Research on production management and marketing promotion. Found that aquaponics has the advantage of being easy to manage, produce fast, double economic outputs, non-toxic and protect the environment. Also found that the initial high cost of inputs, more system failure factors and leading to investment difficulties.

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LI, LONG-HUI, and 李龍輝. "Autonomous Aquaponics System with Embedded Solar Power." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/25048500490937099402.

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Chen, Wun-Ru, and 陳玟如. "Implementation of Improved Monitoring System of Aquaponics." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/452f38.

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碩士
國立勤益科技大學
資訊工程系
105
This paper improves the aquatic cultivation environment in the symbiosis system, establishment of symbiosis test system for the cultivation of plant and its environment. This paper presents the prototype of the symbiosis system, in the semi-closed soil cultivation environment, combined with soil moisture sensing, automatic water spray system, so that the general soil plants can grow well in the home, increase the survival rate. The system uses the latest LinkIt ONE Controller, use temperature and humidity, pH sensors to collect numerical analysis as a source of environmental information, take the submersible motor as the output of the environmental control. Planting vegetables with soil cultivation mode, together with ornamental fish farming model, using an effective plant light irradiation, with five layers of filtration to purify water quality, to achieve the overall ecological balance and the re-use of resources, to produce an organic non-toxic food environment.

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Cheng, Ting-Chung, and 鄭廷忠. "A Cloud Monitoring System for Intelligent Aquaponics." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/krv4j8.

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碩士
元智大學
電機工程學系甲組
107
This thesis proposes a Cloud Monitoring Aquaponics System. For monitoring water quality and environment details. This system optimized the balance of water cycle and reduced environmental pollution. This system have independent power supply circuit, so that it will not effected by power failure. It can also sense how much power of the battery. The microcontroller of this system can not only controlled the system, but also upload data to cloud. Allow users know details of fish tank anytime and anywhere. The system was implemented on a printed circuit board with an area of 58×66〖mm〗^2. The experimental results can accurately measure the values of all sensors. Such as Water level、 LED illuminance、PH values、Hydroelectric conductivity、Water temperature、Temperature and Humidity. Besides, we can monitoring the values on personal computer by USB interface, or login to cloud to view real-time data.

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