Journal articles: 'Biogas potentials'

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Kulichkova, Ganna I., Tetiana S. Ivanova, Mihael Köttner, Oleksiy I. Volodko, Svitlana I. Spivak, Sergiy P. Tsygankov, and Yaroslav B. Blume. "Plant Feedstocks and their Biogas Production Potentials." Open Agriculture Journal 14, no. 1 (November 13, 2020): 219–34. http://dx.doi.org/10.2174/1874331502014010219.

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Introduction: Nowadays, organic waste utilization and replacement of fossil energy sources with their renewable alternatives pose a challenging problem both for industrially developed and developing countries. Anaerobic digestion of organic biomass into biogas is considered an efficient technology for bioenergy production. Over the period from 2009 to 2018, the global biogas production capacities have more than doubled and are continuing to grow. The composition and the amount of biogas depend strongly on the type of the substrate. Various types of feedstock can be used for the production of biogas such as animal wastes, agricultural residues, and dedicated energy crops. Objective: To review biogas production potentials of energy crops and plant processing raw materials. Results: In the background of historical development and present state, the paper reviews the potential of different plant raw materials to be utilized for biogas production purposes. The potential of energy crops, agricultural residues, and wastes for biogas production is analyzed. International projects concerning energy crops grown on marginal lands are presented and commented on in the article. The approach of implementing crop rotation systems for industrial energy crop cultivation is described and recommended as beneficial for various purposes. The anaerobic degradability of biomass constituents, optimal process parameters, and biomass treatment for biogas production are discussed. C/N ration and lignocelluloses content in the substrate are considered among the most decisive parameters for AD and methane production. Various concepts of biogas bioreactor technologies have been studied depending on the substrate type. Conclusion: Plant feedstock may play a decisive role in biogas production as a renewable energy source. To avoid GHG release into the atmosphere, biogas facilities should be built within the closest vicinities to the places of existing garbage dumps, and waste management practice involving organic fraction separation in households and in the industry should be applied. Construction of biogas facilities is beneficial for environmental, economic, and social reasons.

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Zepter, Jan Martin, Jan Engelhardt, Tatiana Gabderakhmanova, and Mattia Marinelli. "Empirical Validation of a Biogas Plant Simulation Model and Analysis of Biogas Upgrading Potentials." Energies 14, no. 9 (April 24, 2021): 2424. http://dx.doi.org/10.3390/en14092424.

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Biogas plants may support the transformation towards renewable-based and integrated energy systems by providing dispatchable co-generation as well as opportunities for biogas upgrading or power-to-X conversion. In this paper, a simulation model that comprises the main dynamics of the internal processes of a biogas plant is developed. Based on first-order kinetics of the anaerobic digestion process, the biogas production of an input feeding schedule of raw material can be estimated. The output of the plant in terms of electrical and thermal energy is validated against empirical data from a 3-MW biogas plant on the Danish island of Bornholm. The results show that the model provides an accurate representation of the processes within a biogas plant. The paper further provides insights on the functioning of the biogas plant on Bornholm as well as discusses upgrading potentials of biogas to biomethane at the plant from an energy perspective.

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Eze and Agbo. "Maximizing the potentials of biogas through upgrading." American Journal of Scientific and Industrial Research 1, no. 3 (December 2010): 604–9. http://dx.doi.org/10.5251/ajsir.2010.1.3.604.609.

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Akhator, E. P., D. I. Igbinomwanhia, and A. I. Obanor. "Potentials for commercial production of biogas from domestic food waste generated in Benin Metropolis, Nigeria." Journal of Applied Sciences and Environmental Management 20, no. 2 (July 25, 2016): 369–73. http://dx.doi.org/10.4314/jasem.v20i2.19.

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The work reported in this paper investigated the potentials of commercial biogas production from biodegradable waste in Benin metropolis. The study was carried out in two phases. The first phase involved characterization of solid waste generated and determination of the quantity of potential feed stock for biogas production in Benin metropolis and the second phase was determination of the amount of biogas obtainable from biodegradable waste. The results from the study showed that an average daily generation rate of 0.358kg per person per day (ppd.) of solid waste is generated in study area. Food waste accounted for about 78.49% of the generated solid waste representing 0.281kg per person per day (ppd.) and a total daily food waste generation of 305.075tonnes. Based on this value for food waste the obtainable biogas was estimated to be 28,836.91m3 of biogas in Benin metropolis per day. This volume of biogas can provide cooking gas for about 24,076.91 families per month in Benin metropolis or alternatively can be utilised to generate about 49.023MW of electricity per day.Keywords: Solid waste management, food waste, anaerobic digestion, biogas

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Costa, Mônica S. S. de M., Luiz A. de M. Costa, Jorge de Lucas Junior, and Laércio A. Pivetta. "Potentials of biogas production from young bulls manure fed with different diets." Engenharia Agrícola 33, no. 6 (December 2013): 1090–98. http://dx.doi.org/10.1590/s0100-69162013000600002.

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Physical and chemical characteristics of manure are modified by different animal production systems. In cattle feeding system for young bulls there is an inversion of the proportion between forage and concentrate. In other words, the animals receive a smaller amount of forage compared to the traditional system. These changes in the manure characteristics involve changes in the treatment systems. The aim of this study was to determine the potential production of biogas of batch digesters fed with manure from young bulls that received two diets containing different proportions between forage and concentrate, with or without inoculums and submitted to three levels of temperature (25, 35 and 40(0)C). The evaluated parameters were total solids (TS) and volatile solids (VS) reduction and biogas potentials production. The digesters fed with manure from animals that received the diet 2 (80%C + 20% R) showed the largest reductions of TS and VS. About the potentials of biogas production there was interaction between the factors diet and inoculums, but no effects of temperatures. The treatment content manure from animals fed with diet 2 without inoculums presented the greatest potential of biogas production per kg of TS added (0.2123 m³).

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Hoffstadt, Kevin, Gino D. Pohen, Max D. Dicke, Svea Paulsen, Simone Krafft, Joachim W. Zang, Warde A. da Fonseca-Zang, Athaydes Leite, and Isabel Kuperjans. "Challenges and Prospects of Biogas from Energy Cane as Supplement to Bioethanol Production." Agronomy 10, no. 6 (June 9, 2020): 821. http://dx.doi.org/10.3390/agronomy10060821.

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Innovative breeds of sugar cane yield up to 2.5 times as much organic matter as conventional breeds, resulting in a great potential for biogas production. The use of biogas production as a complementary solution to conventional and second-generation ethanol production in Brazil may increase the energy produced per hectare in the sugarcane sector. Herein, it was demonstrated that through ensiling, energy cane can be conserved for six months; the stored cane can then be fed into a continuous biogas process. This approach is necessary to achieve year-round biogas production at an industrial scale. Batch tests revealed specific biogas potentials between 400 and 600 LN/kgVS for both the ensiled and non-ensiled energy cane, and the specific biogas potential of a continuous biogas process fed with ensiled energy cane was in the same range. Peak biogas losses through ensiling of up to 27% after six months were observed. Finally, compared with second-generation ethanol production using energy cane, the results indicated that biogas production from energy cane may lead to higher energy yields per hectare, with an average energy yield of up to 162 MWh/ha. Finally, the Farm2CBG concept is introduced, showing an approach for decentralized biogas production.

