Готові списки джерел за темами / Recycling processing

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Добірка наукової літератури з теми "Recycling processing"

Автор: Grafiati

Опубліковано: 22 лютого 2025

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Статті в журналах з теми "Recycling processing"

Kovalčík, Jakub, Martin Straka, Peter Kačmáry, and Tomáš Pavlík. "CATALYST PROCESSING AND RECYCLING." Acta Tecnología 7, no. 3 (September 30, 2021): 99–104. http://dx.doi.org/10.22306/atec.v7i3.118.

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Discussed auto catalysts contain interesting quantities of platinum noble metals, palladium and rhodium according to the type of auto catalyst, thereby becoming a possible source of these metal aims to acquaint themselves with catalysts in general, their history and last but not least the possibilities of processing and obtaining noble metals for further use. The article deals with knowledge at the theoretical level of use of methods in processing depleted catalysts. It is pyrometallurgical and hydrometallurgical methods. The platinum group metals (PGMs) palladium, platinum, and rhodium represent the key materials for automotive exhaust gas treatment. Since there are currently no adequate alternatives, the importance of these metals for the automotive industry is steadily rising. The high value of PGMs in spent catalysts justifies their recycling. The state-of the-art technology is to melt the ceramic carrier and collect the precious fraction in a liquid metal bath. As the feed material has quite high melting points, huge amounts of energy are required for this process. Hydrometallurgical treatments of the spent catalysts offer the possibility to recycle the PGMs with less energy and time demands. Moreover, automotive catalysts contain further valuable materials to improve the exhaust gas treatment. These compounds, like cerium oxide, cannot be recovered in pyrometallurgical processes.

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Metzler, Jack, and Thuy Le. "Tritium Recycling (Processing) Facility Design." Fusion Technology 28, no. 3P2 (October 1995): 1359–64. http://dx.doi.org/10.13182/fst95-a30601.

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Petrova, A. A., M. A. Zyryanov, S. O. Medvedev, I. A. Voronin, and I. A. Petrova. "Integrated recycling of wood waste using recycling technology." E3S Web of Conferences 420 (2023): 07002. http://dx.doi.org/10.1051/e3sconf/202342007002.

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The activity of the Russian timber processing industry is inextricably linked to the constant generation of wood waste. The paper considers types of wood waste as well as the possibility of their integrated use in the conditions of wood processing plant. We present the results of experiments on the production of wood fibre boards with the addition of prepared wood waste: bark, sawmill waste, format-cutting waste, trapped fibre and hardwood waste, and determine the optimum percentage of the studied waste in the total wood mass.

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Wędrychowicz, Maciej. "The Recycling of Secondary Waste in Polish Recycling Companies." Rocznik Ochrona Środowiska 23 (2021): 715–30. http://dx.doi.org/10.54740/ros.2021.050.

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This article analyses the recycling of secondary waste in Polish recycling companies. An innovative method of processing PCBs is presented and trends that should be followed by plants processing non-ferrous metal waste are indicated. In conclusion, it is emphasised that the Polish WEEE recycling market is still at the early development and growth stage and the most important goals that enterprises should set themselves include cost optimisation, improvement of waste management logistics and increases in the level of recycling.

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Myhre, Marvin, Sitisaiyidah Saiwari, Wilma Dierkes, and Jacques Noordermeer. "RUBBER RECYCLING: CHEMISTRY, PROCESSING, AND APPLICATIONS." Rubber Chemistry and Technology 85, no. 3 (September 1, 2012): 408–49. http://dx.doi.org/10.5254/rct.12.87973.

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ABSTRACT For both environmental and economic reasons, there is broad interest in recycling rubber and in the continued development of recycling technologies. The use of postindustrial materials is a fairly well-established and documented business. Much effort over the past decade has been put into dealing with of end-of-life tires from landfills and vacant fields. It is only in the last few years that more business opportunities for recycled rubber have come to the forefront. Reclaiming rubber has gained increasing interest, more so in Europe than in North America. In those areas, much work has been done to refine the processes used. The major form of recycled rubber is still ground rubber. This is produced either by cryogenic, ambient, or wet grinding. The material is then used neat with sulfur/curatives, binders, or cements. The binders are normally moisture curable urethanes, liquid polybutadienes, or latex to produce items such as mats, floor tiles, and carpet undercushion. Recycled rubber is still used as tire derived fuel, but less so than 10 years ago. Another outlet is as an additive to asphalt. Recycled rubber can be used in the plastics industry, for which much development is being done. Large particle size ground rubber or chips are used in civil engineering applications, landscaping, or artificial turf. In terms of applications, most use is outside of the conventional rubber industry. Cost factors are still addressed in the tire industry. As of 2012, approximately 8–10% recycled material is used in tires. The biggest obstacles to further adaption are safety factors and property loss. Better methods are needed for treating or modifying the rubber surface and for regenerating the rubber through devulcanization. Devulcanization gives the highest quality recycled material in terms of processing and properties. However, shortcomings to devulcanization are reduced process safety and odorous chemicals that are required at present.

