Relevant bibliographies by topics / Processing of feather waste

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Processing of feather waste'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Processing of feather waste.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Processing of feather waste"

1

Jumini, Sri. "Alternative fish feed production from waste chicken feathers." International Journal of Science and Applied Science: Conference Series 1, no. 2 (August 14, 2017): 144. http://dx.doi.org/10.20961/ijsascs.v1i2.5140.

Full text
Abstract:
<p class="Abstract">In this This devotion has been done to provide education and training of the utilization of waste chicken manure, making flour chicken feathers as a fish feed alternative, that can overcome some of the problems that waste chicken feathers from the center cutting broiler chickens in the village Krasak enough, it causes pollution, and not used optimally; Low public awareness of awareness of environmental pollution; the lack of public knowledge about the utilization of waste chicken feathers, and processing technology, as well as to address the needs of fish feed more expensive, need alternative feed ingredients. This service program has provided insight to the public about waste chicken feathers so that it can be used as a new entrepreneurial startups. To achieve these objectives have been done of activity as follows: 1) Provide counseling and understanding of the community will be a negative impact on the environment of waste chicken feathers. 2) Provide counseling utilization of waste chicken feathers for people in nearby farms. 3) Make a chicken feather meal of chicken feather waste as an alternative fish feed to improve digestibility of chicken feathers. 3) The formation of the group for increasing the economic income of the family. This service activities program runs quite well with demonstrated some activity, namely: 1) Change Behavior Society (knowledge transfer); 2) Chicken Feather Extension Waste Utilization; 3) Making Unit Waste Chicken Feathers; 4) Establishment of New Business of Diversified Waste Chicken Feathers.</p>
APA, Harvard, Vancouver, ISO, and other styles
2

Wu, Xiao Qian, Li Chen, Zhang Jun Cao, and Mei Hua Zhou. "Feather Degradation and Keratinase Production by Stenotrophomonas maltophilia DHHJ." Advanced Materials Research 550-553 (July 2012): 1400–1403. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.1400.

Full text
Abstract:
Feathers, as a waste, are produced in large quantities from poultry processing industry every year. In this paper, feathers were biodegraded by Stenotrophomonas maltophilia DHHJ which was isolated from soil samples. The results show that the optimal conditions for the feather degradation and the keratinase production are 2.5% feather as substrate, the initial pH of 7.8 and cultivation at 40 °C for 5 days. Salts, KCl and NaCl, can increase feather degradation slightly. The proper concentration of Tween 80 can enhance keratinase production significantly. EDTA, as a metalloprotease inhibitor, greatly inhibits keratinolytic activity.
APA, Harvard, Vancouver, ISO, and other styles
3

Solcova, Olga, Jaroslav Knapek, Lenka Wimmerova, Kamila Vavrova, Tomas Kralik, Milena Rouskova, Stanislav Sabata, and Jiri Hanika. "Environmental aspects and economic evaluation of new green hydrolysis method for waste feather processing." Clean Technologies and Environmental Policy 23, no. 6 (April 9, 2021): 1863–72. http://dx.doi.org/10.1007/s10098-021-02072-5.

Full text
Abstract:
Abstract In recent years, an increase in the chicken meat process industry has been growing quickly, which brings a large amount of difficult to process waste, chicken feathers. These billions of kilograms create a serious waste problem over the world, furthermore, poultry feather processing is not only particularly difficult but also relatively expensive. In fact, there is no technology suitable for processing such huge quantities of feathers to guarantee sustainable development of the chicken meat industry together with processing of waste feathers. This article introduces a newly designed and original, highly efficient and environmentally friendly method of physicochemical hydrolysis of waste feathers. The hydrolysis is carried out in the presence of a weak organic carboxylic acid; thus, the resulting hydrolysate does not contain any salts or ashes. Therefore, a resulting hydrolysate, which includes a mixture of amino acids, peptides, proteins, glycoproteins and free fatty acids, is suitable for a variety of applications; e.g. as a chondroprotective agent in the treatment of joint diseases, nutrients for crop plants or targeted biostimulants for agriculture. This paper is focused not only on the process scale-up but also on environmental aspects and economic evaluations to bring general view of the process. Graphic abstract
APA, Harvard, Vancouver, ISO, and other styles
4

Jamiu Kolawole, Odusote, and Dosunmu Kayode Stephen. "DEVELOPMENT OF CHICKEN FEATHER REINFORCED INSULATION PAPERBOARD FROM WASTE CARTON AND PORTLAND CEMENT." Journal of Engineering Research [TJER] 16, no. 1 (May 9, 2019): 44. http://dx.doi.org/10.24200/tjer.vol16iss1pp44-52.

Full text
Abstract:
Cartons and chicken feathers are common wastes which we need to dispose in one way or another. Disposal problems associated with these wastes can be solved by processing them into useful products such as insulation and ceiling boards. In this study, chicken feather reinforced ceiling board was developed from waste carton and Portland cement. The quantity of the chicken feather was kept constant at 10% based on previous findings, while the cement and waste carton contents were varied to produce 5 samples of different compositions. The density of the board was found to range between 337.8 and 700.7 kg/m2, while the thickness swelling ranges between 0.81 and 9.02%. Water absorption values of the samples varied between 7.16 and 24.41%, while the compressive strength and modulus of elasticity values varied from 4.8 - 10.3 N/mm2 and 1.03 - 1.60 GPa, respectively. The values of modulus of rupture ranges between 1.34 and 2.2 MPa while the thermal conductivity of the samples ranges from 0.951 to 1.077 W/m.K. Density, compressive strength, modulus of elasticity, modulus of rupture and thermal conductivity of the samples increased as the cement content increased, while the thickness swelling and water absorption decreased with increase in cement content. The results revealed that the properties of ceiling boards developed from 80% cement, 10% carton and 10% chicken feather can compete favorably with most ceiling boards available in the market.
APA, Harvard, Vancouver, ISO, and other styles
5

Šafarič, Riko, Lidija Fras Zemljič, Miroslav Novak, Bogdan Dugonik, Božidar Bratina, Nenad Gubeljak, Silvester Bolka, and Simona Strnad. "Preparation and Characterisation of Waste Poultry Feathers Composite Fibreboards." Materials 13, no. 21 (November 4, 2020): 4964. http://dx.doi.org/10.3390/ma13214964.