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Martinov, Milan, Nicolae Scarlat, Djordje Djatkov, Jean Francois Dallemand, Miodrag Viskovic, and Boris Zezelj. "Assessing sustainable biogas potentials—case study for Serbia." Biomass Conversion and Biorefinery 10, no. 2 (August 23, 2019): 367–81. http://dx.doi.org/10.1007/s13399-019-00495-1.

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Istiqomah, Nurul, Izza Mafruhah, Dewi Ismoyowati, and Nunung Sri Mulyani. "Analysis of Awareness on Biogas Adoption as the Alternative Energy through the Blue Economy Concept Application." Journal of Finance and Banking Review Vol. 1(1) 2016 1, no. 1 (December 19, 2016): 25–31. http://dx.doi.org/10.35609/jfbr.2016.1.1(4).

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Objective - The purpose of this study is (1) to analyse community perception in the use of biogas as an alternative energy, (2) to analyse whether variables such as income, age, education, cost savings, and livestock maintenance costs actually affect the willingness of community to use biogas, and (3) to develop a relationship among potential regional resources in the blue economy development. Methodology/Technique - The method used in this study is a collaboration between quantitative and qualitative models. For the first research objective, the qualitative theory approach focused on in-depth interviews and focus group discussions to develop a variety of potential economic relations in the implementation of the blue economy. For the second objective, descriptive statistics was used to identify differences in community perceptions on the use of biogas by the people in the Ngawi and Boyolali regencies. For third objective, model is used to analyze whether income, age, education, cost savings, and livestock maintenance costs affect community willingness to use biogas: Findings - The results show that (1) there are different community perceptions on biogas adoption in the Ngawi and Boyolali regencies, (2) variables such as income, age, education, cost savings, and livestock maintenance costs affect the willingness of community in using biogas, and (3) the blue economy concept can be developed by utilizing economic potentials in Ngawi towards an energy-independent village. Novelty - The use of biogas as an alternative energy needs to be developed so as to stimulate influential variables that can raise public awareness because the method is simple and exploits local potentials without waste. Type of Paper: Empirical Keywords: Blue Economy; Public Awareness; Logit Regression; ABCG actors.

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Meyer, A. K. P., E. A. Ehimen, and J. B. Holm-Nielsen. "Future European biogas: Animal manure, straw and grass potentials for a sustainable European biogas production." Biomass and Bioenergy 111 (April 2018): 154–64. http://dx.doi.org/10.1016/j.biombioe.2017.05.013.

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Meidiana, Christia, Zhuniart Ayu Perdanasari, and Dian Dinanti. "Pemanfaatan Kotoran Ternak sebagai Energi Terbarukan Melalui Pembangunan Biodigester Komunal." Jurnal Rekayasa Mesin 11, no. 3 (December 15, 2020): 383–93. http://dx.doi.org/10.21776/ub.jrm.2020.011.03.10.

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The potentials of energy from manure waste was calculated in this study aiming to develop biogas utilization in a rural area. The calculation was conducted based on the result from clustering the non-biogas farmer households which cannot afford individual anaerobic digester (AD). Spatial cluster analysis (SCA) and superimposed technique were used to determine the size of the groups and the location of ADs respectively. Value from SCA showed that the village’s settlement pattern is clustered feasible to apply communal AD for rural biogas development. Meanwhile, a superimposed technique using 3 parameters which are land availability, cow ownership, and topography, generates 43 clusters of farmer households that can supply biogas for cooking. The energy production is estimated at 8.96-39.68 m3/day/household, while the energy demand is approximately 0.65-3.48 m3/day/household. The calculation shows that there is remaining biogas that can be distributed to non-biogas farmer households. Using SCA, 75 non-biogas farmer households were identified to be potentially supplied by biogas. The total energy demand for both biogas and non-biogas farmers households is 2,147.34 MJ/day, while the total potential energy generation from all ADs is 24,560.64 MJ/day indicating a low biogas utilization rate which is only 8.7%. The percentage shows that biogas utilization for an energy source in Dusun Dresel can be more developed by enhancing the distribution network or by converting it into electricity to support rural energy security.

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Jenicek, P., J. Bartacek, J. Kutil, J. Zabranska, and M. Dohanyos. "Potentials and limits of anaerobic digestion of sewage sludge: Energy self-sufficient municipal wastewater treatment plant?" Water Science and Technology 66, no. 6 (September 1, 2012): 1277–81. http://dx.doi.org/10.2166/wst.2012.317.

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Anaerobic digestion is the only energy-positive technology widely used in wastewater treatment. Full-scale data prove that the anaerobic digestion of sewage sludge can produce biogas that covers a substantial amount of the energy consumption of a wastewater treatment plant (WWTP). In this paper, we discuss possibilities for improving the digestion efficiency and biogas production from sewage sludge. Typical specific energy consumptions of municipal WWTPs per population equivalent are compared with the potential specific production of biogas to find the required/optimal digestion efficiency. Examples of technological measures to achieve such efficiency are presented. Our findings show that even a municipal WWTP with secondary biological treatment located in a moderate climate can come close to energy self-sufficiency. However, they also show that such self-sufficiency is dependent on: (i) the strict optimization of the total energy consumption of the plant, and (ii) an increase in the specific biogas production from sewage sludge to values around 600 L per kg of supplied volatile solids.

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Cierpiał-Wolan, Marek, Bogdan Wierzbiński, and Dariusz Twaróg. "The Use of the Local and Regional Potential in Building Energy Independence—Polish and Ukraine Case Study." Energies 14, no. 19 (September 26, 2021): 6118. http://dx.doi.org/10.3390/en14196118.

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Biogas production in Poland and Ukraine seems to be a good way to both reduce greenhouse gas emissions and increase energy self-sufficiency by supplementing conventional energy sources. The aim of the research was to assess the potential of biogas production and the possibility of increasing it at the regional level of both studied countries and was conducted in 2018. The study included an analysis of seasonal heat demand, and the results showed biogas heat surpluses and shortages in each region. The financial side of the investment discussed using the example of the selected administrative unit showed that the construction costs of the biogas plant would be paid back after 7~9 years. The presented results also showed that Polish regions have much higher variation of biogas production potential (0.14~1.09 billion m3) than Ukrainian regions (0.09~0.3 billion m3). The analysis of the possibilities of increasing the potential based on the cultivation of maize in wastelands showed that in this respect, the Ukrainian regions have better opportunities compared to Polish regions. In the case of 20 regions, the maximum use of the potential of biogas should result in an increase in the share of renewable sources in the energy mix to above the level of 25%. Poland and Ukraine have comparable biogas production potentials of ~10 billion m3 annually, which results in a comparable number of biogas plants needed to consume that potential as well as the number of new jobs. The above analyses were also carried out at the LAU level (powiats and raions) where the potential of regional cooperation for four border regions is discussed.