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SHIBATA, HIROMI. "Recycling and processing of industrial wastes." Shigen-to-Sozai 112, no. 6 (1996): 375–78. http://dx.doi.org/10.2473/shigentosozai.112.375.

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SATO, NOBUAKI. "Material processing and recycling by halogenation." RESOURCES PROCESSING 41, no. 2 (1994): 81–84. http://dx.doi.org/10.4144/rpsj1986.41.81.

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Zaharescu, Traian, Ludmila I. P. Kayan, Marius Eduard Lungulescu, Declerc F. Parra та Ademar B. Lugão. "EPDM recycling assisted by γ-processing". Iranian Polymer Journal 25, № 8 (16 липня 2016): 725–30. http://dx.doi.org/10.1007/s13726-016-0460-6.

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Ertuğ, Burcu. "Processing of Electronic Glass Scrap Recycling." American Chemical Science Journal 4, no. 5 (January 10, 2014): 657–63. http://dx.doi.org/10.9734/acsj/2014/8939.

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Wiśniewska, Paulina, Aleksander Hejna, and Mohammad Reza Saeb. "Recycling and Processing of Waste Materials." Materials 16, no. 2 (January 5, 2023): 508. http://dx.doi.org/10.3390/ma16020508.

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Дисертації з теми "Recycling processing"

Do, Ngoc Thanh Thuy. "Biological treatment and recycling of textile processing effluents." Thesis, De Montfort University, 2004. http://hdl.handle.net/2086/13296.

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In the present work, a mixed culture of Pseudomonas spp. capable of decolourising a range of selected textile dyes was isolated and used to develop a continuous culture system for the treatment of textile dye effluents. The bioprocess was optimised using biomass growth supports. The presence of a carbon source such as soluble wheat starch (0.2 % w/v) in dye solution media and effluent samples enhanced decolourisation. A polymer support (polyurethane foam) was used for immobilisation of "the bacteria in the laboratory-scale bioreactor, and helped create an integrated anaerobic I aerobic condition within the foam matrix and promote degradation of azo dyes and organic compounds. The system showed high levels of decolourisation up to 98 0/0 over 12 days of continuous operation. However, toxicity levels of dye samples increased up to 65 % after anaerobic biotreatment, due to the formation of toxic aromatic amines. The continuous culture bioprocess was also combined with membrane filtration technology to improve effluent treatment. Oecolourised, filtered effluents showed great reduction in COO, BODs and toxicity levels, and were found suitable for re-use in ~yeing processes. Dyed cotton fabrics did not show any significant difference with those dyed using normal supply water. These studies show great potential for improvement of an existing industrial effluent treatment plant through the use of biomass growth supports and the combination of membrane technology. Considerable savings are foreseeable through the implementation of the process, provided effluent recycling within the textile factory is successful.

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Sousa, Sepulveda Azevedo Helena Paula de. "Possibilities for recycling cellulases after use in cotton processing." Thesis, De Montfort University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391992.

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Koermer, Scott Carl. "The Application of Mineral Processing Techniques to the Scrap Recycling Industry." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/63994.