Full text
Abstract:
The growth of poultry meat production is increasing industrial waste quantities every year. Feathers represent a huge part of the waste, and international directives and restrictions prevent landfilling of such biodegradable materials with high burning values. Furthermore, with their unique properties, poultry waste feathers are already a reliable resource for many byproducts, such as keratin extraction, fibres, hydrogel production, etc., all trying to achieve a high-added value. However, mass reduction of waste feathers into useful applications, such as development of alternative building materials, is also an important aspect. To take advantage of feathers’ thermal insulation capabilities, sound damping, and biodegradability, we worked towards mixing waste feathers with wood residues (wood shavings, dust, and mixed residues) for production of composite fibreboards, comparable to the market’s medium density fibreboards. The emphasis was to evaluate waste poultry feathers as the component of natural insulation composites, along with mixed waste wood residues, to improve their mechanical properties. Various composite fibreboards with different shares of wood and feathers were produced and tested for mechanical, thermal, and acoustic properties, and biodegradability, with comparison to typical particle boards on the market. The addition of waste feather fibres into the fibreboards’ structure improved thermal insulation properties, and the biodegradability of fibreboards, but decreased their bending strength. The sound transition acoustic loss results of the presented combination fibreboards with added feathers improved at mid and high frequencies. Finally, production costs are estimated based on small scale laboratory experiments of feather processing (cleaning and drying), with the assumption of cost reduction in cases of large industrial application.
APA, Harvard, Vancouver, ISO, and other styles
6

Gladiy, M. V., Yu F. Melnik, V. G. Kebko, Yu P. Polupan, and I. I. Murzha. "MODERN TECHNOLOGIES OF PROCESSING OF POULTRY WASTES AND PRODUCTION OF HIGH-PROTEIN FEED ADDITIVES: DOMESTIC AND FOREIGN EXPERIENCE." Animal Breeding and Genetics 51 (March 28, 2018): 302–10. http://dx.doi.org/10.31073/abg.51.41.

Full text
Abstract:
The article highlights different technologies of aviculture wastes recycling, first of all feather raw materials, for fodder purposes, in particular hydrothermal method, extrusion method, thermochemical method, and method of high temperature and high pressure. Hydrothermal method of recycling of meat and bone wastes in the horizontal vacuum boilers has quite satisfactory results, but ineffective in the processing of feather raw materials. More effective methods of raw feathers processing are ones with the use of extrusion process and thermochemical machining, but due to the complexity of processes, large amount of outlay and unsatisfactory sanitary and environmental conditions these technologies are not widely used in manufacturing. European experience of non-waste production and processing of aviculture wastes deserves deeper studying, particularly recycling of raw feathers, by processing method with high temperature and high pressure at continuous technological process and the possibility of using these technologies in the domestic large-scale production at poultry farms of industrial type. The purpose of the work was to study domestic and foreign advanced technologies of processing of non-food wastes of poultry products and production of high-protein feed additives and to consider the widespread introduction of the most effective ones in domestic manufacture on an industrial scale. The main wastes of processing of poultry products are gastrointestinal tract and its content, bone frame in the case of deep processing of carcasses, heads, legs, and other expired products, blood and, above all, feather raw materials, which totally constitute 20% of poultry weight. Recycling of meat and bone wastes from poultry slaughtering is carried out in horizontal vacuum boilers (so called Laps boilers), which are mainly used for animal origin wastes at sanitary-veterinary factories, united in association "Ukrvetsanzavod." The vacuum horizontal boiler for the production of fodder flour from animal raw materials wastes at the sanitary-veterinary utilization factories is a cylindrical metal frame located on stilts, which has a loading manhole and unloading pipes and on the outside of a cylindrical frame – a shell for heating of the frame with pipes for filing and withdrawal of the heat carrier and shaft, which is mounted along the length of the frame, with a mixer, fixed on the ends by bearings. Hot steam is the heat carrier for temperature processing of raw materials, which is supplied directly from the boiler room into the frame shell. In order to improve horizontal vacuum boiler for producing fodder flour from animal raw material wastes and to reduce its prime cost the special device was designed for its heating by using electricity. To do this on the outside of boiler (for its heating) there is a bullet made of the refractory material with three electric heaters, covered with a layer of insulation. In our country animal origin feed production has recently decreased, and the price of imported fodder is extremely high due to the reduction in livestock numbers and their processing. At the same time, Ukraine has gained intensive development of the poultry industry, particularly growing the broiler chickens and processing their meat at the large poultry farms of industrial type. Herewith, the substantial amount of non-food wastes from poultry products processing (gastrointestinal tract, bone frame in the case of deep processing of carcasses, dead poultry, blood, feather raw materials etc.) is not used for fodder purposes in many poultry farms. Furthermore, in order to get rid of wastes from poultry and livestock products processing, and instead of organizing high protein feed additives production from them, the technologies of destruction them by burning are developed, which can’t be considered reasonable solution to this problem. It is not only the reason of significant losses of valuable high-protein raw material for animal origin fodder, but also leads to environmental pollution. Therefore, in the conditions of a shortage of animal origin fodder, the use of non-food poultry products processing wastes is not only a great resource saving value, but simultaneously solves some environmental problems.
APA, Harvard, Vancouver, ISO, and other styles
7

El Boushy, A. R., A. F. B. van der Poel, and O. E. D. Walraven. "Feather meal—A biological waste: Its processing and utilization as a feedstuff for poultry." Biological Wastes 32, no. 1 (January 1990): 39–74. http://dx.doi.org/10.1016/0269-7483(90)90071-y.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Dmitrieva, Anastasia, Andrey Alexeyenko, Daria Belova, Nina Piskaeva, and Lyubovʼ Tereshchuk. "Streptomyces and Bacillus Keratinases: Properties and Uses." Food Processing: Techniques and Technology 50, no. 4 (December 30, 2020): 602–15. http://dx.doi.org/10.21603/2074-9414-2020-4-602-615.

