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Dissertations / Theses on the topic 'Resource recovery'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Seres, Sandu. "Resource recovery from MSW fly ash : Resource recovery from MSW fly ash." Thesis, Umeå universitet, Kemiska institutionen, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-154377.

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2

Thoren, Ryan. "Optimizing resource recovery in Vancouver." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/32405.

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Vancouver’s expanding population is putting pressure on the city’s water and wastewater infrastructure; more efficient uses of this resource need to be explored as the cost of upgrading the city’s water and sewer network is daunting. Wastewater presents a significant source of water and heat and, if properly exploited, can reduce pressure on existing infrastructure while reducing stress on the receiving environment. This thesis presents a model with three scenarios that seek to quantify and optimize the amount of water that can be cascaded within the Vancouver Sewerage Area, as well as evaluat

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3

Milliken, David Gayley. "Recycle : resource recovery in Belmont Massachusetts." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/68719.

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Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 1990.<br>Includes bibliographical references (leaves 46-47).<br>A potential threat to the earth's ecosystem and the people and animals living here is improper disposal of trash. The average American throws away 3.5 pounds of trash daily. While we have focused our concerns on the arms race and other looming and important issues, the day to day levels of trash coming from our homes and industries continues to grow. In many areas of the country landfills are closing and communities are struggling for solutions. : The

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4

Black, Linda. "Resource recovery development: factors affecting decisions." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/91108.

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Municipalities are increasingly facing solid waste disposal problems due to lack of sanitary landfill sites, high costs of landfill management and increasingly stringent environmental standards. Consequently, they are turning toward innovative disposal practices to alleviate these problems. However, very little comprehensive information is available to decision makers on the range of options available in resource recovery development and the factors that can influence choices. This thesis tests the hypothesis that there are a definable set of factors or circumstances that have led resource r

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5

Samuelsson, Oscar. "Fault detection in water resource recovery facilities." Licentiate thesis, Uppsala universitet, Avdelningen för systemteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-329777.

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Reliable sensor values are important for resource-efficient control and operations of wastewater treatment processes. Automatic fault detection methods are necessary to monitor the increasing amount of data produced in any modern water resource recovery facility (WRRF). Most on-line measurements exhibit large variations under normal conditions, due to considerable variations in the influent flow. The work reported in this licentiate thesis deals with fault detection in WRRFs. In the first paper, we studied how Gaussian process regression (GPR), a probabilistic machine learning method, could be

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6

Carbonell, Chacón Sergi. "Microalgae cultivation in view of resource and energy recovery." Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/669859.

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El rabdomiosarcoma (RMS) és el sarcoma de parts toves més comú en la infància i el seu origen rau en les cèl·lules embrionàries precursores del múscul esquelètic. Histològicament se subdivideix en dos tipus: l'embrionari (RMSe) i l'alveolar (RMSa), diferint en presentació clínica, pronòstic i resposta a la teràpia, i és el RMSa el que presenta pitjor pronòstic. El neuroblastoma (NBL) és el tumor sòlid extracranial més habitual en la infància i el tercer càncer pediàtric més recurrent. Representa un 15% de les morts pediàtriques per càncer. Hi ha diversos factors que determinen l'afectació del

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7

Hagelqvist, Alina. "Forest industry sludge as a resource for energy recovery." Licentiate thesis, Karlstad University, Faculty of Technology and Science, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-3872.

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<p>Forest industries produce large amounts of carbon rich sludges as by-products in their processes. Presently sludge is treated as a poor quality biofuel for co-incineration, some mills treat it solely as a disposal problem. This thesis provides an introduction to production, composition and disposal issues of sludge. It also includes a presentation of strategies for sludge handling.</p><p>The main concern with energy recovery from sludge is connected to high content of water (50-80%). Mechanical dewatering is an energy efficient method of decreasing the water content. However, there are limi

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8

Luscinskas, Belinda Louie. "Development of resource recovery facilities, private versus public ownership." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/68233.

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9

Moline, Julia N. (Julia Nessa). "Data-driven resource allocation decisions : FEMA's disaster recovery centers." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/90058.