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The scrap metal recycling industry is a growing industry that plays an important role in the sustainability of a large global metal supply. Unfortunately, recycling lacks many standards, and test procedures in place for mineral processing. These standards and practices, if used in recycling, could aid recyclers in determining and achieving optimal separations for their plant.. New regulations for scrap imports into China make it difficult to obtain the metal recoveries that have been achieved in the past. In order to help scrap yards adhere to the new regulations the Eriez RCS eddy current separator system was tested in full scale. The principles this system uses, called circuit analysis, have been used by the mining industry for years, and can be used with any separation system. The Eriez RCS system surpassed the requirements of the Chinese regulations, while simultaneously increasing the recovery of metals. In order to further analyze eddy current separator circuits, tree analysis was attempted for single eddy current separators, as well as more complex circuits mimicked using locked cycle tests. The circuits used in the locked cycle test were a rougher-cleaner, a rougher-scavenger, and a rougher-cleaner-scavenger. It was found that it is possible to use tree analysis to compare different eddy current separator circuits using the same settings, however standards for this practice need to be established for it to be useful. Using the data analysis methods developed for this particular tree analysis, the rougher-cleaner-scavenger test had the best performance overall. This is the same result as the full scale testing done on the Eriez RCS system, but more testing should be conducted to confirm the data analysis techniques of calculating theoretical efficiency, recovery efficiency, and rejection efficiency.
Master of Science

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Reuter, M. A. "The fundamental limits of recycling : from minerals processing to computer aided design of automobiles and other consumer goods /." Link to the online version, 2006. http://hdl.handle.net/10019/1394.

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Mattsson, Josephie. "Technical Analysis of Flax Fiber Reinforced Polypropylene : Prerequisites for Processing and Recycling." Thesis, Karlstads universitet, Fakulteten för teknik- och naturvetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-32352.

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Nowadays, when environmental concerns are becoming increasingly important are there great interest in natural materials and recyclability. The possibility of reusing materials with maintained mechanical properties are essential for sustainability. Today produced approximately 90,000 tons of natural fiber reinforced composites in Europe of those are 40,000 tons compression molded of which the automotive industry uses 95%. Natural fiber reinforced composites is recyclable and therefore interesting in many applications. Also, natural fiber reinforced composites is inexpensive, light in weight and shows decent mechanical properties which makes them attractive to manufactures. However, the problem with natural fiber reinforced composites is the poor adhesion between fiber and matrix, the sensitivity of humidity and their low thermal stability. Those problems could be overcome by addition of compatibilizer and reactive filler. This study will examine the technical requirement in order to develop a sustainable and recyclable biocomposite. It investigates the composition of matrix (polypropylene), fiber (flax), compatibilizer (maleic anhydride grafted polypropylene) and reactive filler (CaO) in order to obtain various combinations of stiffness, strength and processability. The two main methods used for preparing samples were compounding and injection molding. Results shows that 20 wt% flax was the optimal fiber content and that maleic anhydride grafted polypropylene is a very good compatibilizer by enhancing the strength significant. Surprisingly was the strength impaired due to the addition of CaO. The composition of 20 wt% flax, 1 wt% maleic anhydride grafted polypropylene and 79 wt% polypropylene is the technically most favorable composition.

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Pathak, Sandeep Kumar. "Processing, flux pinning and recycling of Y-Ba-Cu-O bulk superconductors." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609209.

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Jin, Kun. "Processing characteristics and properites [sic] of glass fiber reinforced composites from post consumer carpets." Thesis, Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04062004-164643/unrestricted/jin%5Fkun%5F200312%5Fms.pdf.

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Rusendi, Dadi. "Enzymatic hydrolysis of potato processing waste for the production of biopolymers." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55528.

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Biopolymers are polymers produced by certain microorganisms, that are readily degradable in the environment. These biodegradable plastics have the potential to be used as substitutes for conventional petroleum based plastic provided that the production costs can be greatly reduced. The high cost of biopolymer production is due to the cost of substrate which mainly is glucose.
The enzymatic hydrolysis of potato processing wastes was to produce glucose as a least expensive feedstock substrate for the production of biopolymers of polyhydroxybutirate (PHB) from the bacterium Alcaligenes eutrophus was studied. The enzymatic hydrolysis experiments were carried out using $ alpha$-amylase liquefaction enzymes from Aspergillus oryzae and barley-malt, and amyloglucosidase saccharification enzyme from Rhizopus.
The results indicated that the production of glucose from potato starch waste to be used as a substrate to produce biopolymers was both technically and economically feasible. A 10 to 90 ratio of barley-malt to potato starch waste gave the highest conversion of starch to glucose of 194.30 gL$ sp{-1}$ (96.56%), and the lowest liquefaction enzyme cost ($0.054) to hydrolyze one kg of potato starch waste. { it A. eutrophus /} produced PHB of 5.0 gL$ sp-1$ (76.9 % of biomass) using the glucose substrate generated from the potato starch waste.