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Miltner, M., A. Makaruk, J. Krischan, and M. Harasek. "Chemical-oxidative scrubbing for the removal of hydrogen sulphide from raw biogas: potentials and economics." Water Science and Technology 66, no. 6 (September 1, 2012): 1354–60. http://dx.doi.org/10.2166/wst.2012.329.

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In the present work chemical-oxidative scrubbing as a novel method for the desulphurisation of raw biogas is presented with a special focus on the process potentials and economics. The selective absorption of hydrogen sulphide from gas streams containing high amounts of carbon dioxide using caustic solutions is not trivial but has been treated in literature. However, the application of this method to biogas desulphurisation has not been established so far. Based on rigorous experimental work, an industrial-scale pilot plant has been designed, erected and commissioned at a biogas plant with biogas upgrading and gas grid injection in Austria. Data collected from the 12-month monitored operation has been used to elaborate performance as well as economic parameters for the novel desulphurisation method. The proposed technology offers significant operational advantages regarding the degree of automation and the flexibility towards fluctuations in process boundary conditions. Furthermore, the economic assessment revealed the high competitiveness of the chemical-oxidative scrubbing process compared with other desulphurisation technologies with the named advantageous operational behaviour.

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Olufemi, Fasosin Emmanuel, David Veronica, and Hero Godwin. "Effect of Anaerobic Co-Digestion on Microbial Community and Biogas Production." Biosciences, Biotechnology Research Asia 16, no. 2 (June 30, 2019): 391–401. http://dx.doi.org/10.13005/bbra/2754.

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A study was carried out to explore the biogas production potential of co-digestion using chicken droppings as inoculum and different substrate combinations. The various substrate combinations were mixed with the chicken droppings in the ratio 1:1 and subjected to anaerobic digestion using fabricated laboratory scale biodigesters, immersed in water bath and set at 37°C for a period of 30 days. The initial and final pH values of the digesters were recorded. The amount of biogas generated was measured by the method of downward displacement of water from a measuring cylinder. The bacteria and fungi associated with the production of biogas were isolated and then characterized using standard microbiological techniques. The microbial population isolated from the biodigesters include species of Bacillus, Clostridium, Escherichia, Pseudomonas, Yersinia, Methanosarcina, Methanobacterium, Penicillium and Aspergillus. It also indicated a slight shift from an alkaline medium to a slightly acidic environment in all the digesters. The result shows that all the substrate combinations demonstrated potentials for biogas production.

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Bernstad Saraiva Schott, Anna, Sanita Vukicevic, Irene Bohn, and Tova Andersson. "Potentials for food waste minimization and effects on potential biogas production through anaerobic digestion." Waste Management & Research 31, no. 8 (May 16, 2013): 811–19. http://dx.doi.org/10.1177/0734242x13487584.

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Adelere, E. Adeniran, and B. Onothoja Uduoghene. "The potentials of production of biogas from constructed wetland macrophytes." African Journal of Biotechnology 16, no. 33 (August 16, 2017): 1724–32. http://dx.doi.org/10.5897/ajb2017.16052.

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Nieto, P. P., D. Hidalgo, R. Irusta, and D. Kraut. "Biochemical methane potential (BMP) of agro-food wastes from the Cider Region (Spain)." Water Science and Technology 66, no. 9 (November 1, 2012): 1842–48. http://dx.doi.org/10.2166/wst.2012.372.

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An inventory of agro-food industry organic waste streams with a high potential for biogas transformation was studied in a logistically viable area (Cider Region, Asturias, Spain). Three industries were selected as the most viable ones: livestock, dairy and beverage. The potential for methane production from six wastes (beverage waste, BW; milled apple waste, MA; milk waste, MK; yogurt waste, YG; fats and oils from dairy wastewater treatment, F&O and cattle manure, CM) at five different substrate:inoculum ratios (0.25, 0.50, 0.75, 1.00 and 1.50) was evaluated in laboratory batch assays. Obtained methane yields ranged from 202–549 mL STP CH4·g VS waste−1, and the methane content in biogas ranged from 58–76%. The ultimate practical biochemical methane potentials were slightly affected by the substrate:inoculum ratio. The estimation of the regional fluxes of waste and methane potentials suggests anaerobic digestion as a sustainable solution for the valorization of the organic wastes generated in this Region.

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Mtamabari Simeon Torbira and Ebigenibo Genuine Saturday. "Biogas production from cow dungs using a modified fixed-dome digester." Global Journal of Engineering and Technology Advances 7, no. 3 (June 30, 2021): 224–30. http://dx.doi.org/10.30574/gjeta.2021.7.3.0066.

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A modified fixed dome digester with stirring mechanism has been designed and constructed and used for the anaerobic digestion of cow dung slurry at 5%-7% Total solid (TS) concentration within the mesophylic temperature range. The quality of biogas gas produced was between 54%-69% methane (CH4) content. The Carbon to Nitrogen ratio (C: N) varied between 35:1 - 45:1. Total biogas yield obtained over the detention period was about 261 L. The maximum and minimum temperatures recorded over the 95 days period was 32oC and 25 oC respectively. The volume of biogas yield, Vb (m3) was observed to increase with the percentage total solid, PTS (%). The details of the design and construction of the biogas digester plant and its cost are reported. The performance of the plant was very satisfactory. Investigation into the anaerobic digestion revealed that cow dung has great potentials for generation of biogas.

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Kalamaras, Sotirios D., Georgios Vitoulis, Maria Lida Christou, Themistoklis Sfetsas, Spiridon Tziakas, Vassilios Fragos, Petros Samaras, and Thomas A. Kotsopoulos. "The Effect of Ammonia Toxicity on Methane Production of a Full-Scale Biogas Plant—An Estimation Method." Energies 14, no. 16 (August 16, 2021): 5031. http://dx.doi.org/10.3390/en14165031.

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Ammonia accumulation in biogas plants reactors is becoming more frequently encountered, resulting in reduced methane (CH4) production. Ammonia toxicity occurs when N-rich substrates represent a significant part of the biogas plant’s feedstock. The aim of this study was to develop an estimation method for the effect of ammonia toxicity on the CH4 production of biogas plants. Two periods where a biogas plant operated at 3200 mg·L−1 (1st period) and 4400 mg·L−1 (2nd period) of ammonium nitrogen (NH4+–N) were examined. Biomethane potentials (BMPs) of the individual substrates collected during these periods and of the mixture of substrates with the weight ratio used by the biogas plant under different ammonia levels (2000–5200 mg·L−1 NH4+–N) were determined. CH4 production calculated from the substrates’ BMPs and the quantities used of each substrate by the biogas plant was compared with actual CH4 production on-site. Biogas plant’s CH4 production was 9.9% lower in the 1st and 20.3% in the 2nd period in comparison with the BMP calculated CH4 production, of which 3% and 14% was due to ammonia toxicity, respectively. BMPs of the mixtures showed that the actual CH4 reduction rate of the biogas plant could be approximately estimated by the ammonia concentrations levels.