Full text
Abstract:
Introduction. Feather waste is a promising source of feed protein. Its chemical composition is a valuable source of nutrients and can become an important component of feed additives. The research objective was to screen bacteria with a high keratinolytic activity and develop a bio-product based on a bacterial consortium in order to recycle complex organic poultry waste, thus reducing the anthropogenic load on the ecosystem. Study objects and methods. The research featured lyophilized strains of microorganisms provided by State Research Institute “Gosniigenetika” and feather waste provided by Kuzbass Broiler LLC (Russia, Novokuznetsk district). The study involved such advanced bioinformatic methods of data processing as phylogenetic identification of enzymes and InParanoid 8 algorithm for searching orthologous genes. The standard biotechnological methods included an electrophoretic analysis in polyacrylamide gel, an analysis of amino acid composition, a microscopy, and a high-performance liquid chromatography. Results and discussion. Keratinolytic strains were screened using protein sequence databases. The homologous keratinase strains with homology of more than 98% appeared to belong to the genera Streptomyces and Bacillus. The research helped to identify groups of enzymes that are potentially involved in keratin degradation. The selected enzymes were subjected to a phylogenetic identification based on InParanoid 8, a specialized algorithm of orthologous genes search. Conclusion. The experiment made it possible to select four strains of microorganisms with maximum enzymatic activity in relation to keratin. These strains included bacteria of the genus Bacillus, namely Bacillus licheniformis B-740, Bacillus pumilus B-508 and Bacillus subtilis ATCC 6051, and the bacterium Streptomyces albidoflavus ATCC 25422. These strains were used to create a biocompatible consortium for processing feather waste into a feed additive. The research confirmed the presence of biologically valuable substances in the obtained hydrolysates, as well as the possibility of their use as a high-protein component of feed additives for farm animals.
APA, Harvard, Vancouver, ISO, and other styles
9

Klingaman, Gerald, and G. L. Wheeler. "Use of Poultry Byproducts in a Production System for Greenhouse-grown Crops." HortScience 30, no. 4 (July 1995): 857F—857. http://dx.doi.org/10.21273/hortsci.30.4.857f.

Full text
Abstract:
In 1993, the Arkansas poultry industry produced 1.048 billion broilers with a total live weight of 2.54 million metric tons. Depending on the type of processing used, from 30% to 50% of live weight can end up in the waste stream. Three primary waste-stream products are generated by the poultry industry: feather meal, poultry meal, and bone meal. Feather meal contains ≈14% N, poultry meal 11% N, and bone meal 8% N. Byproduct additions were made to tomato, marigold, and impatiens transplants at the rate of 6, 12, 24 and 48 g/10-cm pot. The two highest rates killed plants outright, while the lower rates resulted in some growth reduction when compared to the control. Studies are under way to further evaluate the use of these byproducts in an organic production system for tomatoes and bedding plants.
APA, Harvard, Vancouver, ISO, and other styles
10

Salhi, Ahmed, Salah Kaci, and Abderrahim Boudenne. "Development of Bio-Composites Based of Polymer Matrix and Keratin Fibers: Contribution to Poultry Biomass Recycling." Materials Science Forum 714 (March 2012): 237–43. http://dx.doi.org/10.4028/www.scientific.net/msf.714.237.

Full text
Abstract:
Processing of the poultry feather biomass into useful products presents interesting opportunities of recycling agricultural waste material. According to a chemical process developed in our laboratory, poultry feathers were converted into wool, fibers or powder so as to meet several applications in many fields. Due to of their unique structure and to their physical properties, a suitable molding technique was performed in order to produce composite samples highly filled. The concentration range was varied from 10 to 50% by weight with an increase of 10, because of practical reasons. The morphological, thermophysical and mechanical investigations of polyester matrix filled with several concentrations of the keratin fibers show interesting results.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Processing of feather waste"

1

Holuša, Radomír. "Hydrolýza a následné zpracování drůbežího peří." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318843.

Full text
Abstract:
The goal of this thesis is to introduce and explain technology of hydrolysis and subsequent processing of poultry feathers and make calculation of line for processing poultry feathers. This thesis also includes technological scheme of processing line, design and final evaluation of chosen processing technology.
APA, Harvard, Vancouver, ISO, and other styles
2

Fan, Xiuling Broughton Roy. "Value-added products from chicken feather fibers and protein." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SPRING/Polymer_and_Fiber_Engineering/Dissertation/Fan_Xiuling_15.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Duval, Alexandra M. "Valorization of Carrot Processing Waste." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2155.

Full text
Abstract:
Commercial carrot processors produce up to 175,000 tons of carrot waste annually. Carrot Mash (CM) is the term referring to the waste by-product of peeled baby carrot processing. Transportation of carrot processing waste is expensive due to its high- water content (approx. 83-95%). High in bioactive compounds (carotenoids) and dietary fibers, it is expected that its conversion into a value-added by-product is of interest to the carrot processing industry. Hemicellulose-rich plant materials have proven to be a source of oligosaccharides, which are known for their beneficial prebiotic activity. The objectives of this research were to: 1) determine the effect of mechanical treatments on the extraction of water and bioactive compounds and evaluate the functional properties of carrot mash; 2) incorporate dried carrot mash into a beef patty and evaluate changes in pH, color, cooking yield, and texture; 3) apply an enzymatic treatment to carrot mash to promote the conversion of polysaccharides to oligosaccharides for prebiotic benefits. Mechanical separation of liquid and solid fractions by way of expeller pressing was efficient in extracting liquid while simultaneously increasing total solids by nearly 200%, the extraction of carotenoids by 1000%, and polyphenol content by nearly 97%. Mechanical treatments increased the fat binding capacity on average by 183% compared to untreated mash. The addition of unpressed carrot mash or expeller pressed carrot mash increased the cooking yield of a beef patty by 3-13% without significantly changing its textural properties. Enzymatically treating the carrot mash significantly increased the concentration of oligosaccharides up to 2.3%. These results suggest that carrot processing wastes can be physically and enzymatically modified and have an immense potential to be utilized as a functional ingredient in human food rather than being landfilled, composted or used as animal feed.
APA, Harvard, Vancouver, ISO, and other styles
4

Tobin, Amberly Hope. "OHD Processing of Coal Waste Materials." OpenSIUC, 2016. https://opensiuc.lib.siu.edu/theses/2045.