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Thesis: S.M. in Technology and Policy, Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 100-102).<br>Resource allocation decisions in post-disaster operations are challenging because of situational dynamics, insufficient information, organizational culture, political context, and urgency. We propose a methodology to create a data-driven decision process for post-disaster resource allocation that enables timely, transparent and consistent decision-makin

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10

Lowe, Douglas Edwin. "Feasibility study to build a de-inking plant in northern Virginia." Master's thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-03172010-020109/.

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11

Qin, Mohan. "Resource Recovery By Osmotic Bioelectrochemical Systems Towards Sustainable Wastewater Treatment." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/80391.

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Recovering valuable resources from wastewater will transform wastewater management from a treatment focused to sustainability focused strategy, and creates the need for new technology development. An innovative treatment concept - osmotic bioelectrochemical system (OsBES), which is based on cooperation between bioelectrochemical systems (BES) and forward osmosis (FO), has been introduced and studied in the past few years. An OsBES can accomplish simultaneous treatment of wastewater and recovery of resources such as nutrient, energy, and water (NEW). The cooperation can be accomplished in eithe

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12

Iskander, Syeed Md. "Advanced Technologies for Resource Recovery and Contaminants Removal from Landfill Leachate." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/89218.

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Landfill leachate contains valuable, recoverable organics, water, and nutrients. This project investigated leachate treatment and resource recovery from landfill leachates by innovative methods such as forward osmosis (FO), bioelectrochemical systems (BES), and advanced oxidation. In this study, a microbial fuel cell (MFC) removed 50-75% of the ammonia from a leachate through the electricity driven movement of ammonium to the cathode chamber followed by air stripping at high pH (> 9). During this process, the MFC system removed 53-64% of the COD, producing a net energy of 0.123 kWh m-3. Simila

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13

Kuczka, Allan Anthony. "Conceptual design analysis of a collection and processing system for scrapped catalytic converters." Master's thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-01202010-020249/.

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14

Chan, Pacheco Carlos Roberto. "Integrating enhanced biological phosphorus removal (EBPR) in a resource recovery scenario." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/666850.

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La presente tesis doctoral se enfoca en evaluar un sistema de eliminación biológica de fósforo (enhanced biological phosphorus removal, EBPR) orientado a un escenario de recuperación de recursos. Los resultados obtenidos se dividieron en cuatro capítulos, los cuales aparecen en los capítulos 4, 5, 6 y 7. Los temas estudiados en cada capítulo se resumen a continuación: Capítulo 4. Se estudió a largo plazo un sistema SBR-EBPR cuya configuración fue modificada con la finalidad de obtener un líquido altamente enriquecido con P. La configuración del sistema SBR-EBPR consistió en incluir una etapa

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Athanassiades, Eliana. "Waste tyre pyrolysis : sustainable recovery and reuse of a valuable resource." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/18017.

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End-of-life car passenger tyres represent a major waste management problem, with more than 450,000 tonnes of used tyres being generated each year in the UK alone (approximately 55,000,000 tyres). Recent legislation has made 100% material or value recovery from waste tyres an imperative. There are many different waste tyre management options available. The most commonly used processes include: retreading, use as fuel in incinerators and cement kilns and reprocessing to produce rubber crumb which has further applications in asphalt mixtures, carpet underlay and playgrounds. The theme of the rese

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Evans, Alexandra E. V. "Institutional arrangements for resource recovery and reuse in the wastewater sector." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/23427.

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As populations grow and urban centres expand, meeting water demand and wastewater management requirements will become increasingly difficult. Goal 6 of the Sustainable Development Goals is to: 'Ensure availability and sustainable management of water and sanitation for all'. Part of the approach to achieving this will be reusing wastewater and will require a greater understanding of the institutional arrangements that support or obstruct reuse. This research was designed to achieve this and aimed to develop a set of factors that investors could use to assess the institutional feasibility of reu

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17

Rezaei, Nader. "A Decision-making Framework for Hybrid Resource Recovery Oriented Wastewater Systems." Scholar Commons, 2019. https://scholarcommons.usf.edu/etd/7907.