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Hansen, T. L., Å. Svärd, I. Angelidaki, J. E. Schmidt, J. Jansen, and T. H. Christensen. "Chemical characteristics and methane potentials of source-separated and pre-treated organic municipal solid waste." Water Science and Technology 48, no. 4 (August 1, 2003): 205–8. http://dx.doi.org/10.2166/wst.2003.0255.

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A research project has investigated the biogas potential of pre-screened source-separated organic waste. Wastes from five Danish cities have been pre-treated by three methods: screw press; disc screen; and shredder and magnet. This paper outlines the sampling procedure used, the chemical composition of the wastes and the estimated methane potentials.

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Einfalt, Daniel, and Marian Kazda. "Characterisation of biogas plants on organic farms and potentials for improvement." Organic Agriculture 6, no. 4 (October 7, 2015): 243–54. http://dx.doi.org/10.1007/s13165-015-0133-3.

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Heiker, Mathias, Matthias Kraume, Anica Mertins, Tim Wawer, and Sandra Rosenberger. "Biogas Plants in Renewable Energy Systems—A Systematic Review of Modeling Approaches of Biogas Production." Applied Sciences 11, no. 8 (April 8, 2021): 3361. http://dx.doi.org/10.3390/app11083361.

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Biogas production is a relevant component in renewable energy systems. The paper addresses modeling approaches from an energy system, as well as from a process optimization, point of view. Model approaches of biogas production show different levels of detail. They can be classified as white, gray, and black box, or bottom-up and top-down approaches. On the one hand, biogas modeling can supply dynamic information on the anaerobic digestion process, e.g., to predict biogas yields or to optimize the anaerobic digestion process. These models are characterized by a bottom-up approach with different levels of detail: the comprehensive ADM1 (white box), simplifications and abstractions of AD models (gray box), or highly simplified process descriptions (black box). On the other hand, biogas production is included in energy system models. These models usually supply aggregated information on regional biogas potentials and greenhouse gas emissions. They are characterized by a top-down approach with a low level of detail. Most energy system models reported in literature are based on black box approaches. Considering the strengths and weaknesses of the integration of detailed and deeply investigated process models in energy system models reveals the opportunity to develop dynamic and fluctuating business models of biogas usage.

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Rahman, Khondokar M., MK Harder, and Ryan Woodard. "Energy yield potentials from the anaerobic digestion of common animal manure in Bangladesh." Energy & Environment 29, no. 8 (May 19, 2018): 1338–53. http://dx.doi.org/10.1177/0958305x18776614.

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This study provides previously unavailable field data relating to the biogas and methane yields from supervised authentic anaerobic digesters using the most common animal manure in Bangladesh: cow dung, poultry litter and town cattle market straw which are found to produce biogas yields of 0.034, 0.030 and 0.142 m3/kg respectively, with methane concentrations of 60% and 62% and 74% respectively and total solids of 19, 23 and 45 respectively. It also reports indications that in unsupervised plant issues with underfeeding, improper water mixing and irregular feeding are very common – all of which can significantly reduce yields. The figures above should thus be treated as maximum, optimum field values. These results provide reliable data for use in scaling up for national energy and investment planning, as they related directly to common scenarios of family smallholdings, common sized poultry farms and town cattle markets in Bangladesh where there is a reliance on combustion of local wood and dung biomass for cooking, creating air pollution, health and environmental degradation issues.

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Ponsá, Sergio, Teresa Gea, and Antoni Sánchez. "Short-time estimation of biogas and methane potentials from municipal solid wastes." Journal of Chemical Technology & Biotechnology 86, no. 8 (March 28, 2011): 1121–24. http://dx.doi.org/10.1002/jctb.2615.

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Miranda, Adélia P., Jorge de Lucas Junior, Maria C. Thomaz, Gener T. Pereira, and Ellen H. Fukayama. "Anaerobic biodigestion of pigs feces in the initial, growing and finishing stages fed with diets formulated with corn or sorghum." Engenharia Agrícola 32, no. 1 (February 2012): 47–56. http://dx.doi.org/10.1590/s0100-69162012000100006.

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The objective of this study was to evaluate the quality and the production of biogas and biofertilizer obtained from biodigester supplied with pig feces in the initial, growing and finishing stages, fed with diets formulated based on corn or sorghum. Twenty bench biodigesters were used with hydraulic retention time of 30 days and daily loads that contained 4 to 6% of total solids (TS) and 3.6 to 5.2% of volatile solids (VS). In the effluent of the biodigesters, mean levels of TS were observed ranging between 1.6 and 2.0% and of VS between 1.2 and 1.6%. The mean reductions of TS were 57.7 to 64.7% and of VS from 61.7 to 69.0%, and there was only difference in the finishing phase, in which the major averages reductions were produced by the biodigesters supplied with feces from animals fed with diets based on corn. In biodigesters supplied with feces from animals in the initial and growing stages fed with diets based on corn, were observed higher average productions of biogas and the greatest average potentials of biogas production. The average potentials obtained were 0.033; 0.181; 0.685; 0.788 and 1.132 m³ per kg of affluent, manure, TS added, VS added and VS reduced, respectively. No differences were found on the average content of methane in the biogas between diets and stages. The average concentrations of nutrients N, P, K, Ca, Mg, Na, Fe, Mn, Zn and Cu in the biodigester affluent and effluent, ranged between diets and stages.

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Nour, Abdurahman Hamid, Yasmeen Hafiz Zaki, Hybat Salih Mohamed, and Hesham Hussein Rassem. "The Potentials of an Integrated Ultrasonic Membrane Anaerobic System (IUMAS) in Treating Sugar Cane Wastewater." Indonesian Journal of Chemistry 19, no. 3 (May 29, 2019): 804. http://dx.doi.org/10.22146/ijc.40866.

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Excess levels of organic and inorganic matters in the discharge from sugarcane mill effluent (SCME) wastewater, causes the earnest environmental issue. In this study, a single unit integrated ultrasonic membrane anaerobic system (IUMAS) has been investigated for industrial sugarcane wastewater treatment. As the “Membrane-fouling” is one of the main constraints of IUMAS which eventually reduce the processing ability. In the present study, most researchers resort to cost reduction. IUMAS was alternatively applied as an economical approach for SCME wastewater treatment. The application of “Multiple-analysis” methods (COD, BOD, TSS) and three kinetic models during the treatment, suggested the specific range of organic loading rate to produce biogas. The result showed the increased methane gas production up to 80% in the biogas, with 94 -96% of COD removal efficiency from the SCME wastewater. Results concluded the effective efficiency of IUMAS to reduce the membrane fouling and treatment of SCME wastewater as well as enhanced production of methane gas.

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Prabhudessai, Vidhya, Bhakti Salgaonkar, Judith Braganca, and Srikanth Mutnuri. "Pretreatment of Cottage Cheese to Enhance Biogas Production." BioMed Research International 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/374562.

