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Dissertations / Theses on the topic 'Silicon recycling'

Author: Grafiati

Published: 17 September 2022

Last updated: 18 September 2022

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1

Demchikhin, Sergey. "Alternativy likvidace fotovoltaických článků jako potenciální ekologické zátěže." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219643.

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The first part of this master’s thesis contain the history of photovoltaic technology and types of PV cells. Gave a consideration to advantages and disadvantages of solar cells. Compared their effectiveness and important parameters. In the next part described the recycling technology of modules at the end of their lifetime. Described certain recycled materials. At the end of the work described possible improvements to existing technologies used for encapsulating of cell. And wich would improve the recycling process.

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2

Ndzogha, Cyrille. "Etudes des phénomènes d’échange dans la purification du silicium par plasma et induction." Grenoble INPG, 2005. https://theses.hal.science/tel-01340596.

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Ce travail de thèse porte sur un procédé plasma de purification de silicium pour usages photovoltaïque. Il est appliqué à deux types de matériaux : du silicium d’origine métallurgique et des produits de recyclage des boues de sciage des lingots et des plaquettes de la filière photovoltaïque. Les boues de sciage des plaquettes sont essentiellement constituées de liquide de coupe, de particules de SiC (abrasif), de microparticules de silicium et de microparticules de fer provenant du fil de découpe. Le silicium de ces boues est un silicium de haute pureté, qui est déjà de qualité photovoltaïque.

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3

Argonz, Raquel. "Purificação de rejeitos de lascas de quartzo das industrias de silicio." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264918.

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Orientador: Carlos K. Suzuki<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica<br>Made available in DSpace on 2018-07-31T20:22:15Z (GMT). No. of bitstreams: 1 Argonz_Raquel_D.pdf: 6011460 bytes, checksum: 288a8671c5c8ed96310d3c57226ce9c8 (MD5) Previous issue date: 2001<br>Resumo: O Brasil é na atualidade um dos principais produtores de silício para o mundo, sendo que a quantidade de quartzo extraído para a sua produção incluindo o ferro-silício, é da ordem de 2 milhões de toneladas/ano. Para a obtenção do quartzo destinado à redução carbotérmica em sil

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4

Li, Hao. "Functionalized silica nanoparticles for catalysis, nanomedicine and rare earth metal recycling." Doctoral thesis, Universitat Autònoma de Barcelona, 2020. http://hdl.handle.net/10803/670613.

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Durant la darrera dècada, les nanopartícules de sílice han trobat aplicacions en catàlisi, depuració d’aigua, camps biomèdics, agrícoles i industrials ... per les seves característiques físiques i químiques úniques, com ara una gran superfície, una excel·lent biocompatibilitat, una bona estabilitat tèrmica, mecànica i química, mida i forma de porus regulable, riquesa en grups silanol a la superfície que permeten una fàcil modificació superficial. La nostra recerca en aquesta tesi s’ha centrat en la preparació i caracterització de diversos tipus de nanopartícules de sílice funcionalitzades i la

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5

Andersson, Stephanie. "Återvinning av solcellsmoduler i Sverige : En undersökning av de energitekniska, ekonomiska och politiska förutsättningarna." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-53341.

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The solar industry is one of the fastest-growing energy industries in the global market. The reason is a combination of the falling prices of modules and inverters and increased conversion to fossil-free energy production. When a photovoltaic module reaches the end of its life it needs to be replaced and discarded, which can create a sustainability problem depending on how this is managed. Today, less than 10% of the global photovoltaic waste is recycled. Only the European Union has implemented photovoltaic waste regulations in the form of the WEEE Directive, which requires that 85% of the was

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6

Di, Domenica Eleonora. "Recycling of end of life concrete fines (0 - 4 mm) into silica and cement." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8622/.

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The purpose of this work is to find a methodology in order to make possible the recycling of fines (0 - 4 mm) in the Construction and Demolition Waste (CDW) process. At the moment this fraction is a not desired by-product: it has high contaminant content, it has to be separated from the coarse fraction, because of its high water absorption which can affect the properties of the concrete. In fact, in some countries the use of fines recycled aggregates is highly restricted or even banned. This work is placed inside the European project C2CA (from Concrete to Cement and Clean Aggregates) and it

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SILVA, ANTONIO C. da. "Vidros e vitroceramicos com alta concentracao de metais obtidos a partir de residuos industriais." reponame:Repositório Institucional do IPEN, 2008. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11765.

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Made available in DSpace on 2014-10-09T12:55:33Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:05:06Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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8

Nguyen, Joseph Vu. "Design, synthesis, and optimization of recoverable and recyclable silica-immobilized atom transfer radical polymerization catalystal." Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-03072005-105351/unrestricted/nguyen%5Fjoseph%5Fv%5F200505%5Fphd.pdf.

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Thesis (Ph. D.)--Chemical and Biomolecular Engineering, Georgia Institute of Technology, 2005.<br>Jones, Christopher, Committee Chair ; Eckert, Charles, Committee Member ; Schork, Joseph, Committee Member ; Weck, Marcus, Committee Member ; Zhang, John, Committee Member. Includes bibliographical references.

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9

Santos, Maria de Lourdes dos. "Reutilização de resíduo SiO2 como potencial na confecção de massa refratária de sílica." Universidade do Estado de Santa Catarina, 2013. http://tede.udesc.br/handle/handle/1642.

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Made available in DSpace on 2016-12-08T17:19:20Z (GMT). No. of bitstreams: 1 resumo.pdf: 33365 bytes, checksum: c0d79b06b712dd7d33a99ff2c405578a (MD5) Previous issue date: 2013-02-26<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The silica refractory is nowadays one of the most used linings in the world due to its excellent cost/benefit ratio. The silica sand is available in abundance in the market for use as a raw material for production of ordinary applications refractories, and this does not encourage the search for new usages of its wastes. However, in some industrial

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Nguyen, Joseph Vu. "Design, synthesis, and optimization of recoverable and recyclable silica-immobilized atom transfer radical polymerization catalysts." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6860.

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Despite the growing interest in heterogeneous polymerization catalysis, the majority of the polymerization catalysts used industrially are single-use entities that are left in the polymer product. Recoverable and recyclable polymerization catalysts have not reached the industrial utility of single-use catalysts because the catalyst and product separation have not become economical. The successful development of recyclable transition metal polymerization catalysts must take a rational design approach, hence academic and industrial researchers need to further expand the fundamental science and

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MARIALVA, NETO ANTONIO A. "Incorporacao de residuos solidos galvanicos em matrizes vitreas." reponame:Repositório Institucional do IPEN, 2003. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11128.

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Made available in DSpace on 2014-10-09T12:48:41Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:57:51Z (GMT). No. of bitstreams: 1 09243.pdf: 4447500 bytes, checksum: 56bd93824762b36bf0679726866107aa (MD5)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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12

Fernandes, Glauber Jos? Turolla. "Reciclagem qu?mica de Polietileno utilizando S?lica Mesoporosa tipo SBA-15 avalizada por Termogravimetriae Espectrometria de Massas." Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17787.

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Made available in DSpace on 2014-12-17T15:42:28Z (GMT). No. of bitstreams: 1 GlauberJTF_TESE.pdf: 2011053 bytes, checksum: d21e71a60d82e3bce89064ab78884cef (MD5) Previous issue date: 2010-03-31<br>The chemical recycling of polyolefins has been the focus of increasing attention owing potential application as a fuel and as source chemicals. The use of plastic waste contributes to the solution of pollution problems.The use of catalysts can enhance the thermal degradation of synthetic polymers, which may be avaliated by Themogravimetry (TG) and mass spectrometry (MS) combined techniques. This wo

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13

Rebreanu, Laura. "Study of the Si biogeochemical cycle in the sediments of the Scheldt continuum, Belgium/The Netherlands." Doctoral thesis, Universite Libre de Bruxelles, 2009. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210273.

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Le but général de ce travail fut de quantifier la silice biogène (BSiO2) dans les sédiments du continuum de l'Escaut (estuaire – zone côtière), ainsi que son taux de recyclage - rétention. Le coefficient de diffusion moléculaire de la DSi a été déterminé pour différentes valeurs de température et deux salinités et une relation empirique reliant le coefficient de diffusion à la température et à la viscosité de la solution a été établie. La distribution longitudinale de la BSiO2 dans les sédiments de surface, ainsi que les profils verticaux de BSiO2 et de silice dissoute ont été déterminés duran

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14

Skriňáková, Eva. "Optimalizace složení betonů s využitím plniv z recyklovaných betonů." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240222.

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Concrete as a building material is subject to continuous innovation and thanks to advanced technology and quantum of research, its properties are still improved. It is logical that the more concrete we produce, the more waste it arises. The volume of this waste can not be stored in landfills endlessly, nowadays most of the waste economies in the world are trying to recycle concrete rubble. The recycling is not such a problem, the technology has been long verified but the quality of the recycled concrete aggregate is unquestionably one of the primary assumption which leads to accomplish require

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15

Wu, Yen-Hui, and 吳彥翬. "Recycling of Copper Containing Scrap Silicon Wafer." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/93892093390269007631.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>96<br>In this study, a hydrometallurgical method is adopted to recover the valuable resources of silicon and copper (Cu) from copper containing scrap silicon wafer. The collected scrap wafer contains 0.52% Cu and has a density of 2.395 g/cm3, water content of 0.103％ and ash content of 100.2％.This study reveals that an optimum leaching condition of 1N H2SO4, 200 times H2O2, 700C, 20g/50ml and 4 hours can obtain a Cu leaching recovery of 98.6%. The Cu contained in this leaching solution can either be 100% crystallized as a marketable CuSO4．5H2O by heating at 700C for t

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16

Wen, Fu-Lin, and 溫福麟. "Metal removal for recycling of silicon sawing waste." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/2f6u33.

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碩士<br>國立臺北科技大學<br>資源工程研究所<br>100<br>Silicon ingot cut wafer produce abundant silicon sawing waste during the sawing process. If it can be recycled, it can reach the purpose of environmental protection and the reduction of cost. In order to promote the post application value of silicon and silicon carbide, the removal of metal impurities is essential when recycling silicon sawing waste. The experimental results show that silicon and silicon carbide can be separated by using centrifugation. When recycling of silicon sawing waste was performed by using the centrifugation in a magnetic field, the

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17

Lizardo, Elias Suazo, and 利薩爾. "Economic feasibility for recycling crystalline silicon photovoltaics modules." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/2xqp2a.

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碩士<br>國立中央大學<br>國際永續發展碩士在職專班<br>106<br>The goal of this thesis is to assess the economic feasibility of a recycling facility for crystalline silicon based PV modules. Two cases are described in this study, the first one is the building up and operating a recycling facility located in the north region of Italy and the second one is located in the north region of Honduras. This thesis utilizes an economic model called the discounted cash flows in order to assess the economic feasibility of the recycling facilities. A sensitivity analysis was applied in order to identify the range of parameters v

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18

Zhou, Song Hou, and 周嵩皓. "To Study the Recycling Processes of Silicon Dioxide Crucible." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/53103468816542696458.

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碩士<br>大葉大學<br>機械與自動化工程學系<br>98<br>The goal of this research is to study the recycling processes for the amorphous type wasted silicon dioxide crucible, which exist high purity. If we can retrieve this high purity wasted crucible with simple processing, it should have many other uses in industries. First, smash the silicon dioxide crucible and pickling it. Followed with the hydrothermal treated to grow the α-quartz crystal. We found that larger amount of sodium element will containment the quartz crystal during the treatment. Therefore, adequate purification processes will be needed to remove t

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19

Shih, Yu-Pei, and 施郁霈. "Recycling and Analytical Technologies of Silicon Sawing Waste and the Recovered Silicon for Low-Cost Applications." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/j3ut8h.

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博士<br>國立臺北科技大學<br>工程學院工程科技博士班<br>105<br>In a country producing silicon wafer, an important policy of waste reduction is to recycle the resource from silicon ingot sawing waste. In addition to metals impurities, a large amount of reusable Si, SiC and glycol solution are found in the sawing waste. Effective recycling of silicon sawing waste and innovative applications must improve the circular economic value of the wafer manufacturing system. First of all, this study adopted gravity settling or centrifugation to recover glycol solution and analyzed the feasibility of recycling technologies. The

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20

Kuo, Shen-Wei, and 郭勝惟. "Study on physical recycling mechanism of waste cutting oil from solar silicon slice production." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/a732e6.

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碩士<br>國立交通大學<br>工學院永續環境科技學程<br>101<br>This study evaluate the physical recycle mechanism of waste cutting oil . The waste cutting oil is composed of DEG as the base chemical, the results show that filter-press (build-in 1 ml filter cloth) and horizontal decanter (interval rotating speed of 1,400 rpm) are good pre-working machines. After liquid has been pre-heated up to 70℃, the viscosity can be reduced. And ultra-filter device with mud-guide system for final recovery treatment is feasible. The clean recycled oil after proper treatment contained near 0% of solid content. The GC-Mass spectrum an

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21

Tsui, Fu-Chieh, and 崔芙潔. "A study on recycling silicon carbide powders as a sintering substrate from wire-saw slurry." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/yx5wh4.

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碩士<br>國立屏東科技大學<br>材料工程研究所<br>105<br>In this study, we effectively reused recycling SiC powders which are came from cutting waste oil in the electronics industry. The main purpose is to make recycling SiC powders as high temperature substrates. Waste oil mainly contains silicon mud which includes the silicon carbide, silicon and silicon oxide. If silicon mud can be reused effectively, the treatment cost should be decreased, and environment impacting should be also reduced. High temperature sintering substrate is made by recycling SiC powders, then coating a layer of yttrium stabilized zirconia

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22

Wang, Teng-Yu, and 王珽玉. "Recycling of solar grade silicon from kerf-loss slurry and multi-crystalline growth for photovoltaic application." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/60028030989826388941.

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博士<br>國立臺灣大學<br>化學工程學研究所<br>96<br>Solar photovoltaic (PV) energy will shortly be in great demand, since it is inexhaustible and cleaner than any conventional energy resources. The global PV production was over 2.6 GW in 2006 alone, out of which, the majority was the silicon wafer-based solar cells. Because the fast growing PV market is mainly based on crystalline silicon, the lack of silicon raw materials in recent years is becoming a critical issue. The exponential growth of the solar cell industry has driven up the price of silicon several times and the shortage of silicon has been a serious

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23

Adams, Matthew P. "Alkali-silica reaction in concrete containing recycled concrete aggregates." Thesis, 2012. http://hdl.handle.net/1957/27864.

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Using recycled concrete aggregate (RCA) as a replacement for natural aggregate in new concrete is a promising way to increase the overall sustainability of new concrete. This has been hindered, however, by a general perception that RCA is a sub-standard material due to the lack of technical guidance, specifically related to long-term durability, on incorporating RCA into new concrete. The goal of this research project was to determine whether current testing methods could be used to assess the potential alkali-silica reactivity of concrete incorporating RCA. The test methods investigated were

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24

Brunner, Pierre-Louis Marc. "Dispositifs optoélectroniques à base de semi-conducteurs organiques en couches minces." Thèse, 2015. http://hdl.handle.net/1866/16002.

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