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Water shortage, water contamination, and the emerging challenges in sustainable water resources management (e.g., the likely impacts of climate change and population growth) necessitate adopting a reverse logistics approach, which is the process of moving wastewater from its typical final destination back to the water supply chain for reuse purposes. This practice not only reduces the negative impacts of wastewater on the environment, but also provides an alternative to withdrawal from natural water resources, forming a closed-loop water supply chain. However, the design of such a supply chain

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18

Marra, Alessandra. "Innovative treatments for resource recovery from waste electrical and electronic equipment." Doctoral thesis, Universita degli studi di Salerno, 2017. http://hdl.handle.net/10556/2619.

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2015 - 2016<br>The ever-expanding population, the increasing consumption of resources and the shortage of primary raw materials have addressed the transition of waste management strategies from the linear model based on the “wear and tear” on a circular approach aiming at preventing waste and recycling materials. In this view, the attention has been focused on the use of anthropogenic stock resources in place of virgin materials as promoted by the concept of “urban mining”. Waste electrical and electronic equipment (WEEE) is regarded as the backbone stream in urban mining. It represents the wa

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19

Martin, Lealon LeCorte. "Global optimization of chemical process networks for resource recovery and power generation." online access from Digital Dissertation Consortium access full-text, 2002. http://libweb.cityu.edu.hk/cgi-bin/er/db/ddcdiss.pl?3058495.

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20

Nagabooshnam, Jayesh kumar. "Solid Waste Generation & Composition in Gaborone, Botswana. Potential for Resource Recovery." Thesis, Linköpings universitet, Industriell miljöteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-74626.

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An analysis of solid waste management was performed in Gaborone, Botswana to identify the quantity of different types of solid waste that are generated annually and the possible strategies for improved waste management. In order to achieve the objective of the project, present waste management practice in Gaborone was analysed and waste composition study was carried out in Gamodubu landfill, Gaborone. Waste from household, commercial, industrial and others (defence and institutional) stratums were selected for sampling. Different samples were taken and forwarded to sorting analysis. The waste

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21

Ddiba, Daniel Isaac Waya. "Estimating the potential for resource recovery from productive sanitation in urban areas." Thesis, KTH, Mark- och vattenteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-190740.

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To-date, sanitation has mainly been approached from a public and environmental health perspective and this implies that excreta and other organic waste streams are seen not only as a hazard to quickly get rid of but also as a very costly menace to manage. However, looking at sanitation management from a resource recovery perspective provides an avenue for solutions with multiple co-benefits. Revenues from sanitation end-use products can act as an incentive for improving sanitation infrastructure while also covering part or all of the investment and operation costs for the same. Until now, esti

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22

Madapura, Eregowda Tejaswini Gowda. "Anaerobic treatment and resource recovery from methanol rich waste gases and wastewaters." Thesis, Paris Est, 2019. http://www.theses.fr/2019PESC2012.

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Le méthanol est un composé organique volatil (COV) important, présent dans les effluents gazeux et liquides des industries de transformation telles que les pâtes à papier et papiers, la fabrication de peinture et les raffineries de pétrole. Aux États-Unis seulement, environ 55 377 tonnes de méthanol ont été émises dans l'atmosphère en 2017 et au moins 65% du total des émissions provenaient des usines Kraft des industries de la pâte à papier et du papier. Le traitement biologique anaérobie des effluents gazeux et liquides riches en méthanol a été testé dans des configurations de bioréacteurs, t

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23

Nair, Divya Sreelatha. "Recycling Aquacultural Waste through Horticultural Greenhouse Production as a Resource Recovery Approach." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/31302.

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<p>For intensive production systems like the Blue Ridge Aquaculture (BRA), based in Martinsville, VA, there are significant economic incentives to reuse the waste by diverting it into a cropping system that would increase the total productivity and total resource-reuse efficiency, and decrease the environmental, ecological, and financial costs of aquacultural waste disposal. In order to facilitate the reuse of effluent from the tilapia production at the BRA, a green house was developed. On this site, sludge waste from recirculating aquaculture was separated and composted using a vermicompostin

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Chipako, Tinashe. "Investigating the feasibility and logistics of decentralized urine treatment for resource recovery." Master's thesis, Faculty of Engineering and the Built Environment, 2019. http://hdl.handle.net/11427/31455.