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This study evaluated the possibility of pretreating selected solid fraction of an anaerobic digester treating food waste to lower the hydraulic retention time and increase the methane production. The study investigated the effect of different pretreatments (thermal, chemical, thermochemical and enzymatic) for enhanced methane production from cottage cheese. The most effective pretreatments were thermal and enzymatic. Highest solubilisation of COD was observed in thermal pretreatment, followed by thermochemical. In single enzyme systems, lipase at low concentration gave significantly higher methane yield than for the experiments without enzyme additions. The highest lipase dosages decreased methane yield from cottage cheese. However, in case of protease enzyme an increase in concentration of the enzyme showed higher methane yield. In the case of mixed enzyme systems, pretreatment at 1 : 2 ratio of lipase : protease showed higher methane production in comparison with 1 : 1 and 2 : 1 ratios. Methane production potentials for different pretreatments were as follows: thermal 357 mL/g VS, chemical 293 mL/g VS, and thermochemical 441 mL/g VS. The average methane yield from single enzyme systems was 335 mL/g VS for lipase and 328 mL/g VS for protease. Methane potentials for mixed enzyme ratios were 330, 360, and 339 mL/g VS for 1 : 1, 1 : 2, and 2 : 1 lipase : protease, respectively.

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Feiz, Roozbeh, Jonas Ammenberg, Annika Björn, Yufang Guo, Magnus Karlsson, Yonghui Liu, Yuxian Liu, et al. "Biogas Potential for Improved Sustainability in Guangzhou, China—A Study Focusing on Food Waste on Xiaoguwei Island." Sustainability 11, no. 6 (March 14, 2019): 1556. http://dx.doi.org/10.3390/su11061556.

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As a result of rapid development in China and the growth of megacities, large amounts of organic wastes are generated within relatively small areas. Part of these wastes can be used to produce biogas, not only to reduce waste-related problems, but also to provide renewable energy, recycle nutrients, and lower greenhouse gases and air polluting emissions. This article is focused on the conditions for biogas solutions in Guangzhou. It is based on a transdisciplinary project that integrates several approaches, for example, literature studies and lab analysis of food waste to estimate the food waste potential, interviews to learn about the socio-technical context and conditions, and life-cycle assessment to investigate the performance of different waste management scenarios involving biogas production. Xiaoguwei Island, with a population of about 250,000 people, was chosen as the area of study. The results show that there are significant food waste potentials on the island, and that all studied scenarios could contribute to a net reduction of greenhouse gas emissions. Several socio-technical barriers were identified, but it is expected that the forthcoming regulatory changes help to overcome some of them.

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Cvetković, Slobodan, Tatjana Kaluđerović Radoičić, Bojana Vukadinović, and Mirjana Kijevčanin. "Potentials and status of biogas as energy source in the Republic of Serbia." Renewable and Sustainable Energy Reviews 31 (March 2014): 407–16. http://dx.doi.org/10.1016/j.rser.2013.12.005.

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Umar, Bobboi. "Biogas – A Promising Energy Supplement for Nigerian Economic Growth and Environment Protection." Energy & Environment 7, no. 3 (May 1996): 309–15. http://dx.doi.org/10.1177/0958305x9600700306.

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The problem of energy crisis continues to reverberate in many of the developing countries. In Nigeria, the majority of families living in villages and small towns depend on wood as their domestic fuel. This is because other conventional fuels such as kerosene, electricity and LPG are costly, unreliable or unavailable. Because of the serious environmental effects fuelwood harvesting poses, other cheaper, environment-friendly renewable energy sources such as biogas should be sought. This short review paper explores the potentials for and feasibility of biogas production in Nigeria where the technology is not yet adopted, and recommends how to make it viable in the country.

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Haruna, M., O. R. Momoh, and S. Bilal. "Effect of Thermal Pretreatment on the Yield of Biogas from Microcoleous Vaginatus." Nigerian Journal of Technological Development 17, no. 4 (March 11, 2021): 250–56. http://dx.doi.org/10.4314/njtd.v17i4.2.

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Biomass is being looked upon as one of the promising renewable energy sources for the future, with growing interest in microalgae conversion into biogas through anaerobic digestion. Recently, the ability of microalgae to treat waste water has doubled its potentials material today. However, in spite of the progress made in that regards, there are still challenges of algae conversion to biofuel, due to the presence of complex cell wall in some algae. Cell wall inhibits bacteria growth during degradation. In this research work 10 grams of Microcoleous vaginatus was treated in an oven at varying temperatures of 70, 75 and 80 oC for an hour, out of which 4 g was measured into 250 ml serum bottle for digestion at mesophilic temperature of 37 oC. Based on the results of proximate analysis, 69%increase in carbohydrate was attained with 72.7 – 148% reduction in moisture content. The biogas yield of untreated sample was 4.36 mLg−1 VS, while, pretreated samples at 70, 75 and 80 ℃ produced 8.39, 9.07 and 9.38 mLg−1VS (volatile solid) of biogas. This corresponds to 92, 108 and 115% higher than that of untreated samples. However, thermal treatment of M. vaginatus prior to digestion show positive effect on carbohydrate extraction and enhanced biogas and methane yield as well. Therefore, this makes the substrate a good feedstock for biogas production. Keywords: Biomass, pretreatment, thermal, anaerobic digestion, degradation, Microcoleous vaginatus.

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A, Adewumi, Lasisi K. H, Akinmusere O. K, Ojo A. O, and Babatola J. O. "COMPARATIVE STUDY OF ELECTROLYSIS-ENHANCED ANAEROBIC DIGESTION OF THREE SOLUBLE SOLID WASTES FOR BIOGAS PRODUCTION." INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY 4, no. 1 (October 11, 2020): 11. http://dx.doi.org/10.25105/urbanenvirotech.v4i1.8004.

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Aim: A comparative study of biogas production from three soluble solid wastes was conducted under anaerobic conditions by subjecting each waste to both conventional and electrolyzed digesters. Methodology and Results: Varying weight of each of the waste was mixed thoroughly with water and fed into five digesters. Three of these digesters were electrolytically-enhanced while the other two were not. The digestion of each of the wastes was monitored for 40 days at an ambient temperature ranging from 24 to 35oC. In all the digesters, biogas production started on the day 2, and attained maximum value on day 14 to17. Biogas production ended on the day 34 and 35 in digester 1a, 1b, 2a and 2b with production ending earliest in digester 3 containing wastewater on day 19. The highest biogas was produced in digester 2b containing electrolyzed digester loaded with poultry droppings) with a cumulative volume percentage of 91.41 as compared to its conventional state with a cumulative volume percentage of 85.19 and both states of the cow dung waste with cumulative volume percentages of 77.26 and 71.64 respectively. The least production occurred in digester 3 with a cumulative volume percentage of 4.59. Conclusion, significance and impact study: It is therefore concluded that poultry droppings has the greatest potentials for the generation of biogas as compared to cow dung in conventional and electrolyzed state and wastewater.