Full text
Abstract:
AN ABSTRACT OF THE THESIS OF Amberly Hope Tobin, for the Master of Science degree in Organic Geochemistry, presented on August 4th 2016, at Southern Illinois University Carbondale. TITLE: OHD PROCESSING OF COAL WASTE MATERIALS MAJOR PROFESSOR: Dr. Susan M. Rimmer This research addresses coal-waste utilization via the OHD process and the implications for both economic and environmental impacts. The goal of this project is to determine if coal-waste products can be processed by the OHD technique. Furthermore, this project will determine what types of products are produced from the coal-waste materials and will compare these to those produced by the OHD processing of raw coal. This research has the potential to be beneficial to the coal industry as OHD would allow production of high-value products from what is currently viewed as a waste material; additionally, this research will provide a way to recycle what is considered a hazardous waste product and provide an incentive to reclaim coal slurry ponds that are an environmental concern. A preliminary suite of grab samples from an active coal slurry pond along with a stream reject sample were obtained in order to determine if these types of materials could be processed via OHD. After these samples were deemed viable in the OHD process, core samples were taken from a large slurry pond. These cores were then ii sampled at 2 ft (0.61 m) intervals. The key analyses performed were geochemical, petrographic, OHD, and GC-MS. Geochemical analysis included carbon, sulfur, moisture, volatile matter, ash, and fixed carbon content of the coal-waste samples before OHD, and provided a basis for comparison with raw coal samples. Petrographic analysis was performed to determine the maceral composition before the OHD processing. The OHD process is the core technique of this research project. The preliminary slurry pond samples were processed in a small semi-continuous OHD reactor. While the stream reject and slurry pond core samples were processed using a continuous OHD reactor, as this type of reactor is best suited for fine-grained slurries. GC-MS was used to examine the OHD liquid products analysis in order to determine the types of compounds present in the final liquefied product; these products were then compared to raw coal OHD products in order to determine their economic potential. Petrography of the coal-waste materials showed that these samples did contain a notable amount of coal; predominantly vitrinites and inertinites were observed in the samples. Geochemical analysis proved that there were significant amounts of organic carbon in these materials, ranging between 25 and 37%. OHD processing was successful on all coal-waste materials, although the continuous OHD reactor tended to work better with the fine-grained slurries than the semi-continuous OHD reactor. The GC-MS analysis of the coal-waste OHD product showed very similar suites of compounds to that of a bulk coal OHD product; in general, almost all major compounds that are found in a typical coal OHD product were also found in the coal-waste OHD products. This suggests that these slurry ponds, which are typically regarded as waste products, could be viable feedstocks for OHD processing.
APA, Harvard, Vancouver, ISO, and other styles
5

Rezaee, Mohammad. "SUSTAINABLE DISPOSAL OF COAL PROCESSING WASTE STREAMS." UKnowledge, 2015. http://uknowledge.uky.edu/mng_etds/26.

Full text
Abstract:
Modern coal preparation facilities incorporate a wide array of solid-solid and solid-liquid separation processes for rejecting mineral matter to meet market specifications. The coarse mineral matter is typically placed into engineered refuse piles whereas the fine refuse is either stored in impoundments or co-disposed with the coarse refuse. The discharge water from the refuse material represents an environmental concern due to the potential release of trace elements, and the subsequent elevation of total dissolved solids and conductivity. The research findings reported in this dissertation addresses sustainable coal processing waste disposal through using strategies aimed at minimizing the environmental impacts. To provide an accurate and inexpensive method to assess the potential environmental effects of a given waste material, a conductivity screening-level test was modified to incorporate the impact of particle surface area. The test was used on various waste streams as well as the particle size and density fractions of each waste stream to identify environmentally sensitive components that can be separated from the bulk and isolated to prevent negative environmental impacts. The results were subsequently evaluated for long term mobility of trace elements under different disposal scenarios: (i) static leaching tests designed to simulate the quiescent conditions in a stable impoundment, and (ii) a dynamic test to simulate waste materials exposed to the atmosphere in variable wet/dry storage conditions. The results indicated that liberating, separating and isolating the highest density fractions (>2.68 SG) which represents less than 5% of the coal refuse materials results in significant abatement of total dissolved solids and conductivity. Required modifications of the coal processing plants were suggested to segregate and subsequently isolate the environmentally sensitive fractions from the remaining refuse material.
APA, Harvard, Vancouver, ISO, and other styles
6

Allan, Heidi. "The use of the Feather Squadron to identify auditory processing disorders in South African children : a comparative study." Diss., University of Pretoria, 2020. http://hdl.handle.net/2263/78439.

Full text
Abstract:
ABSTRACT Background: Accessibility to reliable and cost-effective assessment of auditory processing skills is limited in South Africa. With the development of tele-audiology, tools such as the Feather Squadron (FS) application have been developed to make this form of assessment more cost-effective and accessible. Purpose: To determine whether the performance on the FS correlates with performance on certain traditional assessment tasks, viz. Frequency Pattern Test (FPT) and Dichotic Digits Test (DDT), to establish its relevance in a South African population. Design: A retrospective, within-subject, comparative design was used. Study Sample: 66 South African participants, aged between 8 and 9 years of age and educated in English. Method: The FS, FPT and DDT were administered following a peripheral hearing assessment. The data were considered in two ways: Firstly, by comparing whether in each instance the participant had scored either at or below -2SD or whether they had scored above-2SD on the subtests of the FS and compared these scores to the same traditional tests, and secondly, by comparing the Z-scores obtained on the FS versus the Z-scores obtained on the same traditional test by applying a double arcsine transformation. Results: Using the -2SD criteria yielded no significant association when comparing the Dichotic Digits FS vs Dichotic Digits traditional test, or when comparing Tonal-Pattern Temporal Processing FS vs FPT in the humming or labelling conditions. Using the Z-score comparison, a statistically significant correlation was obtained when comparing the Tonal-Pattern Temporal Processing FS vs FPT, labelling condition and Dichotic Double-Words FS (linguistic) vs DDT. Conclusions: There is sufficient early evidence to suggest a statistically significant correlation between certain subtests of the FS with traditional tests of auditory processing to merit its use in the South African population. Further, using the broad pass/fail criteria of -2SD lacks the precision to adequately identify patterns of response and may need to be re-evaluated. Key Words: Feather Squadron, dichotic digits, frequency pattern, auditory processing, South Africa.
Dissertation (MA (Audiology)) University of Pretoria, 2020.
2022/12/31
Speech-Language Pathology and Audiology
MA (Audiology)
Restricted
APA, Harvard, Vancouver, ISO, and other styles
7

Yalcin, Sezgin. "Modeling Chromium Leaching From Chromite Ore Processing Waste." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/4/1053412/index.pdf.

Full text
Abstract:
Chromium has been widely used in many industrial applications. As a result of chromite ore processing, large amounts of chromite ore processing waste (COPW) material that can be classified as hazardous have been produced and released into the environment. Therefore, knowledge of migration behavior and leaching rates of chromium through waste materials and soils are of primary concern for environmentally sound management of land-disposal hazardous wastes. Haskö
k (1998) experimentally studied leaching rates of total Cr and Cr(VI) using laboratory columns packed with chromium COPW material produced by a sodium chromite plant. Based on the experimental results of Haskö
k (1998), present study aim, through mathematical modeling, to understand the dissolution kinetics of chromium during leaching of COPW material and to investigate the effectiveness of intermittent leaching involving a sequence of batch (dissolution) and leaching (mass flushing) operational modes. Obtained results show that a coupled system of two first order differential equations was able to capture the essential characteristics of leaching behavior of COPW material. In addition, the kinetics of chromium dissolution from COPW appeared to be controlled by the difference between aqueous phase concentration and a saturation concentration, by the mass fraction of dissolvable chromium remaining in the solid phase, and finally by the contribution of a constant dissolution rate manifested as a steady-state tailing behavior. As a result of performed simulations it was seen that intermittent leaching could be 65%and 35% more effective than continuous leaching for total Cr and Cr(VI), respectively.
APA, Harvard, Vancouver, ISO, and other styles
8

Roshdieh, Rana. "Alternative Waste Treatment System for Poultry Processing Plants." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/46421.