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Background Phosphorous levels around the world are decreasing rapidly, as urbanization increases. This is significant as phosphorus is a resource that is required by all living organisms and is a key ingredient in many fertilizers. Similar to the peak oil phenomenon, phosphorus will soon experience a peak in its production, and it is predicted that within the next century, naturally occurring phosphorous will be completely depleted. Moreover, methods of nitrogen production such as the Haber‐Bosch process contribute largely towards global energy expenditure and greenhouse

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25

Juan, García Pau. "Resilience of water resource recovery facilities: a framework for quantitative model-based assessment." Doctoral thesis, Universitat de Girona, 2019. http://hdl.handle.net/10803/667738.

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The water sector is entering a period of uncertainty, as stressors such as climate change pose unknown risks to its infrastructure. Utilities need to build resilience to handle unpredictable changes, but the field of resilience in water management is still at its infancy. This thesis will first examine the state of the art of resilience implementation in water resource recovery facilities (WRRF) and identify challenges to its implementation. Secondly, a framework to measure resilience using modelling techniques is proposed. Thirdly, a WRRF model is calibrated and validated at full scale using

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Shang, Kun. "GRACE Time-Variable Gravity Field Recovery Using an Improved Energy Balance Formalism." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437393586.

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27

FOGLIA, ALESSIA. "From anaerobic membrane bioreactors to water resource recovery facility: experimental validation and sustainability assessment." Doctoral thesis, Università Politecnica delle Marche, 2022. http://hdl.handle.net/11566/295203.

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La transizione dal concetto di ‘’impianto di trattamento delle acque reflue’’ a quello di ‘’impianto di recupero di risorse dalle acque reflue a bassa impronta di carbonio’’ è stata indirizzata affrontando i seguenti temi: il riutilizzo dell'acqua depurata, il recupero di risorse e la valutazione dell'impronta di carbonio. In particolare, per quanto riguarda il riutilizzo dell'acqua depurata sono stati analizzati e confrontati trattamenti convenzionali di affinamento del refluo e soluzioni innovative che prevedono trattamenti anaerobici a membrana. In questo contesto, è stata operata per circ

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BORZOOEI, SINA. "Model-based optimization and scenario planning for a large-scale water resource recovery facility." Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2708023.

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Several configurations of biological nutrient-removal(BNR) systems have been developed to improve nutrient removal and meet recently established stringent effluent permits for wastewater treatment plants (WWTPs). Since the majority of BNR configurations are modified versions of the conventional activated sludge process (ASP), they are simple to be implemented and cost-effective. Thus, BNR methods have gained great popularity. However, complex, nonlinear and dynamic nature of biological and biochemical processes which takes place in these systems, makes controlling their performance a challengi

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Jain, Akshay. "Feasibility of using Waste Heat as a power source to operate Microbial Electrolysis Cells towards Resource Recovery." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/97977.

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Wastewater treatment has developed as a mature technology over time. However, conventional wastewater treatment is a very energy-intensive process. Bioelectrochemical system (BES) is an emerging technology that can treat wastewater and also recover resources such as energy in the form of electricity/hydrogen gas and nutrients such as nitrogen and phosphorus compounds. Microbial electrolysis cell (MEC) is a type of BES that, in the presence of an additional voltage, can treat wastewater and generate hydrogen gas. This is a promising approach for wastewater treatment and value-added product gene

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Mallory, Adrian. "Designing sustainable faecal sludge treatment systems for small cities in Sub-Saharan Africa." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/33039.

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More than 80 per cent of wastewater from human activities is discharged into the rivers or sea without any pollution removal, and the Sustainable Development Goals (SDGs) aim to halve this proportion and increase recycling and reuse globally by 2030. Treatment plants in Sub-Saharan Africa often fail due to lack of operating funds, poor regulation and poor design that does not take into account human factors. The failure of treatment plants can also be put down partly to the funding structures for management, which are often dependent on the disposal tariffs charged. Without sufficient regulati

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31

Basset, Olivé Núria. "A contribution to resource recovery from wastewater. Anaerobic processes for organic matter and nitrogen treatment." Doctoral thesis, Universitat de Barcelona, 2015. http://hdl.handle.net/10803/346348.

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Organic matter and nutrients present in urban and industrial wastewater should be removed or valorised to reduce its impact on the environment. Conventional wastewater treatments are focused on the removal of these pollution sources at the minimum cost. The idea of resource recovery from wastewater is changing the concept of the conventional wastewater treatment plants that tend to incorporate little by little processes as anaerobic digestion, MBR, biofilm, granulation, etc. However, their application to obtain reusable by-products from wastes should be cost effective. Winery wastewater is an

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Zou, Shiqiang. "Advancing Forward Osmosis for Energy-efficient Wastewater Treatment towards Enhanced Water Reuse and Resource Recovery." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/89650.

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Current treatment of wastewater can effectively remove the contaminants; however, the effluent is still not widely reused because of some undesired substances like pathogens and trace organic chemicals. To promote water reuse, membrane-based technologies have emerged as a robust and more efficient alternative to current treatment practice. Among these membrane processes, forward osmosis (FO) utilizes an osmotic pressure gradient across a semi-permeable membrane to reclaim high-quality water. Still, several key challenges remain to be addressed towards broader FO application, including energy-i

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Meng-Chian, Li, and 李孟謙. "Resource Recovery of Tin Sludge." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/93857026539955151620.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>98<br>A technology development for the recycling of tin sludge waste into a product of tin (II) chloride was implemented in this study. The main tasks of this study include: study on HNO3 leaching, study on HCl leaching, study on the pH adjustment method, study on the crystallization method and purity analysis of tin (II) chloride. The results of this study reveal that 100% Pb and 93.88% Zn contained in the tin sludge waste can be removed by using HNO3 leaching method to obtain a high purity of SnO2. 94.76% of this obtained SnO2 can be dissolved by using HCl leaching

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Chang-Ching, Chien, and 簡長清. "Resource recovery of copper sludge." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/48673405901134928634.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>95<br>The copper sludge may serious pollute the environment, if it is not properly disposed of. In order to recover the copper from copper sludge, a series of tests of leaching, crystallization and replacement are conducted in this study. The results of this study reveal that the copper sludge can be 100% dissolved into a leaching solution by adding 36N sulfuric acid and deionized water. After first crystallization, a high purity of CuSO4 crystal can be obtained from this leaching solution. The remaining crystallization solution which contains 6.28％ of copper is sent

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Conceição, Ricardo Jorge Henriques da. "Resource recovery from used water." Master's thesis, 2015. http://hdl.handle.net/10362/37032.

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Single cell protein (SCP) defines the dried cells of microorganisms that can be used as a protein supplement both in animal feed or human food. SCP could represent an effective alterna-tive to meet the high and growing demand of feed products. This work aimed to develop a simple and economically feasible process to obtain SCP by adding value to an industrial waste stream. Spent sulfite liquor (SSL), pure glycerol and crude glycerol and two different types of wood oils were selected. However, the wood oils were early discharged (after characterization) as possible substrates due to their low c

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Fan-Yuan, Chang, and 昌凡淵. "Resource Recovery of Gallium Containing Dust." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/11696934887935487899.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>102<br>The purpose of this study was to recover Indium and Gallium metals from Gallium containing dust, collected during the process of manufacturing light-emitting diodes. This research was conducted and major processes involved: collection of Gallium-containing dust, composition analysis, immersion corrosion, pH adjustment, precipitation, crystallization and replacement methods. Results from this study show that the flue dust contained 4.04wt% Gallium and 60.61wt% Indium. XRD analysis of the flue dust showed that Gallium was in the form of Gallium Nitride (GaN) and

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洪崇欽. "Resource Recovery of Scrap Gallium Arsenide." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/04003184017755003860.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>91<br>As the gallium arsenide (GaAs) production continues to increase, the amount of scrap GaAs generated each year is also noticeable. Due to the hazardous material of As and valuable resource of Ga contained in the scrap GaAs, the discarded GaAs will present hazardous effects to the environments if they are not treated properly. The main objective of this study is to adopt hydrometallurgial methods to recover the valuable metal of Ga from GaAs and to disposal its hazardous material of arsenic properly. In this study, several methods of leaching, solvent

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Chen, Ming-Jay, and 陳明傑. "Resource recovery of scrap lithium battery." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/25150796919641617825.

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碩士<br>大葉大學<br>環境工程研究所<br>90<br>Scrap lithium batteries contains various metals of lithium (Li), cobalt (Co), aluminum (Al) and nickel (Ni). These metals may seriously pollute the environment, if they are not properly disposal. In order to minimize the pollution problems and to conserve the limited natural resources, a hydrometallurgical procedure is developed in this study to recover these valuable metals (i.e., Li and Co) contained in the scrap lithium batteries. In this study, several methods of electricity discharge, leaching, solvent extraction, cementation, precipitation and el

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Yeh, Hsin-Yi, and 葉信益. "Resource Recovery of Scrap Nd Magnet." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/57630571426626001736.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>101<br>This study focuses on the recycling of neodymium metal from waste neodymium containing magnet. Methods adopted include: grinding and screening, component analysis, surface coating, leaching, pH adjustment, electrolysis and replacement method to determine the optimal recovery technology. Analysis revealed neodymium content of 192,649 mg/kg, 0.06% water content, 86.00% ash content, 14.06% combustible material and specific gravity 5.25. Optimum leaching conditions were determined to be 3N sulfuric acid with a solid-liquid of 3g/50ml at 70°C for 5 minutes which le

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Chen, Huang-Chi, and 陳皇吉. "Resource Recovery of Scrap Sapphire Wafer." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/22283391353254785342.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>102<br>The purpose of this study was to recover Gallium (Ga) metal from scrap sapphire wafer, collected during the manufacturing process of light-emitting diodes. The major processes involved in this research are collection of scrap sapphire wafer, composition analysis, grinding and screening, leaching, precipitation, replacement, electrolysis and crystallization. The result of this study reveals that the Ga, water, ash, combustible content and specific gravity of the collected scrap sapphire wafer was 6426.67 mg/kg, 0.22%, 99.98%, 0% and 4.1549 respectively. An opti

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Wang, Tzu-Chien, and 王子謙. "Resource Recovery of Platinum Containing Waste." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/8972p6.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>101<br>The main purpose of this study is to recycle platinum from platinum containing waste. The methods adopted in this study include: collection of platinum containing waste and composition analysis, grinding and screening, impregnated dissolution, reduction, precipitation, replacement, product component analysis and determination of the optimum platinum recovery solution. The collected platinum containing waste comprised 0.979% platinum and has a density of 7.67. In this study an investigation was conducted to determine the optimum conditions for the best impreg

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CHEN, YU-RU, and 陳昱儒. "Resource Recovery of the Gallium Containing Waste." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/30785393561366931865.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>104<br>The purpose of this study was to recover gallium metal resources for the recycling of gallium-containing wastes obtained from the light-emitting diode manufacturing process. The methods investigated for gallium recovery were: pH adjustment, replacement, electrolysis, crystallization and ion exchange. Research results indicated the gallium metal content in the waste was 10403 mg/kg, while the moisture, ash and combustible contents were 0.66%, 99.5%, 0.05% respectively, and the specific gravity was 2.37. The optimum leaching conditions for gallium recovery fro

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Yang, Yu-Hao, and 楊育豪. "Resource Recovery of Scrap Digital Video Disc." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/44043015503044001205.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>93<br>The main purpose of this research is to recover the Polycarbonate (PC) plastic and silver from scrap digital video disk (DVD). The upper and lower PC plastics which composed of the DVD are manually separated. The removal efficiencies of surface coating layers (i.e., acrylic glue, protecting glue, silver, memory dye and advertisement ink) of these separated PC plastics by various leaching solution are investigated in this research. The recovery of silver which contained in the final leaching solution by replacement, electrical wining and precipitation methods is

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Lin, I.-Feng, and 林宜鋒. "Resource Recovery and Utilization of Waste Fixers." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/90440135975268990014.