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Lantz, Mikael, Mattias Svensson, Lovisa Björnsson, and Pål Börjesson. "The prospects for an expansion of biogas systems in Sweden—Incentives, barriers and potentials." Energy Policy 35, no. 3 (March 2007): 1830–43. http://dx.doi.org/10.1016/j.enpol.2006.05.017.

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Xu, Ran, Bao Yi Zhang, and Fu Yu Yang. "Effects of Silage Additives on Biogas Production of Hybrid Penisetum." Advanced Materials Research 1070-1072 (December 2014): 112–20. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.112.

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This study investigated the effects of silage additives on the anaerobic digestion performance of hybrid penisetum to produce methane. Specifically, we evaluated the effects of adding lactic acid bacteria (0, 1.0×105, 1.5×105, 2.0×105 cfu.g-1) and cellulase (0, 0.01, 0.02, 0.03 g.t-1) during ensilage for 45 days on biogas production of hybrid penisetum. The silage additives lactic acid bacteria (1.0×105cfu.g-1, 2.0×105cfu.g-1) and cellulase (0.03g.t-1) had a positive effect on the anaerobic fermentation performance of hybrid penisetum silage. The hybrid penisetum amended with 0.03 g.t-1 of cellulase showed the best biochemical methane potentials, with a methane yield of 218.15lN kg-1 ODMadded. The results of this study clearly demonstrate that type and concentration of additives influence biogas production by silage.

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Hadi, Sapto Nugroho, Ida Widiyawati, and Furqon Furqon. "Optimalisasi Pengelolaan Pertanian Terpadu Guna Mendukung Terwujudnya Desa Mandiri Energi di Desa Sokawera, Kabupaten Banyumas." Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat 6, no. 2 (July 2, 2020): 112–20. http://dx.doi.org/10.29244/agrokreatif.6.2.112-120.

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Most residents in Sokawera Village work as farmers. Population income figures are relatively low, averaging less than IDR 10,000/capita/day. Sokawera village has local potentials that have not been optimally managed, namely independent cattle farms and smallholder coconut plantations. The aim of this activity is to empower the community to optimize the management of eco-friendly integrated agriculture sourced from local potential to support the realization of an energy self-sufficient village. The strategy used in this activity is through the PRA (Participatory Rural Appraisal) approach through the methods of education, training, demonstration plots, and assistance and are equipped with learning techniques while working (learning by doing). This activity began with the implementation of extension activities and transfer of knowledge about the benefits of eco-friendly integrated agriculture, training on the making and utilization of local resources to support the optimization of the management of eco-friendly integrated farming systems such as cattle dung into biogas, biogas waste into liquid and solid organic fertilizers, and coconut shell waste into liquid smoke biopesticides, training in making demonstrations and plots (demonstration plots) of healthy vegetable cultivation, training in processing local agricultural products into value-added products, and training in product marketing strategies through the design and manufacture of attractive product packaging. This activity provides knowledge and skills to the target community regarding the management of local potential such as cow dung waste and coconut shell to optimize environmentally friendly integrated agriculture. This activity is also a starting point for the realization of an energy self-sufficient village. Biogas which is processed from livestock manure is used successfully to replace LPG.

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Idire, S., B. Asikong, and D. Tiku. "Potentials of Banana Peel, Vegetable Waste (Telfairia occidentalis) and Pig Dung Substrates for Biogas Production." British Journal of Applied Science & Technology 16, no. 5 (January 10, 2016): 1–6. http://dx.doi.org/10.9734/bjast/2016/27454.

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Mauky, Eric, Sören Weinrich, Hans-Fabian Jacobi, Hans-Joachim Nägele, Jan Liebetrau, and Michael Nelles. "Demand-driven biogas production by flexible feeding in full-scale – Process stability and flexibility potentials." Anaerobe 46 (August 2017): 86–95. http://dx.doi.org/10.1016/j.anaerobe.2017.03.010.

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Yuan, Z. L., and P. W. Gerbens-Leenes. "Biogas feedstock potentials and related water footprints from residues in China and the European Union." Science of The Total Environment 793 (November 2021): 148340. http://dx.doi.org/10.1016/j.scitotenv.2021.148340.

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Pehlken, Alexandra, Kalle Wulf, Kevin Grecksch, Thomas Klenke, and Nina Tsydenova. "More Sustainable Bioenergy by Making Use of Regional Alternative Biomass?" Sustainability 12, no. 19 (September 23, 2020): 7849. http://dx.doi.org/10.3390/su12197849.

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Bioenergy is a building block of the ongoing transformation toward renewables-based energy systems. Bioenergy supply chains are regionally embedded and need to be seen in a place-based context with specific characteristics and constraints. Using a German case study, the potential of regionally embedded bioenergy chains in the past and the future is analyzed and discussed in this paper. The analysis integrates socio-ecological data and applies sustainability criteria in a multi-criteria decision analysis (MCDA) using the Preference Ranking Organization Method for Enriched Evaluation (PROMETHEE) methodology. The case study is focused on an industrial biogas fermenter in northwestern Germany, which currently uses predominantly maize as a substrate for bioenergy. Objectives for future development according to the ambitions of the UN Sustainable Development Goals and the EU Renewable Energy Directive (RED II) discussion are set and include the involvement of the farmer as biogas plant operator and other regional stakeholders. Since the focus of the research is put on the contribution of alternative biomass, such as grass, for the optimization of bioenergy settings, the question concentrates on how different mixtures of alternative biomass can be embedded into a sustainable management of both the landscape and the energy system. The main findings are threefold: (i) bioenergy supply chains that involve alternative biomass and grass from grasslands provide optimization potentials compared to the current corn-based practice, (ii) with respect to more sustainable practices, grass from grassland and alternative bioenergy supply chains are ranked higher than chains with increased shares of corn silage, and, more generic, (iii) optimization potentials relate to several spheres of the social–ecological system where the bioenergy structure is embedded. To conclude, sustainable enablers are discussed to realize optimization potentials and emphasize the integration of regional stakeholders in making use of alternative biomass and in making regional bioenergy more sustainable.

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Kulak, Michal, Nimish Shah, Niteen Sawant, Nicole Unger, and Henry King. "Technology choices in scaling up sanitation can significantly affect greenhouse gas emissions and the fertiliser gap in India." Journal of Water, Sanitation and Hygiene for Development 7, no. 3 (June 22, 2017): 466–76. http://dx.doi.org/10.2166/washdev.2017.005.

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Nearly 800 million people in India lack access to adequate sanitation. The choice of technology for addressing this need may have important sustainability implications. In this study, we used life cycle assessment to compare environmental impacts and nutrient recovery potentials of four different options for providing everyone in India with access to improved sanitation: (i) centralised wastewater treatment with sequential batch reactors (SBR), (ii) twin-pit latrines, (iii) latrines with source separation only and (iv) latrines with source-separation of urine and faeces connected to biogas plants. Results revealed large variability. Closing the sanitation gap through pit latrines would be expected to cause large increases of India's annual greenhouse gas (GHG) emissions, equivalent to 7% of current levels. Source separation only and centralised plants with SBR will be associated with lower GHG emissions, while the biogas scenario shows a potential to provide net emission reduction. The study revealed that source separating systems can provide significant quantities of plant available nitrogen and phosphorus at the country level. Future research should include more technological options and regions. Methodology piloted in this study can be integrated into the planning and design processes for scaling up sanitation in India and other countries.