Full text
Abstract:
The objective of this research was to design an alternative wastewater treatment system for turkey processing plants to recover energy and reduce N and P to allowable discharge levels. The objective included: 1. Determine the quantity and quality of biogas produced from the turkey processing wastewater (TPW) and COD reduction efficiency. 2. Design a waste treatment system and validate proof of concept for simultaneous P and N removal with a goal of attaining effluent concentrations of 0.1 mg/L and 4 mg/L, for P and N, respectively. A lab-scale complete mixed anaerobic digester was used for turkey processing wastewater (TPW) digestion and biogas recovery running for 6 months. Along with the anaerobic digester, a two-sludge system called A2N-SBR consisting of an anaerobic-anoxic sequencing batch reactor and an attached growth post-nitrification reactor was added for biological nitrogen and phosphorus removal running for 3 months. Biogas production yields of 778 + 89 mL/gVSadded and 951.30 mL/g COD were obtained through anaerobic digestion. Also, an energy balance was conducted on a pilot scale digester for a turkey processing plant with wastewater production of 2160 m3/d and using a combined heat and power (CHP) enginefor conversion of biogas to heat and electricity. Although the biogas yield achieved in a complete mixed reactor was relatively lower than yields obtained in previous studies using reactors such as UASB, still a complete mixed reactor can be a good choice for biogas recovery from TPW and can be used for codigestion with some specific turkey processing byproducts for biogas recovery. Nitrogen and phosphorus removal in the A2N-SBR system were 47% and 75%, respectively, and during the study the nitrogen and phosphorus removal mean concentration in effluent did not meet the nutrient limits specified in the objectives. Average TP and TN in the effluent were 3.2 mg/L and 137 mg/L, respectively. Throughout the study, the nitrification reactor biofilm was not completely developed. Incomplete nitrification and poor settling might be the reasons that quality obtained in effluent was low. To improve the process condition in A2N-SBR, online monitoring of pH, dissolved oxygen (DO) and oxidation reduction potential (ORP) can help to optimize each stage in the SBR and stages duration can be set based on the results.
Master of Science
APA, Harvard, Vancouver, ISO, and other styles
9

Yildirir, Eyup. "Chemical engineering of waste plastics via hydrothermal processing." Thesis, University of Leeds, 2015. http://etheses.whiterose.ac.uk/10704/.

Full text
Abstract:
Utilizing a simple, cost effective, feasible and efficient recycling process for waste plastics, which are largely produced from non-renewable sources, is strategically important for a sustainable environment and economy. In Europe, landfilling is still the major waste management method; therefore new routes for recycling are being researched to increase the recycling rates. In this research, hydrothermal processing was used for recycling of waste carbon fibre reinforced plastics (CFRP) and printed circuit boards (PCB) in a batch reactor were investigated. Also, the applicability of the hydrothermal process was tested on refuse derived fuel (RDF), as it is a good representative of municipal solid waste which is a complex waste mixture consisting of plastics, other biodegradable materials and inorganic materials. The ability of supercritical water to degrade the resins and plastics in the composite wastes was largely influenced by the presence of different additives and/or co-solvents. Water at supercritical conditions was able to remove 92.6% of the resin from the CFRP waste in the presence of KOH and 10 wt% H2O2. In the work with PCB, 94% of the resin removal was achieved with alkalis, at zero residence time. The carbon fibre was recovered by preserving 78 % of its tensile strength due to the loss in the mechanical properties as a result of oxidation on the carbon fibre surface. When mixtures of ethylene glycol and water were used as solvent, without any addition of a catalyst, 97.6 % resin removal was achieved at 400oC. The liquid obtained from hydrothermal processing of PCB mainly composed of phenol, and phenolic compounds, which are the precursors of the original thermosetting resin. The liquid effluent from the degradation of CFRP with water and ethylene glycol mixture became too complex for recovery and so was gasified under supercritical water conditions. In the presence of NaOH and ruthenium oxide as catalysts the produced fuel gas consisted of H2, CH4, CO2, CO and C2-4 hydrocarbon gases. The carbon fibres recovered using ethylene glycol co-solvent preserved its mechanical properties and used for the manufacture of new composite materials. The mechanical tests showed that the new composites with recovered carbon fibres had enhanced mechanical properties similar to those made from virgin carbon fibres. Finally RDF was subjected to hydrothermal gasification process to produce fuel gas. Up to 93% carbon gasification efficiency was achieved in the presence of 5 wt% RuO2/γ-Al2O3 catalyst, producing a fuel gas mostly consisting of H2, CH4, and CO2 with a heating value of 22.5 MJ/Nm3. The gross calorific value of the product gas increased to 32.4 MJ/Nm3 in the presence of NaOH, as a result of carbon dioxide fixation as sodium carbonate. Also, high yields of hydrogen were obtained in the presence of both the NaOH and ruthenium catalysts, as both promoted the water-gas shift reaction.
APA, Harvard, Vancouver, ISO, and other styles
10

Ayangbile, Gbemiga A. "Utilization of crab processing waste and chitin associated with the waste as feed for ruminants." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54763.