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碩士<br>國立雲林科技大學<br>環境與安全工程系碩士班<br>93<br>This research aims to the recovery of silver from the fixing waste liquid with electrolysis .To find out the best efficiency of recovering silver condition by changing the electric current, and estimate the economic benefits the recovery of silver in high electric current and low electric current, To determine the treatmet of the high COD waste liquid after retrieving the silver. The experimental result shows that 98.21% silver are recovery when high electric current is 3A electrolytic 3.5 hours, and the purity of silver is 98.62% and it only 80.55% silve

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PENG, YU-HSIEN, and 彭御賢. "Resource Recovery of Scrap Liquid Crystal Display." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/69643656642969266012.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>93<br>ABSTRACT The main purpose of this study is to recover the valuable metals of Indium and Tin as well as the clean glass substrate from scrap liquid crystal display (LCD). After manually dismantling, the liquid crystal and polarizing filter which attached to the surface of glass substrate can be removed by immersing this glass into the ethyl alcohol and liquid nitrogen baths, respectively. The indium tin oxide (ITO) which coated on the remaining glass surface can be 100% leached either by hydrochloric acid or by sodium hydroxide. The optimum hydrochloric

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Lu, Meng-Ni, and 呂孟昵. "Resource Recovery Technique for Scrap Compact disc." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/27682960099239840152.

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蕭孟官. "Resource recovery of scrap De-NOx catalysis." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/38120138054751203993.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>92<br>A series of tests of roasting, leaching, solvent extraction, precipitation and crystallization were conducted in this study to recover the valuable metals of tungsten and vanadium from scrap De-NOX Catalysis. The leaching result of this study reveals that 95.6 % of vanadium and 93.6 % of tungsten can be leached from scrap De-NOX Catalysis under the leaching conditions of solid/water=20g/200ml, temperature=70℃, and leaching time=1 hour. After the leaching solution treated by solvent extraction method, 92.2% of total tungsten can be extracted into organic phase u

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YU, CHENG-MIN, and 游丞民. "Resource Recovery of Scrap Sm-Co Magnet." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/y8z477.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>105<br>The purpose of this research is to study the recovery of samarium and cobalt metals from scrap Sm-Co magnet. The main tasks of this research are the sample collection, screening, composition analysis, leaching and purification. The results of this research shows that 90.68% of this collected scrap Sm-Co magnet sample has a size less than 100 mesh (0.149 mm) with a specific gravity, moisture content, ash content and combustible content of 6.11, 41.51%, 66.98% and -8.49%, respectively. This samarium and cobalt contents of this collected sample are 201,422mg/kg

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Chang, Yingwen, and 張映雯. "Resource Recovery of Silver Containing Pyrolysis Slag." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/23212539598571317158.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>100<br>The internal components of modern touch panel products contain Silver and other valuable resources, with their composition being mainly plastic and silver. Plastic recovery from touch panel is achieved via Thermal Cracking Technology (pyrolysis at 550°C for 2 hours). This pyrolysis slag contains valuable silver metal which can be recovered after further recycling processes. This study focuses on the recovery of silver from pyrolysis slag of touch panel. The processes of grinding, screening, leaching, replacement, electrolysis, and precipitation among other pro

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WONG, JIAN-JUNG, and 翁健中. "Resource Recovery of Gallium from Waste Liquid." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/20759897841813905714.

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碩士<br>大葉大學<br>環境工程學系碩士班<br>102<br>ABSTRACT The purpose of this study was to recover Gallium(Ga) metal from waste liquid, collected during the process of manufacturing light-emitting diodes. The major processes of this study involved: collection of Ga waste liquid, composition analysis, precipitation, crystallization, adsorption and replacement methods. Results show that the waste liquid contained 0.4655wt% Ga with pH 13.45 and was subjected to replacement by Fe, Zn and Al to reach a Garecovery of 25.82%, 29.20% and 69.13% respectively.The waste liquid was precipitated using HCl, NaCl and

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