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Marttila, Miika P., Ville Uusitalo, Lassi Linnanen, and Mirja H. Mikkilä. "Agro-Industrial Symbiosis and Alternative Heating Systems for Decreasing the Global Warming Potential of Greenhouse Production." Sustainability 13, no. 16 (August 12, 2021): 9040. http://dx.doi.org/10.3390/su13169040.

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Greenhouses require large amounts of energy, which is the dominant factor making greenhouses more emission intensive than open-field cultivation. Alternative heating systems, such as combined heat and power (CHP), biogas, and industrial waste heat, are continuously being researched for reducing the environmental impacts of greenhouses. This paper assesses utilizing industrial waste heat and CO2 enrichment in greenhouses as an example to propose “agro-industrial symbiosis” (AIS), to refer to a symbiotic co-operation between agricultural and industrial partners. The global warming potentials (GWPs) of greenhouse production using different heating systems are inadequately compared in the literature, which is the research gap addressed herein. Additionally, potential emission reductions of greenhouse production with industrial waste heat are yet to be assessed via lifecycle assessment (LCA). A comparative LCA of Finnish greenhouse tomato and cucumber production using various heating systems was conducted. Naturally, replacing fossil fuels with bioenergy and renewables significantly decreases the GWP. CHP systems result in decreased GWP only when using biogas as the energy source. Additionally, utilizing industrial waste heat and CO2 resulted in a low GWP. These results are applicable worldwide to guide political decision-making and clean energy production in the horticultural sector.

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Van Tran, Giang, Yuwalee Unpaprom, and Rameshprabu Ramaraj. "Effects of Co-substrate Concentrations on the Anaerobic Co-Digestion of Common Reed and Cow Dung." AJARCDE | Asian Journal of Applied Research for Community Development and Empowerment 3, no. 1 (December 24, 2019): 28–32. http://dx.doi.org/10.29165/ajarcde.v3i1.20.

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The biochemical methane potentials for common reed (Phragmites australis) and cow dung from northern Thailand, Chiang Mai city were investigated. This study aims to evaluate optimal parameters for the substrate of common reed and cow dung with different ratios (i.e. 1:1, 2:1 and 1:2) for improving the quality of methane content and biogas production. The effect of the co-substrate mixture was carried out in a batch reactor operated under room temperature and hydraulic retention time (HRT) of 45 days. The experiments were conducted in the fermenter with a working volume of 2.5 L and a total volume of 3L. The substrate was containing 15% of total solids (TS) and fermentation at initial pH 7. Biodegradation of substrate stated that chemical oxidation demand (COD) removal was 52.38%, the utilization of volatile solid was 75.46%. The results were achieved at ratio 2:1 (common reed and cow dung) reached the highest methane content and total biogas yield are 70% and 20,015 ml, respectively. Consequently, the results of this study suggested that mixing ratios of influence on the fermentation process and monitoring parameters were significant for further scale up or large-scale design of enriched methane content and biogas production.

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Bienert, Kathrin, Britt Schumacher, Martín Rojas Arboleda, Eric Billig, Samiksha Shakya, Gustav Rogstrand, Marcin Zieliński, and Marcin Dębowski. "Multi-Indicator Assessment of Innovative Small-Scale Biomethane Technologies in Europe." Energies 12, no. 7 (April 6, 2019): 1321. http://dx.doi.org/10.3390/en12071321.

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Innovative small-scale biogas plants, including upgrading solutions to affordable biomethane, are necessary to tap into the spatially distributed potentials of organic waste. This research identified and assessed novel small-scale technologies before market-entry maturity in the key process steps of the biomethane chain. We assessed technical, economic, and ecological indicators, and compared them to larger-scale references. The assessment included 7 pre-treatment, 13 digester, and 11 upgrading systems all at the small scale. We collected recently available data for Europe (2016–2018) for small-scale technologies (<200 m3; raw biogas per hour). In the literature we did not find such a comprehensive assessment of actual European small-scale innovative non-market-ready technologies for the production of biomethane. Several conclusions were drawn for each of the individual process steps in the biomethane chain, e.g., the economic indicator calculated for the upgrading technologies shows that the upgrading costs, for some of them, are already close to the larger-scale reference (about 1.5 €ct/kWh raw biogas). Furthermore, biomethane production is absolutely context-specific, which dramatically limits the traditional way to evaluate technologies. Hence, new ways of integration of the technologies plays a major role on their future R&D.

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Okamoto, M., T. Miyahara, O. Mizuno, and T. Noike. "Biological hydrogen potential of materials characteristic of the organic fraction of municipal solid wastes." Water Science and Technology 41, no. 3 (February 1, 2000): 25–32. http://dx.doi.org/10.2166/wst.2000.0052.

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The purpose of this study is to investigate the biological hydrogen production potential of individual organic fraction of municipal solid wastes (OFMSW) by batch experiments. Seven varieties of typical organic solid wastes including rice, cabbage, carrot, egg, lean meat, fat and chicken skin were selected to estimate the hydrogen production potential. Among the OFMSW, carbohydrate produced the most hydrogen through biological hydrogen fermentation compared with proteins or lipids. Subsequently, the biological hydrogen production potentials of some individual carbohydrate were measured: cabbage, 26.3–61.7 mL/g-VS; carrot, 44.9–70.7 mL/g-VS; and rice, 19.3–96.0 mL/g-VS. The hydrogen percentages of the total biogas produced from cabbage, carrot and rice were 33.9–55.1%, 27.7–46.8% and 44.0–45.6%, respectively.

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Atmika, I. K. A., I. G. A. K. Suriadi, and I. D. G. A. Subagia. "PENINGKATAN PARTISIPASI MASYARAKAT DALAM PENGELOLAAN POTENSI DESA BERBASIS IPTEK DI DESA BALUK." Buletin Udayana Mengabdi 17, no. 1 (January 1, 2018): 140. http://dx.doi.org/10.24843/bum.2018.v17.i01.p24.

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The themes of the KKN-PPM program in Baluk village are: Empowerment and Improvement ofcommunity participation in the management of the potential of science and technology-basedvillages to Mandiri villages through programs such as: public health programs: householdsanitation counseling and counseling of clean and healthy lifestyle in children. school children.Environmental program: reforestation activities in the area along the village road. Increasedproductivity of community / business groups in the production of soy milk through the introductionand application of blender machine technology. Cost-efficiency with the introduction and application of biogas / biogas portable biogas technology with the use of cow dung for a day-to-dayenergy source. Increased public participation in all KKN-PPM activities. Increased communityself-reliance in continuing every program that has been accompanied during KKN-PPM activities.Method of implementation of activities is divided into three stages. The first stage is preparationand briefing, second phase of implementation of activities in the field, and third stage evaluationand monitoring for correction and refinement of program sustainability. Preparatory phase beginswith field supervisors and students with the village apparatus and community leaders to determinethe priority scale of activities based on the conditions and potentials that exist in the community,this activity was held on July 20, 2017. The implementation of activities carried out withcounseling and practice in the field , as well as mentoring by students participating KKN during thefield. The dedication activity is held for one month starting from July 22, 2017 until August 27,2017. While the third stage is the evaluation and monitoring conducted by the team of fieldsupervisors and coordinators of KKN to see the impact and sustainability of programs that havebeen implemented.