Full text
Abstract:
Four experiments were conducted with crab processing waste. Addition of 1.5% propionic/formic acid prevented degradation up to 14 d. Desirable fermentation was achieved when 32% of the treated crab waste was ensiled with 32% straw, 16% molasses, and 20% water with or without .1% microbial inoculant. The pH of the silage was lowered and high concentration of lactic acid was observed. Use of .2% NaOCl or .4% H₂O₂ retarded spoilage of crab processing waste up to 7 d. Ensiling of the treated waste (32%), straw (32%), molasses (16%), and H₂0 (20%) indicated that the chemical used in preservation enhanced fermentation. Addition of .4% NaOCl and 1.5% acetic acid to the crab processing waste retarded degradation up to d 4. The trimethylamine (TMA) concentration and NH₃ evolution were highest for the untreated waste while the lowest concentration for TMA and NH₃ evolution were observed for the NaOH-treated waste. Addition of 1% NaNO₂ or combination of .4% NaOCl/CaOCl (1:1, w/w) preserved the waste for up to 10 d. The evolution of NH₃ and H2₂S, and TMA concentration were lowest for the waste treated with 1% NaNO₂. Apparent digestibility of DM, organic matter, CP, energy, NDF, ADF, cellulose and hemicellulose decreased linearly (P<.01) with level of crab waste-straw silage in diets containing 0, 50, and 100% crab waste-straw silage. Nitrogen retention increased linearly (P<.05) with level of crab waste-straw silage. The apparent absorption was higher (P<.01) and retention was positive (P<.05) for Ca, Mg, Na, K, Cu and Fe with sheep fed the highest level of crab waste-straw silage. Daily gain, feed efficiency and carcass characteristics tended to be higher for steers fed 30% crab waste-straw silage, dry basis. The flavor and overall desirability of cooked meat were not adversely affected by feeding up to 30% crab waste-straw silage, dry basis. Modifying the existing methods of quantifying chitin showed that initial decalcification or deprotinization of the samples with chemicals are not necessary. Similar values were obtained for chitin when ADF/ashing method was compared to the ADF/deacetylation method. These methods prevented loss of chitin during preparation. Digestibility of chitin was higher (58%) for sheep fed 100% crab waste-straw silage compared to the value of 37% in sheep fed 50% crab waste-straw silage. When ADF/ashing method was used in quantifying chitin, higher disappearances were obtained for samples containing 100% crab meal kept in the rumen or incubated in vitro for 72 h.
Ph. D.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Processing of feather waste"

1

Plan, Muthuraja Wela Master, Wetland Conservation Project (Sri Lanka), Integrated Resources Management Programme in Wetlands, Sri Lanka. Central Environmental Authority, ARCADIS Euroconsult (Firm), and Sri Lanka. Ministry of Environment & Natural Resources, eds. Waste processing. Battaramulla, Sri Lanka: Central Environmental Authority, 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Bockris, J. O'M. Electrochemical processing of solid waste. [Washington, DC: National Aeronautics and Space Administration, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Yaser, Abu Zahrim, ed. Advances in Waste Processing Technology. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4821-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Torrecilla, José S. The olive: Its processing and waste management. New York: Nova Science Publishers, 2010.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

C, Glaub J., and Diaz Luis F, eds. Unit operations models for solid waste processing. Park Ridge, N.J., U.S.A: Noyes Publications, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

The olive: Its processing and waste management. Hauppauge, N.Y: Nova Science Publishers, 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

L, Bishop Paul. Leachability of metals from mineral processing waste. Cincinnati, OH: National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 2004.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

India. Central Pollution Control Board. Fish processing waste disposal practices and options. Delhi: Central Pollution Control Board, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Boushy, A. R. Y. Poultry Feed from Waste: Processing and use. Boston, MA: Springer US, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Boushy, A. R. Y. Poultry feed from waste: Processing and use. London: Chapman & Hall, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Processing of feather waste"

1

Veit, Hugo Marcelo. "Processing Techniques." In Electronic Waste, 13–17. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15714-6_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Kasper, Angela Cristina, Nichele Cristina de Freitas Juchneski, and Hugo Marcelo Veit. "Mechanical Processing." In Electronic Waste, 19–38. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15714-6_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Bertuol, Daniel Assumpção, Eduardo Hiromitsu Tanabe, Lucas Meili, and Hugo Marcelo Veit. "Hydrometallurgical Processing." In Electronic Waste, 61–71. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15714-6_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Bertuol, Daniel Assumpção, Eduardo Hiromitsu Tanabe, and Lucas Meili. "Electrometallurgical Processing." In Electronic Waste, 73–79. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15714-6_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Espinosa, Denise Crocce Romano, Viviane Tavares Moraes, and Jorge Alberto Soares Tenório. "Pyrometallurgical Processing." In Electronic Waste, 81–85. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15714-6_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Arvanitoyannis, Ioannis S., and Persefoni Tserkezou. "Fish Waste Management." In Seafood Processing, 263–309. Chichester, UK: John Wiley & Sons, Ltd, 2013. http://dx.doi.org/10.1002/9781118346174.ch11.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Shah, M. D., A. R. Gupta, and R. B. Vaidya. "Production of High-Quality Compost from Feather Waste: A Novel, Cost-Effective and Sustainable Approach for Feather Waste Management and Organic Soil Management." In Waste Management and Resource Efficiency, 533–42. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7290-1_45.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Childress, P. C., and A. P. Zotov. "Liquid Waste Processing." In Nuclear Submarine Decommissioning and Related Problems, 109–14. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1758-3_15.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Bilitewski, Bernd, Georg Härdtle, and Klaus Marek. "Cost Considerations for Waste Processing Facilities." In Waste Management, 625–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-662-03382-1_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Wilbey, R. Andrew. "Water and Waste Treatment." In Food Processing Handbook, 399–428. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607579.ch13.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Processing of feather waste"

1

Schuller, Bjorn, Matthias Wimmer, Lorenz Mosenlechner, Christian Kern, Dejan Arsic, and Gerhard Rigoll. "Brute-forcing hierarchical functionals for paralinguistics: A waste of feature space?" In ICASSP 2008 - 2008 IEEE International Conference on Acoustics, Speech and Signal Processing. IEEE, 2008. http://dx.doi.org/10.1109/icassp.2008.4518656.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Clark, Matt. "What About Small Facilities?" In 19th Annual North American Waste-to-Energy Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/nawtec19-5420.

Full text
Abstract:
The EPA defines a small municipal waste combustor (MWC) Class II facility as having an aggregate plant capacity of 250 tons per day (TPD) or less. Some commercial Waste-to-Energy (WTE) operators consider that there is an economy of scale required that is much greater. So what about small facilities? Can public entities or private companies make the economics work? This paper will offer a status of existing small facilities, available combustion technologies and identify known planned expansions or new facilities. The paper will feature one such facility with an interesting past and a bright future including plans for expansion: the Perham Resource Recovery Facility in Perham, Minnesota. This cogeneration facility plans to increase its capacity from 112 TPD to 200 TPD along with adding upfront processing to improve fuel quality.
APA, Harvard, Vancouver, ISO, and other styles
3

Williams, Martin C., Paul A. Murray, and John Stairmand. "A Review of Power Fluidics for Nuclear Waste Mobilization." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4605.