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Eule, Benjamin [Verfasser]. "Processing of Co-mingled Recyclate Material at UK Material Recycling Facilities (MRF's) / Benjamin Eule." Aachen : Shaker, 2013. http://d-nb.info/1050343115/34.

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Zhang, Shunli. "Recycling and processing of end-of-life electric & electronic equipment : fundamentals and applications /." Doctoral thesis, Luleå tekniska universitet, 1999. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-16902.

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This thesis presents a concept of scrapology of end-of-life electric and electronic equipment (EOL EEE) as a basis on which to develop effective recycling techniques. Various study approaches associated with this concept are detailed in this thesis. In addition, the present work investigates materials separation techniques, in particular eddy current separation (ECS) technology. Based on our research work, a number of novel design alternatives for further developing ECS have been proposed. Major challenges encountered in processing and recycling of EOL EEE are discussed. The main results obtained in this study should be helpful in designing, implementing and improving a recycling system for EOL EEE.
Godkänd; 1999; 20061117 (haneit)

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Книги з теми "Recycling processing"

S, Green John A., ed. Aluminum recycling and processing for energy conservation and sustainability. Materials Park, Ohio: ASM International, 2007.

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Helena Paula de Sousa Sepúlveda Azevedo Azevedo. Possibilities for recycling cellulases after use in cotton processing. Leicester: De Montfort University, 2001.

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A, Keeling A., ed. Practical handbook of processing and recycling of municipal waste. Boca Raton: Lewis Publishers, 1996.

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1943-, Mattsson Berit, and Sonesson Ulf, eds. Environmentally-friendly food processing. Cambridge: Woodhead, 2003.

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1943-, Mattsson Berit, and Sonesson Ulf, eds. Environmentally-friendly food processing. Cambridge: Woodhead, 2003.

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Prevention, Reuse and Recycling New York (N Y. ). Bureau of Waste. Processing and marketing recyclables in New York City: Rethinking economics, historical, and comparative assumptions. New York: Bureau of Waste Prevention, Reuse and Recycling, New York Department of Sanitation, 2004.

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1961-, Mattsson Berit, and Sonesson Ulf 1963-, eds. Environmentally-friendly food processing. Boca Raton, FL: CRC Press, 2003.

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Institution of Mechanical Engineers (Great Britain). Environmental Engineering Group., ed. Waste: Handling, processing, and recycling : papers presented at a seminar. London: Published by Mechanical Engineering Publications Ltd. for the Institution of Mechanical Engineers, 1993.

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Domagala, Josef. Handbook of aluminium recycling: Mechanical preparation, metallurgical processing, heat treatment. 2nd ed. Essen: Vulkan-Verlag, 2014.

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Reddy, Ramana G., Alexandra Anderson, Corby G. Anderson, Camille Fleuriault, Erik D. Spiller, Mark Strauss, Edgar E. Vidal, and Mingming Zhang, eds. New Directions in Mineral Processing, Extractive Metallurgy, Recycling and Waste Minimization. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-22765-3.

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Частини книг з теми "Recycling processing"

Townsend, Timothy G., and Malak Anshassi. "Processing CDD for Recycling." In Construction and Demolition Debris, 219–64. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-25013-2_7.

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Frenay, J., Ch Pagnoulle, R. Jerome, and Ph Ancia. "Recycling of Plastics." In Mineral Processing and the Environment, 295–312. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-017-2284-1_15.

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Bhasney, Siddharth Mohan, Shubhranshu Ranjan Das, Arbind Prasad, Bidyanand Mahto, and Sivasakthivel Thangavel. "Recycling of biopolymers." In Biodegradable Waste Processing for Sustainable Developments, 272–98. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003502012-13.

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Müller, Anette, and Isabel Martins. "Processing of Construction and Demolition Waste." In Recycling of Building Materials, 65–126. Wiesbaden: Springer Fachmedien Wiesbaden, 2022. http://dx.doi.org/10.1007/978-3-658-34609-6_4.

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Tanaka, Toshihiro, and Masanori Suzuki. "Eco-Friendly Materials Recycling Processing." In Progress in Advanced Structural and Functional Materials Design, 119–26. Tokyo: Springer Japan, 2012. http://dx.doi.org/10.1007/978-4-431-54064-9_10.