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Fagundes, Daisa Stéfano, Marco Antonio Previdelli Orrico Junior, Ana Carolina Amorim Orrico, and Leonardo Oliveira Seno. "Mathematical models of anaerobic digestion for the treatment of swine effluents." Pesquisa Agropecuária Tropical 45, no. 2 (June 2015): 172–79. http://dx.doi.org/10.1590/1983-40632015v4531052.

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ABSTRACT Pig breeding results in the production of large amounts of waste, which can cause serious environmental problems, when handled incorrectly. This study aimed at testing mathematical models to estimate the parameters of anaerobic biodigestion in biodigesters as a function of the composition of swine effluents with and without separation of the solid fraction and hydraulic retention times (HRT). Semi-continuous biodigesters fed with swine effluents with and without separation of the solid fraction and managed for 15, 22, 29 and 36 days of hydraulic retention were used. The potential of biogas and methane production, as well as the reduction of total solids, volatile solids and chemical oxygen demand, were assessed as a function of the effluents composition. HRT was the variable that most influenced the variation of the models, followed by the contents of total and volatile solids. Uni and multivariate models presented high confidence indices, being classified as “great” at predicting the potentials of biogas and methane production and “good” at predicting the reductions of total solids, volatile solids and chemical oxygen demand. The models obtained in this study can be used to reliably predict the parameters of the anaerobic biodigestion process of swine effluents in semi-continuous tubular biodigesters.

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Longjan, Gurumwal George, and Zahir Dehouche. "Nutrient characterisation and bioenergy potential of common Nigerian food wastes." Waste Management & Research: The Journal for a Sustainable Circular Economy 36, no. 5 (March 30, 2018): 426–35. http://dx.doi.org/10.1177/0734242x18763527.

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Nigeria is the world’s largest producer of yam, cassava, cocoyam/taro, beans/cowpea, egusi/melon seeds and among the largest producers of groundnut/peanut, plantain, corn/maize and ugwu/pumpkin leaves. These food crops generate unavoidable food wastes that can contribute to environmental degradation through unsanctioned waste disposal methods. Such food wastes can be utilised as feedstock for the anaerobic digestion (AD) process to produce renewable energy. In order to determine the suitability of the food wastes as biofuel feedstock, they were experimentally analysed. Their waste content was determined, characterised and used to evaluate their bio-methane potential. The tests were performed using standard proximate analytical methods while the bioenergy potential of the samples was determined using the Baserga model. Results indicated a specific waste index range of 0.2–1.5, with corn having the highest waste proportion. The proximate analysis results of the wastes were within the range of common AD feedstocks such as energy crops and plant by-products. The bio-methane potentials of the samples varied widely with results ranging from 35–460 m3 tonne−1 on fresh weight and (5.4–6.2) × 105 m3 kg−1 on volatile solid basis. The methane potential varied between 51% and 58% of produced biogas. The energy potential of the food wastes was 31 TWh yr−1 which can make a substantial contribution to the bioenergy production of the country and meet up to the energy demand of 4.7 × 107 Nigerian households. Further studies would be required to determine the actual biogas yields of the food wastes.

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Loizou, Efstratios, Piotr Jurga, Stelios Rozakis, and Antoni Faber. "Assessing the Potentials of Bioeconomy Sectors in Poland Employing Input-Output Modeling." Sustainability 11, no. 3 (January 23, 2019): 594. http://dx.doi.org/10.3390/su11030594.

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Bioeconomy emerges under major current global challenges, both environmental and economic, that are related to the existence and use of bio-based resources; in this context, policy stakeholders and scientists seek and propose potential solutions. Bioeconomy is among the discussed strategies with the potential to offer solutions. In this framework, bioeconomy's importance increased over the last several years, thus it is essential to identify and monitor its role and significance in an economy and assess its potentials and intersectoral relationships. In this framework, the current study, through a general equilibrium analysis, aims to identify the sectors that are related to the bioeconomy and assess their potential in the Polish economy as such quantitative studies do not exist in the literature for Poland. For doing so, an Input-Output model was built, identifying initially the bioeconomy sectors and, afterwards, estimating their linkage coefficients in order to capture their direct and indirect impacts on the Polish economy. Results indicate that the fully bio-based sectors, such as the agriculture and food sectors, have higher potentials to induce knock-on effects in the economy than the mixed bio-based sectors. Thus, the current study’s results can offer important information to policy makers for decision making, such as in the case of planning development in any mixed bio-based sectors, such as biofuels or biogas.

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Schievano, Andrea, Barbara Scaglia, Giuliana D’Imporzano, Luca Malagutti, Annalisa Gozzi, and Fabrizio Adani. "Prediction of biogas potentials using quick laboratory analyses: Upgrading previous models for application to heterogeneous organic matrices." Bioresource Technology 100, no. 23 (December 2009): 5777–82. http://dx.doi.org/10.1016/j.biortech.2009.05.075.

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Boskovic, Goran, Mladen Josijevic, Nebojsa Jovicic, and Milun Babic. "Co-generation potentials of municipal solid waste landfills in Serbia." Thermal Science 20, no. 4 (2016): 1271–81. http://dx.doi.org/10.2298/tsci150626063b.

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Waste management in the Republic of Serbia is based on landfilling. As a result of such year-long practice, a huge number of municipal waste landfills has been created where landfill gas has been generated. Landfill gas, which is essentially methane (50-55%) and carbon dioxide (40-45%) (both GHGs), has a great environmental impact which can be reduced by using landfill gas in cogeneration plants to produce energy. The aim of this paper is to determine economic and environmental benefits from such energy production. For that purpose, the database of cogeneration potentials (CP) of 51 landfills in the Republic of Serbia (RS) was created. Amount of landfill gas generated at each municipal landfill was calculated by applying a first order decay equation which requires the data about solid waste production and composition and about some landfill characteristics. For all landfills, which have over 100,000 m3 each, a techno-economic analysis about building a CHP plant was conducted. The results have shown, that the total investment in 14 CHP plants with payback period of less than 7 years amounts ? 11,721,288. The total nominal power of these plants is 7 MW of electrical power and 7.9 MW of thermal power, and an average payback period is about 61 months. In addition, using landfill biogas as energy source in proposed plants would reduce methane emission for 161,000 tons of CO2 equivalent per year.

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Journal articles on the topic 'Biogas potentials'

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