Full text
Abstract:
Power Fluidics technology has been used for handling nuclear fluids for over 30 years. The key feature of the technology is the absence of mechanical moving parts in contact with the process fluid, so giving inherent plant safety and reliability. Power fluidic pumps use compressed gas to effect liquor flow, and are capable of pumping without flow dilution and without susceptibility to erosion or blockage. Applications for Power Fluidics technology were initially in the field of sludge pumping in new-build nuclear processing plants, and a number of designs of pumps capable of handling high-viscosity, high-SG materials were developed. More recently, Power Fluidics technology has been further developed for ‘retrofitting’ to achieve mobilization and retrieval of radioactive wastes and sludges from existing tanks and silos. This paper focuses on this application and will describe how Power Fluidics equipment has been developed and implemented to mix, sample and retrieve waste from existing storage tanks or silos. Case studies of several recent successful projects are included.
APA, Harvard, Vancouver, ISO, and other styles
4

XiHuai Qiang and Hongyan Feng. "Preparation of protein-surfactant with waste feather." In 2011 International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2011. http://dx.doi.org/10.1109/rsete.2011.5965769.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Adams, Jonathan F. W., Simon R. Biggs, Michael Fairweather, Jun Yao, and James Young. "Transport of Nuclear Waste Flows: A Modelling and Simulation Approach." In ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2011. http://dx.doi.org/10.1115/icem2011-59136.

Full text
Abstract:
The task of implementing safer and more efficient processing and transport techniques in the handling of nuclear wastes made up of liquid-solid mixtures provides a challenging and interesting area of research. The radioactive nature of nuclear waste means that it is difficult to perform experimental studies of its transport. In contrast, the use of modelling and simulation techniques can help to elucidate the physics that underpin such flows and provide valuable insights into common problems associated with their transport, as well as assisting in the focusing of experimental research. Two phase solid-liquid wasteforms are commonplace within the nuclear reprocessing industry. Currently, there is waste, e.g., in the form of a solid-liquid slurry in cooling ponds and liquid flows containing suspensions of solid particles feature heavily in the treatment and disposal of this waste. With nuclear waste in the form of solid-liquid sludges it is important to understand the nature of the flow, with particular interest in the settling characteristics of the particulate waste material. Knowledge of the propensity of pipe flows to form solid beds is important in avoiding unwanted blockages in pipelines and pumping systems. In cases where the formation of a solid bed is unavoidable, it is similarly important to know how the modified cross-sectional area of the pipe, due to the presence of a bed, will affect particle behaviour through the creation of secondary flows effects that are also common to square duct flows. A greater understanding of particle deposition in square ducts and pipes of circular cross-section is also of significant and broad industrial relevance, with flows containing particulates prevalent throughout the nuclear, pharmaceutical, chemical, mining and agricultural industries. A greater understanding of particle behaviour in square ducts and circular pipes with variable bed height is the focus of this current work. The more computationally expensive but accurate technique of large eddy simulation (LES) is compared against the current industrial standard technique of Reynolds-averaged Navier-Stokes (RANS) modelling to ascertain how each can be best utilised to understand and predict the mobilisation and transport of nuclear waste sludges. Both approaches are coupled with a Lagrangian particle tracking (LPT) technique and have been applied to examine particle dispersion and deposition behaviour across a range of Reynolds numbers in square duct flows. Single-phase predictions are found to be in good agreement with the available experimental data. LES and RANS results are in agreement over particle deposition rate, although disagree on the final locations of deposited particles. The RANS based work is further extended to consider particle deposition in circular pipes with variable bed height (Bh). Average particle distance from the nearest wall for spherical particles with sizes ranging from 5–500 μm is monitored in pipes of circular cross-section with bed heights = 0, 0.25 and 0.5 of the pipe diameter. The particle deposition rate is compared over particle sizes and for all values of Bh, with the implications for sludge transport in practical situations commented upon. The presence of an increasing Bh is found to increase particle deposition for smaller particles. The presence of a bed is found to have little, if any, effect on larger, gravity dominated, particles.
APA, Harvard, Vancouver, ISO, and other styles
6

Soekoco, Asril S., Muhammad Ichwan, Agus Hananto, and Dody Mustafa. "Application of chicken feather waste as a material of nonwoven insulator." In Proceedings of the 17th International Conference on Ion Sources. Author(s), 2018. http://dx.doi.org/10.1063/1.5054508.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Staples, A. T., S. Latinwo, S. J. Parkingson, and J. Appleton. "Successful Team Working in Major Nuclear Decommissioning Project: Progress on Environmental Restoration at UKAEA Winfrith." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4622.

Full text
Abstract:
Following a successful contract relationship between UKAEA and RWE NUKEM Ltd. to provide operational and decommissioning services for Building A59 (a post-irradiation examination facility) at UKAEA Winfrith, additional major tasks under the WOMAD (Winfrith Operations, Maintenance, and Decommissioning) Project were competitively won by RWE NUKEM. The WOMAD Project advances implementation of the overall environmental remediation mission for the UKAEA Winfrith site. This paper describes the four main parts of the WOMAD Project at Winfrith that are being conducted by RWE NUKEM. The WOMAD Project consists of the following tasks: • Care and maintenance of the two large nuclear reactors SGHWR and DRAGON. • Operation of Building A59 for 1 year followed by decommissioning and demolition. • Conditioning and immobilization of ∼350,000 litres of radioactive sludge in 500-litre drums followed by demolition of the sludge storage tanks. • Refurbishment of a storage facility and emplacement of the drummed waste. These tasks are performed by RWE NUKEM and the overall project is managed by UKAEA within the constraints imposed by the site licensee. The work is being implemented via a contract with RWE NUKEM using the New Engineering Contracts (NEC) suite of contracts (Options A and C) as established by the Institution of Civil Engineers. This framework was chosen because it facilitates good project management practices and encourages a team approach. This strategy has been taken to heart within the project and many joint initiatives are being used to develop an effective team that is working toward a common goal. In the relatively short time since contract award (March 2000), decommissioning in Building A59 is currently ahead of schedule and a number of technical hurdles have been overcome. The new facility for processing the external active sludge tank (EAST) wastes has been designed, planning permission has been obtained, and construction has begun. The first phase of safety submittals was also completed, and a Stage 2 Letter of Comfort was obtained from UK Nirex following a series of small-scale active development tasks. This presentation will feature current progress regarding schedule, cost, and quality aspects and will be an update on the position given to the IMechE Decommissioning Conference in 2001 [1] and the IBC Decommissioning Conference in 2002. [2]
APA, Harvard, Vancouver, ISO, and other styles
8

Hata, Haruhi, Kaoru Yokoyama, and Noritake Sugitsue. "Systematic Chemical Decontamination Using IF7 Gas." In ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2011. http://dx.doi.org/10.1115/icem2011-59036.