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Mann, Victor, Vitaliy Pingin, Aleksey Zherdev, Yuriy Bogdanov, Sergey Pavlov, and Vladimir Somov. "SPL Recycling and Re-processing." In Light Metals 2017, 571–78. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51541-0_71.

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Dinwoodie, John M. "Processing and recycling of timber." In Construction Materials, 585–609. Fifth edition. | Boca Raton : CRC Press, [2017]: CRC Press, 2017. http://dx.doi.org/10.1201/9781315164595-52.

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Fourné, Franz. "Waste Processing and Recovery (Recycling)." In Synthetic Fibers, 694–711. München: Carl Hanser Verlag GmbH & Co. KG, 1999. http://dx.doi.org/10.3139/9783446401334.008.

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Fourné, Franz. "Waste Processing and Recovery (Recycling)." In Synthetic Fibers, 694–711. München, Germany: Carl Hanser Verlag GmbH & Co. KG, 1999. http://dx.doi.org/10.1007/978-3-446-40133-4_8.

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Hermann, Ludwig, and Tanja Schaaf. "Outotec Manure, Slurry, and Sludge Processing Technology." In Phosphorus Recovery and Recycling, 403–17. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8031-9_28.

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Тези доповідей конференцій з теми "Recycling processing"

Binti Mohd Fadir, Fatimah Balqis, Hezerul Bin Abdul Karim, and Nour AlDahoul. "TrashBot: Innovative Recycling By Utilizing Object Detection." In 2024 IEEE 8th International Conference on Signal and Image Processing Applications (ICSIPA), 1–6. IEEE, 2024. http://dx.doi.org/10.1109/icsipa62061.2024.10686336.

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Suzuki, Yusei, Masaya Kai, Kazutoshi Sakakibara, Ryo Takano, Takuya Matsumoto, and Masaki Nakamura. "A Stochastic Programming Model of the Recycling Process Considering Uncertainty due to Processing Problems." In 2024 International Technical Conference on Circuits/Systems, Computers, and Communications (ITC-CSCC), 1–6. IEEE, 2024. http://dx.doi.org/10.1109/itc-cscc62988.2024.10628391.

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Schroeder, Jan Walter, Joseph Pawelski, Gary Calnan, Toby Mould, Lee Steinke, Aiden O'Leary, Salar Javid, and Ubaldo Ciminieri. "Recycling and Processing Metals on the Moon: A Framework to Support a Sustainable Lunar Economy." In IAF Space Exploration Symposium, Held at the 75th International Astronautical Congress (IAC 2024), 2030–32. Paris, France: International Astronautical Federation (IAF), 2024. https://doi.org/10.52202/078357-0231.

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Martino, Luca, Victor Elvira, and Gustau Camps-Valls. "Recycling Gibbs sampling." In 2017 25th European Signal Processing Conference (EUSIPCO). IEEE, 2017. http://dx.doi.org/10.23919/eusipco.2017.8081191.

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Шелепина, Н. В. "RECYCLING OF WASTE GRAIN PROCESSING INDUSTRY." In Инновации и «зелёные» технологии : IV Всероссийская научно-практическая конференция. Crossref, 2024. http://dx.doi.org/10.34830/sounb-conf.2023.73.31.042.

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Анотація:

Проанализированы проблемы, связанные с образованием и повторным использованием отходов переработки зерна. Представлены сведения о технологических приемах и методах получения адсорбентов, биотоплива, биологически разлагаемых полимеров из лузги, шелухи, мучки и отрубей. Показано, что повышение эффективности использования отходов переработки зерна и снижение их воздействия на окружающую среду может быть достигнуто путем внедрения концепции экономики замкнутого цикла. The problems associated with the formation and reuse of grain processing waste are analyzed. Information on technological techniques and methods for obtaining adsorbents, biofuels, biodegradable polymers from husks, husks, flour and bran is presented. It is shown that increasing the efficiency of the use of grain processing waste and reducing their impact on the environment can be achieved by introducing the concept of a closed-cycle economy.

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STRAKA, Martin, Peter KAČMÁRY, and Jakub KOVALČÍK. "Possibilities of recycling and processing of catalysts." In CLC 2022. TANGER Ltd., 2022. http://dx.doi.org/10.37904/clc.2022.4560.

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Singh, Sachchida N., Elvio Piccolino, Johan B. Bergenholtz, and Richard C. Smith. "Recycling of RIM Polyurea Elastomers by Thermal Processing." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1991. http://dx.doi.org/10.4271/910582.

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El Dalati, Rouba, Pierre Matar, Emile Youssef, Sylvie Yotte, Farah Homsi, and Saiid Haykal. "Recommendations for Recycling, Processing and Reuse of Concrete." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43401.

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Some countries started to recycle concrete materials for reuse in structural or other issues. Some of them, like Germany, Australia and Canada have established their own recommendation guide for recycling concrete [1,2]. The recycling consists of crushing old concrete into aggregates, and then processing it into new mixture using recycled aggregates with specified sizes [3,4]. The aim of this recycling is to save nature from deforestation and dryness, by reducing the need to gravel and so the quarries work, and also to economize the waste management [5,6]. The present research work consists of an experimental study assessing the impact of using recycled aggregates on the concrete behavior and on the country’s economy. We are especially interested in determining the best composition for the new mixture of concrete resulting from reusing different types of recycled aggregates. Different types of tests have been done depending on the aggregates sizes, their origin and their state (burned or safe). The analysis is based on the comparison between compressive strength, water-cement ratio, slump, porosity and durability. Otherwise, the impact on economy is analyzed, a priori, by studying the effect of reducing the cost of the resulting concrete on construction spending. The resulted recommendations indicate the sizes of aggregates which may constitute the best composition for recycling and processing concrete, and the best use for each type of concrete depending on behavior and economy effect.

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Marttila, Veera, Päivi Kivikytö-Reponen, Juha Lagerbom, and Elina Huttunen-Saarivirta. "Life Cycle Assessment Of Recycled WC-Co Through Zinc Processing." In Euro Powder Metallurgy 2024 Congress & Exhibition. EPMA, 2024. http://dx.doi.org/10.59499/ep246277236.

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Up to date, the environmental benefits of recycling cemented carbides, such as tungsten carbide cobalt (WC-Co), in comparison to their primary production, have been addressed only by a few research groups globally. However, the recycling of key elements, tungsten and cobalt, is crucial for supply security, as they are identified as Critical Raw Materials (CRM) by the European Commission [1]. Primary production of WC-Co, besides relying on scarce raw materials, requires high amounts of chemicals and energy. In this study, we focus on the recycling of WC-Co through zinc processing, for which the environmental impacts have not been reported earlier in the open literature. \n This study presents a life cycle assessment (LCA) for sintered WC-Co cemented carbide “bits” made from recycled WC-Co. The benefit of recycling WC-Co products is illustrated by comparing the LCA results to existing literature based on the primary production and alternative circular route of recycling.

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Polianski, L. I., N. A. Babailov, Yu N. Loginov, and D. N. Pervukhina. "Industrial recycling of technogenic wastes and mineral ore processing." In MECHANICS, RESOURCE AND DIAGNOSTICS OF MATERIALS AND STRUCTURES (MRDMS-2016): Proceedings of the 10th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. Author(s), 2016. http://dx.doi.org/10.1063/1.4967103.

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Звіти організацій з теми "Recycling processing"

Majumdar, D., S. N. Jahshan, C. M. Allison, P. Kuan, and T. R. Thomas. Recycling of nuclear spent fuel with AIROX processing. Office of Scientific and Technical Information (OSTI), December 1992. http://dx.doi.org/10.2172/10146308.

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Li, Xiao, Tianhao Wang, Yelin Ni, Pimphan Meyer, Jose Ramos, and Kevin Simmons. Shear Assisted Processing and Extrusion (ShAPE) of Plastics: Recycling and Remolding. Office of Scientific and Technical Information (OSTI), September 2023. http://dx.doi.org/10.2172/2004584.

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Whalen, Scott, Anthony Reynolds, Devesh Chouhan, Mageshwari Komarasamy, Brandon Taysom, Nicole Overman, Nathan Canfield, and Timothy Roosendaal. Recycling of Titanium Scrap by Shear Assisted Processing and Extrusion (ShAPE). Office of Scientific and Technical Information (OSTI), September 2024. http://dx.doi.org/10.2172/2476698.

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Chen, Wan-Ting (Grace). Chemical Recycling of Mixed Plastics and Valuable Metals in the Electronic Waste Using Solvent-Based Processing. Office of Scientific and Technical Information (OSTI), June 2021. http://dx.doi.org/10.2172/1836787.

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Huber, John Tal, Joshuah Miron, Brent Theurer, Israel Bruckental, and Spencer Swingle. Influence of Ruminal Starch Degradability on Performance of High Producing Dairy Cows. United States Department of Agriculture, January 1994. http://dx.doi.org/10.32747/1994.7568748.bard.

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This research project entitled "Influence of Ruminal Starch Degradability on Performance of High Producing Dairy Cows" had the following objectives: a) Determine effects of feeding varying amounts of ruminally degradable starch (RDS) on efficiency of milk and milk protein production; and 2) Investigate digestive and metabolic mechanisms relating to lactation responses to diets varying in ruminal and total starch degradability. Four lactation studies with high producing cows were conducted in which steam-flaked (~ 75% RDS) was compared with dry-rolled sorghum (~ 50% RDS) grain. All studies demonstrated increased efficiency of conversion of feed to milk (FCM/DMI) and milk protein as amount of RDS in the diet increased by feeding steam-flaked sorghum. As RDS in diets increased, either by increased steam-flaked sorghum, grinding of sorghum, or increasing the proportion of wheat to sorghum, so also did ruminal and total tract digestibilities of starch and neutral-detergent soluble (NDS) carbohydrate. Despite other research by these two groups of workers showing increased non-ammonia N (NAN) flowing from the rumen to the duodenum with higher RDS, only one of the present studies showed such an effect. Post-absorptive studies showed that higher dietary RDS resulted in greater urea recycling, more propionate absorption, a tendency for greater output of glucose by the liver, and increased uptake of alpha-amino nitrogen by the mammary gland. These studies have shown that processing sorghum grain through steam-flaking increases RDS and results in greater yields and efficiency of production of milk and milk protein in high producing dairy cows.

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Avis, William. Drivers, Barriers and Opportunities of E-waste Management in Africa. Institute of Development Studies (IDS), December 2021. http://dx.doi.org/10.19088/k4d.2022.016.

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Population growth, increasing prosperity and changing consumer habits globally are increasing demand for consumer electronics. Further to this, rapid changes in technology, falling prices and consumer appetite for better products have exacerbated e-waste management challenges and seen millions of tons of electronic devices become obsolete. This rapid literature review collates evidence from academic, policy focussed and grey literature on e-waste management in Africa. This report provides an overview of constitutes e-waste, the environmental and health impacts of e-waste, of the barriers to effective e-waste management, the opportunities associated with effective e-waste management and of the limited literature available that estimate future volumes of e-waste. Africa generated a total of 2.9 million Mt of e-waste, or 2.5 kg per capita, the lowest regional rate in the world. Africa’s e-waste is the product of Local and imported Sources of Used Electronic and Electrical Equipment (UEEE). Challenges in e-waste management in Africa are exacerbated by a lack of awareness, environmental legislation and limited financial resources. Proper disposal of e-waste requires training and investment in recycling and management technology as improper processing can have severe environmental and health effects. In Africa, thirteen countries have been identified as having a national e-waste legislation/policy.. The main barriers to effective e-waste management include: Insufficient legislative frameworks and government agencies’ lack of capacity to enforce regulations, Infrastructure, Operating standards and transparency, illegal imports, Security, Data gaps, Trust, Informality and Costs. Aspirations associated with energy transition and net zero are laudable, products associated with these goals can become major contributors to the e-waste challenge. The necessary wind turbines, solar panels, electric car batteries, and other "green" technologies require vast amounts of resources. Further to this, at the end of their lifetime, they can pose environmental hazards. An example of e-waste associated with energy transitions can be gleaned from the solar power sector. Different types of solar power cells need to undergo different treatments (mechanical, thermal, chemical) depending on type to recover the valuable metals contained. Similar issues apply to waste associated with other energy transition technologies. Although e-waste contains toxic and hazardous metals such as barium and mercury among others, it also contains non-ferrous metals such as copper, aluminium and precious metals such as gold and copper, which if recycled could have a value exceeding 55 billion euros. There thus exists an opportunity to convert existing e-waste challenges into an economic opportunity.

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