Full text
Abstract:
Since 1979, Uranium enrichment technology has been researched through the gas centrifuge method, at Ningyo-toge Environmental Engineering Center of Japan Atomic Energy Agency (JAEA). In addition, the Demonstration Plant, that is final stage test facilities, was operating continuously from 1988 to 2001. As a result, a lot of residues accumulated in the plant. Most of this accumulation was found be uranium intermediate fluoride. The basic decommission policy of JAEA is that equipments of gas centrifuge will be decontaminated by sulfuric acid immersion method for clearance and reuse. In our plan, approximately 90% of metals will be cleared and reused, and then the remaining 10% will be disposed of radioactive waste. We propose a combination of sulfuric acid immersion method and the systematic chemical decontamination as an efficient method for decontamination of uranium enrichment facilities. This paper focuses on the method and performance of systematic chemical decontamination using IF7 gas. The following (Figure 1) shows our decommission policy and position of systematic chemical decontamination by IF7 gas for uranium enrichment plant. The IF7 treatment technique belongs to the systematic decontamination technology. It has the high performance decontamination technique for the plant that accumulates the uranium intermediate fluoride, such as UF4, UF5, U2F9, and U4F17, which exist in the uranium enrichment plant through the Gas Centrifuge, called GCF. The one of characteristics of the IF7 treatment, the secondary waste is just an IF5 and little residues. In addition, this IF5 can be reused as materials for making new IF7 gas. The IF7 treatment can also be performed in the room temperature and very low pressure like a 10–45hPa. Furthermore, the IF7 treatment is a simple method using chemical reaction. For this reason, we hardly need to care about secondary reaction with the exception of the reaction with IF7 gas and the uranium intermediate fluoride. This is a very important feature when applying to a large-scale plant. In order to carry out the IF7 treatment, we only set up a few equipments in GCF uranium enrichment plant, which were IF7 feeding equipment and two circulating pumps. IF7 gas cylinders are seated in IF7 feeding equipment. This is the only equipment. Figure 2 shows the IF7 treatment system. We carried out the IF7 treatment for the four cascades in the uranium enrichment Demonstration Plant. The weights of uranium residue in the cascades were approximately 700kgU per cascade prior to the IF7 treatment. In the IF7 treatment, we were able to find the near-optimal processing condition. As a result, we could confirm the IF7 treatment period for one cascade which was 60 days. The main factor to determine the IF7 treatment period is the pressure and the flow rate of reaction product gas (UF6 and IF5 mixture gas) exhausted from the cascade. Although we carried out the IF7 treatment with the maximum value of the flow rate, which our facility has, it is possible to further shorten the IF7 treatment period by setting a higher gas flow rate. Moreover, after the IF7 treatment, we evaluated the uranium recovery rate for cascades and the residues’ uranium weight in the main equipment of GCF. In addition, in the evaluation of the uranium recovery rate, we enable to confirm the uranium recovery rate of all cascades achieved more tan 98%. Furthermore, the average of uranium recovery rate more than 99% in the cascade that has been processed at the end. As a result, radioactive concentration of uranium in the main parts of the GCF fell to 1.0B q/g and below.
APA, Harvard, Vancouver, ISO, and other styles
9

Mishakov, Ilya V., Alexey A. Vedyagin, Ivan A. Strel'tsov, and Anna A. Shiryaeva. "Processing of 1, 2-dichloroethane into structured feather-like carbon materials." In 2008 Third International Forum on Strategic Technologies (IFOST). IEEE, 2008. http://dx.doi.org/10.1109/ifost.2008.4602960.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Darchieva, N. A., S. I. Il'ina, and D. YU Grachev. "Plasma waste processing." In SCIENCE OF RUSSIA: GOALS AND OBJECTIVES. L-Journal, 2020. http://dx.doi.org/10.18411/sr-10-08-2020-20.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Processing of feather waste"

1

Haselow, J. S., E. L. Wilhite, and A. L. Stieve. Defense Waste Processing Facility. Office of Scientific and Technical Information (OSTI), May 1990. http://dx.doi.org/10.2172/6420984.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Petersen, R. D. Microwave waste processing technology overview. Office of Scientific and Technical Information (OSTI), February 1993. http://dx.doi.org/10.2172/120858.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Henderson, J. F. 327 legacy waste processing plan. Office of Scientific and Technical Information (OSTI), May 1998. http://dx.doi.org/10.2172/10148899.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Circeo, Louis J., Robert A. Newsom, Robert C. Martin, and Lamar C. Carney. Plasma Waste Processing Demonstration System. Fort Belvoir, VA: Defense Technical Information Center, July 2001. http://dx.doi.org/10.21236/ada402814.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Paar, Christopher, Stuart Turner, Grant Crowell, and Jennifer Ryan. Wood Waste Processing in Iowa. University of Iowa, May 1996. http://dx.doi.org/10.17077/s7dd-4wjm.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

LeClair, M. D., J. A. Pottmeyer, and R. A. Hyre. Waste Receiving and Processing Module 2A waste certification strategy. Office of Scientific and Technical Information (OSTI), October 1994. http://dx.doi.org/10.2172/10192361.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Murphy, James Anthony, Brent J. Palmer, and Keith Joseph Perry. Sodium Bearing Waste Processing Alternatives Analysis. Office of Scientific and Technical Information (OSTI), December 2003. http://dx.doi.org/10.2172/910715.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Genders, D., N. Weinberg, and D. Hartsough. Electrochemical processing of nitrate waste solutions. Office of Scientific and Technical Information (OSTI), October 1992. http://dx.doi.org/10.2172/6509974.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Ebert, W. L., C. T. Snyder, Steven Frank, and Brian Riley. Designing Advanced Ceramic Waste Forms for Electrochemical Processing Salt Waste. Office of Scientific and Technical Information (OSTI), March 2016. http://dx.doi.org/10.2172/1326909.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Hill, Katie, and Anna Stanfield. Saltstone Waste Characterization Analysis - Salt Waste Processing Facility (SWPF) Waste Stream (Q4 CY2020). Office of Scientific and Technical Information (OSTI), April 2021. http://dx.doi.org/10.2172/1804661.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Processing of feather waste' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography