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Dissertations / Theses on the topic 'Materials recycling'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Xie, Yiran. "Recycling of foundry waste materials." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6737/.

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The recycling of a foundry ceramic waste from investment casting has been investigated. The waste was reduced in size by fly pressing and disc milling to d50 < 20 μm and cleaned by magnetic separation and acid leaching. The powder contained zircon, alumina and amorphous silica with 37, 38 and 24 wt. % (ZrSiO4: Al2O3: SiO2) respectively. Two products were targeted: zirconia toughened mullite (ZTM) ceramics produced with an addition of alumina and zircon based pigments developed by the removal of alumina and reaction with colourant ions. With an addition of 23.5 wt. % Al2O3, a ZTM containing 30

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2

O'Mahony, Margaret Mary. "Recycling of materials in civil engineering." Thesis, University of Oxford, 1990. http://ora.ox.ac.uk/objects/uuid:25b3c922-4720-4424-a2c6-b19f00013148.

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Although Britain is relatively rich in natural aggregate reserves, planning approvals to develop new quarries are running at about half the rate of aggregate extraction. The use of secondary materials, such as recycled aggregate, might not create a major course of aggregate but if secondary material were used in less demanding situations, the quantity of natural aggregate required by the construction industry would be reduced. This dissertation reports mainly on laboratory tests conducted on crushed concrete and demolition debris to examine the potential use of these materials in new construct

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3

Rogetzer, Patricia, Lena Silbermayr, and Werner Jammernegg. "Sustainable sourcing of strategic raw materials by integrating recycled materials." Springer Nature, 2018. http://dx.doi.org/10.1007/s10696-017-9288-4.

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In this paper we investigate a manufacturer's sustainable sourcing strategy that includes recycled materials. To produce a short life-cycle electronic good, strategic raw materials can be bought from virgin material suppliers in advance of the season and via emergency shipments, as well as from a recycler. Hence, we take into account virgin and recycled materials from different sources simultaneously. Recycling makes it possible to integrate raw materials out of steadily increasing waste streams back into production processes. Considering stochastic prices for recycled materials, stocha

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4

Brommer, Tracey H. (Tracey Helenius). "Recycling production designs : the value of coordination and flexibility in aluminum recycling operations." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/79556.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 212-219).<br>The growing motivation for aluminum recycling has prompted interest in recycling alternative and more challenging secondary materials. The nature of these alternative secondary materials necessitates the development of an intermediate recycling facility that can reprocess the secondary materials into a liquid product. Two downstream aluminum remelters will incorporate the liquid products into t

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5

Voytyuk, Nazariy. "Recycling of Polypropylene and Polyamide Blends Using Thermomechanical Recycling." Thesis, KTH, Materialvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-277883.

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The aim of the thesis was to recycle a common carpet waste containing polyamide 6 (PA6) and polypropylene (PP) polymers with thermomechanical recycling. The produced products were compared to neat polymer materials. The recycled material underwent the thermomechanical process which includes shredding and extruding. The created filament was analyzed using various analysis techniques including FTIR, SEM, DSC and tensile testing for the mechanical properties. The filament was later evaluated with a 3D printer to see if a product could be made from the material. Filament containing recycled carpet

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6

Fenwick, Neal. "Recycling of composite materials using fluidised bed processes." Thesis, University of Nottingham, 1996. http://eprints.nottingham.ac.uk/12837/.

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Lightweight engineering plastics have been increasingly used in automotive applications(3), this tends toward more fuel efficient vehicles(1). Glass reinforced plastics commonly include thermosetting polymers. These cannot be re-moulded, unlike thermoplastics, thus thermoset scrap is currently disposed of in landfill. This is increasingly targeted by legislation(14) and is becoming more expensive. This thesis describes work to maximise resource recovery from scrap thermoset composites. A review of relevant literature identified thermal processes for treating scrap thermoset composites. Combust

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7

Huttunen, Maria, and Kristian Trolin. "Material Recycling After Use : - a review of the recyclability of materials in rail vehicles." Thesis, KTH, Maskinkonstruktion (Inst.), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-100079.

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The aim of this project is to investigate the recyclability as well as the recoverability of materials in the French commuter train NAT. The focus lies in identifying and tracking 57, or 98 % by mass, of the most frequently occurring materials through the end of life treatment process in order to obtain a clear image of the recyclability as well as recoverability of the materials used. The remaining 2% represents many different materials used in limited amount. The information is gathered through study visits, interviews and a literature reviews. Four definitions of recoverability and recyclab

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8

Woolard, Ryan. "Logistical Model for Closed Loop Recycling of Textile Materials." NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-03262009-143230/.

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In the United States alone, people consume and discard over 500 billion pounds of wastes annually. Wastes discarded in landfills create threats to land, air, and water, but also represent lost resources. Recycling has the ability to divert wastes from landfills and recover precious raw materials. However, recycling activities are only as efficient as the reverse logistics and supply chains that support them. These areas are relatively new, but successful implementations have real benefits for companies in terms of profits and environmental goodwill. Many companies are creating closed loop supp

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9

Angara, Raghavendra Phani Krishna. "Recovery of materials from recycling of spent furnace linings." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2008. http://scholarsmine.mst.edu/thesis/pdf/Angara_Raghavendra_09007dcc80575b94.pdf.

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Thesis (M.S.)--Missouri University of Science and Technology, 2008.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed November 4, 2008) Includes bibliographical references (p. 69-71).

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10

Villanueva, Luis. "The design of strategic collection systems for recyclable materials." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/23313.

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11

Nchabeleng, Ramphagane Frank. "Gold recovery from waste mobile phones PCBs using ammonia thiosulphate leaching and copper cementation process." Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2855.

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Thesis (Master of Engineering in Chemical Engineering)--Cape Peninsula University of Technology, 2018.<br>The rate of waste electrical and electronic equipment (WEEE) is growing at an alarming rate, especially in countries where markets are saturated with huge quantities of new electronic goods. Printed circuit boards (PCBs) are a substantial portion of the value contained in waste from WEEE although they are only 6% of the total weight. It is reported that WEEE is currently the fastest growing waste stream in South Africa as the general population’s access to electronic goods in the last deca

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12

Faleschini, Flora. "Techniques for sustainable building materials production: recycling in concrete industry." Doctoral thesis, Università degli studi di Padova, 2015. http://hdl.handle.net/11577/3423993.

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The excellent mechanical and durability properties, with its large availability and affordable costs, make concrete the most used engineered material, with an estimated worldwide consumption about 6 billion tons per year. The prices of this wide diffusion lie into the relevant environmental emissions associated to concrete industry: concrete production is in fact one of the main responsible of carbon emission in atmosphere, mainly due to cement manufacturing and natural aggregates extraction. Together with the energy requirements, water consumption and generation of construction and demolition

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13

Ikumapayi, Fatai Kolawole. "Flotation chemistry of complex sulphide ores : recycling of process water and flotation selectivity." Licentiate thesis, Luleå tekniska universitet, Industriell miljö- och processteknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26634.

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Recycling of flotation effluents through the ore processing plant is one of the ways of reducing both plant-operating costs and industrial impact onto the local ecosystem. Such waters named acid mine drainage (AMD), if discharged from sulphide flotation are gypsum (CaSO4.H2O) saturated and have a high salinity (on the order of 1000 ppm). As minor species, they commonly contain reduced sulphur compounds (RSC) (sulfoxyanions with sulphur in the oxidation state below (VI) such as SO32-, S2O32-, S2O52-, and S4O62-), cations of ferrous and non-ferrous metals, frothing molecules, residual chemical r

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Wong, May-ling. "Recycling in Hong Kong : case study on "conserving the Central & Western District materials recycling scheme at Mid-Levels" /." Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25436156.

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15

Li, Preston Pui-Chuen. "Strategies for aluminum recycling : insights from material system optimization." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33611.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2005.<br>Includes bibliographical references (p. 181-185).<br>The dramatic increase in aluminum consumption over the past decades necessitates a societal effort to recycle and reuse these materials to promote true sustainability and energy savings in aluminum production. However, the path towards this goal is full of challenges which lead to inefficiencies in the usage of secondary materials. These frictions are due to (i) rapidly changing consumption patterns, (ii) compositional incompatibility

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Wong, May-ling, and 黃美靈. "Recycling in Hong Kong: case study on "conserving the Central & Western District materials recycling schemeat Mid-Levels"." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31255371.

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17

Ma, Ping. "Experimental studies on treatment and recycling of pickling sludge generated in stainless steel production." Licentiate thesis, Luleå tekniska universitet, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18242.

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Pickling sludge generated in the stainless steel industries contains large amounts of calcium fluoride and water and relatively small amounts of metals. Therefore, such sludge is difficult to be directly recycled back to the EAF process and would be harmful to the environment if deposited as landfill for a long term. The main objective of the present thesis work is to find out proper ways to treat the pickling sludge and to recover useful metals from it. For this, characterisations, solid-state reduction and smelting reduction tests on the pickling sludge were carried out in the laboratory. Li

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18

Nounezi, Thomas. "Light Weight and High Strength Materials Made of Recycled Steel and Aluminum." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/20523.

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Recycling has proven not only to address today’s economical, environmental and social issues, but also to be imperative for the sustainability of human technology. The current thesis has investigated the feasibility of a new philosophy for Recycling (Alloying-Recycling) using steel 1020 and aluminum 6061T6. The study was limited to the metallurgical aspects only and has highlighted the potential of recycled alloys made of recycled aluminum and steel to exhibit substantially increased wear resistance and strength-to-weight ratio as compared to initial primary materials. Three alloy-mixtures are

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Law, Tak-chi, and 羅德智. "Special characteristics of construction and demolition materials recycling in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31255917.

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Kennerley, Jonathan. "Recycling fibres recovered from composite materials using a fluidised bed process." Thesis, University of Nottingham, 1998. http://eprints.nottingham.ac.uk/12849/.

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This work is concerned with the characterisation and reuse of fibres recovered from end of life thermoset composites by fluidised bed thermal processing. Emphasis is placed on the properties of recovered glass fibres and their reuse in a dough moulding compound and a tissue product. The need for a recycling process is demonstrated by a survey of the market for thermoset composites with particular consideration given to the potential growth in automotive applications. A study of processes developed to recycle such materials and the effect on the structural properties of composites containing su

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21

Ge, Dayang. "Direct Lithium-ion Battery Recycling to Yield Battery Grade Cathode Materials." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/92800.

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The demand for Lithium-ion batteries (LIBs) has been growing exponentially in recent years due to the proliferation of electric vehicles (EV). A large amount of lithium-ion batteries are expected to reach their end-of-life (EOL) within five to seven years. The improper disposal of EOL lithium-ion batteries generates enormous amounts of flammable and explosive hazardous waste. Therefore, cost-effectively recycling LIBs becomes urgent needs. Lithium nickel cobalt manganese oxides (NCM) are one of the most essential cathode materials for EV applications due to their long cycle life, high capacity

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Brundin, Sebastian, and Adam Gräns. "Efficient Recycling Of Non-Ferrous Materials Using Cross-Modal Knowledge Distillation." Thesis, Linköpings universitet, Datorseende, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-178092.

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This thesis investigates the possibility of utilizing data from multiple modalities to enable an automated recycling system to separate ferrous from non-ferrous debris. The two methods sensor fusion and hallucinogenic sensor fusion were implemented in a four-step approach of deep CNNs. Sensor fusion implies that multiple modalities are run simultaneously during the operation of the system.The individual outputs are further fused, and the joint performance expects to be superior to having only one of the sensors. In hallucinogenic sensor fusion, the goal is to achieve the benefits of sensor fus

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Mattsson, Agnes-Matilda, Towa Eriksson, Caroline Löwnertz, and Marielle Holmbom. "Recycling of Prussian White." Thesis, Uppsala universitet, Institutionen för kemi - Ångström, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-445281.

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The aim of this project was to find a recycling route for Prussian white. During the experimental part, one recycling method was tested using sodium hydroxide and from this a method for re-synthesis of Prussian white was conducted as well as a method for re-crystallisation of sodium ferrocyanide. The method that proved most successful was the re-crystallisation of sodium ferrocyanide. Furthermore, the conditions needed to conduct a proper re-synthesis of Prussian white was not available during this research. Therefore, it was not possible to produce Prussian white of the right structure. The a

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Biju-Duval, Paul M. "A new porous material based on cenospheres." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/26523.

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Thesis (M. S.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Dr. Mulalo Doyoyo; Committee Member: Dr. Arash Yavari; Committee Member: Dr. Kenneth M. Will. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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25

Atlee, Jennifer Robinson. "Operational sustainability metrics : a case of electronics recycling." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32276.

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Thesis (S.M.)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2005.<br>Includes bibliographical references (p. 119-127).<br>In the past 15 years corporations and governments have developed a growing appreciation of the need for "sustainability" and have worked the term into their goals, strategy and mission statements. Despite extensive efforts to define the term, there is still little clarity on how to move toward sustainability or measure improv

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Fu, Xinkai. "Assessing byproduct mining and metal recycling as indicators of material criticality." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/123618.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 170-184).<br>The development of advanced technologies relies on using a broader suite of elements from the periodic table, and many agree that the future availability of a set of 'critical materials' is an issue of global concern. However, assessments of material criticality are often overly general, leading to excessive concerns by policy makers and market participants. A quantitative and detailed in

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Chang, Jiyoun Christina. "Designing two-stage recycling operations for increased usage of undervalued raw materials." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101795.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2015.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 126-130).<br>Recycling provides a key strategy to move towards a more sustainable society by partially mitigating the impact of fast-growing material consumption. Recent advances in reprocessing technologies enable recyclers to incorpo

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Kraft, Cecilia, and Daniel Laving. "Modelling the Flow and Allocation of Materials from Battery Recycling through Production." Thesis, KTH, Energiteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297573.

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With the current shift towards renewable energy sources, the demand for batteries is expected to follow an exponential increase in the future, and lithium-ion batteries will be the bulk of it. In order to reduce carbon dioxide emissions from battery production and to secure future availability of critical metals, more batteries will need to be recycled. To incentivize this, the European Union will impose regulations on recycling efficiencies as well as recycled content in produced batteries. The purpose of this study was twofold. Firstly, it was to construct a model in Microsoft Excel which co

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29

Calgaro, Loris <1991&gt. "Stabilized materials from contaminated waste recycling : characterization, immobilization, and leaching of contaminants." Doctoral thesis, Università Ca' Foscari Venezia, 2019. http://hdl.handle.net/10579/17842.

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The contamination of soils, sediments, and industrial wastes from both heavy metals and organic pollutants is recognised as a very important environmental problem, highlighting the need to improve or develop effective remediation techniques to support sustainable management strategies. In particular, the High Performance Solidification/Stabilization process is a S/S treatment specifically addressed to the production of a granular material reusable as building material. In this context, it is fundamental to understand the mechanisms involved in the retention and leaching of potentially hazardou

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Gaustad, Gabrielle G. "Towards sustainable material usage : time-dependent evaluation of upgrading technologies for recycling." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/53243.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2009.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 151-160).<br>As consumption in the US grows, so does concern about sustainable materials usage. Increasing recycling is a key component within a broad arsenal of strategies for moving towards sustainable materials usage. There are many barriers to increasing recycling; one that is problematic is compositional uncertainty in the scrap stream. Repeated recycling compounds this problem through the accumulation

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Philipson, Harald. "The effect of thickness and compaction on the recovery of aluminium in recycling of foils in salt flux." Thesis, KTH, Materialvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280048.

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In Norway, more than 40.000 tonnes of aluminum (Al) in food packaging goes to incineration annually. Recycling this waste would save more than 1.5 TWh of energy and several hundred thousand tonnes of CO2 emissions. However, recycling thin aluminum foil in small packaging is more difficult than recycling of larger and cleaner scrap. In this thesis, properties of compacted coating-free Al foil with five different thicknesses (15, 30, 100, 200, 300 𝜇𝜇m) were investigated and related to percentage Al recovery during remelting in salt flux. This thesis consists of five main parts. Two initial studi

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PRADO, ULISSES S. do. "Nova alternativa para reaproveitamento do resíduo perigoso gerado na produção de alumínio primário (SPL): obtenção de vidros opacos e fritas." reponame:Repositório Institucional do IPEN, 2008. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11673.

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Made available in DSpace on 2014-10-09T12:54:36Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:07:58Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energéticas e Nucleares - IPEN/CNEN-SP

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Dabbas, Hashem H. "The role of demand uncertainty in materials selection : a case study on aluminum recycling." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42992.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2007.<br>"June 2007."<br>Includes bibliographical references (leaves 53-54).<br>Aluminum is a versatile material that is used frequently in transportation and packaging, two industries with substantial recent growth. The increase in demand for aluminum, however, has outpaced the growth of primary aluminum production. One way to meet this shortfall is the use of secondary, or recycled, materials which provides both economic and environmental benefits. The increased use of secondary materials is lim

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Choi, Taelim. "Economic and environmental input-output modeling: building material recycling." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45924.

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A key dimension to improving urban economic and environmental sustainability is the efficient use of resources through recycling. A thriving recycling system requires not only effective institutional policies and community-wide diversion efforts, but also a competent local and regional recycling industry. Although the recycling industry has traditionally been recognized as a local service and fringe industry, it has noticeably transformed into an integral segment of industrial production systems as manufacturers have increasingly begun to adopt the principle of extended producer responsibility

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Machado, Messias dos Santos. "Nanocompósito de poliestireno reciclado, bentonita sódica e hemi-hidrato de sulfato de cálcio: obtenção e caracterização." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-04072016-112155/.

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Nesta Tese foram preparados, em solução, filmes híbridos de argila e poliestireno provenientes de copos descartáveis comercializados no mercado brasileiro, com acetato de etila e glicerol. Posteriormente, foi adicionado o Hemi-hidrato de sulfato de cálcio como carga de reforço. Tanto a argila quanto o glicerol, assim como o hemihidrato de sulfato de cálcio, foram utilizados nos percentuais relativos à massa do poliestireno fragmentado correspondendo a 1%,2%, 3%,4%, 5% e 7%. Dos filmes, nos percentuais 3, 4, 5 e 7, exclui-se o percentual de 4% e os demais foram fragmentados e submetidos a extru

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Björquist, Stina. "Separation for regeneration : Chemical recycling of cotton and polyester textiles." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-12388.

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In 2015, 96.7 million tonnes of textile fibres were produced world-wide. Our high consumption of textiles leads to an increased amount of textile waste. In Sweden, the majority of used clothing and textiles are incinerated due to the lack of recycling techniques. A large amount of post-consumer textile waste is made from blended materials. One of the most common blends, used in as near as all workwear and service textiles, is cotton/polyester. To enable chemical recycling of such textiles, cotton and polyester must first be separated. The aim of this thesis was to separate the materials by dep

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King, Yao-Chung. "Materials production economics : an examination of the variables and relationships that drive materials production and recycling in the world economy." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/35063.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2006.<br>Includes bibliographical references (p. 29).<br>Introduction: New materials are being developing each year that could revolutionize the world. However, while development of novel materials in the lab brings us one step closer to next latest-and-greatest innovation, the following and perhaps similarly difficult step requires bringing these materials to the world market. Indeed, "although U.S. firms have invested the majority of materials introduced over the past half-century, they have fai

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Chen, Andrew Chinshun. "A product lifecycle framework for environmental management and policy analysis : case study of automobile recycling." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/38089.

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Seo, Yoseoph. "The Role of Generation Volume and Photon Recycling in "Transport Imaging" of Bulk Materials." Thesis, Monterey, California. Naval Postgraduate School, 2012.

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Approved for public release; distribution is unlimited.<br>The goal of this research was to use Monte Carlo simulations to further develop the model that describes transport imaging by including a more realistic description of the generation region created by the incident electrons. Monte Carlo simulation can be used to determine the energy distribution in bulk materials due to the interaction with incident electrons. In the simulation, the incident electrons undergo both elastic and inelastic scattering events. Through these events, the energy of the electrons is transferred to the target mat

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Turan, Irmak. "From sink to stock : the potential for recycling materials from the existing built environment." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/106425.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Architecture, 2016.<br>"June 2016." Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 88-93).<br>This thesis examines the prospect for new local recycling schemes for concrete and masonry waste within an existing urban environment. Using Lisbon, Portugal as a case study, I propose three context-specific material recycling scenarios to make use of mineral construction waste generated as city's aging residential building stock is replaced over the next 30 years. The objective of the work is to ex

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Megrahi, M. S. "Case study to evaluate working environment at Materials Recycling Facility in South Wales, UK." Thesis, Cardiff Metropolitan University, 2009. http://hdl.handle.net/10369/842.

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The study was carried out during August–September 2006 and May 2007 to evaluate the working environment of a materials recycling facility in South Wales, UK. A complete comprehensive risk assessment was undertaken. The measurements were conducted at various monitoring points within the segregation hall and administration area at the materials recycling facility: tipping hall, segregation line, baling area, resting room, administration area, and upwind and downwind monitoring points. The results of risk assessment showed that the segregation line and the baler area were the high-risk areas. Con

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Junior, Oscar Luiz Ferreira. "Processos de separação de materiais metálicos e não metálicos na reciclagem de resíduos de placas de circuito impresso de microcomputadores." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-19112013-141922/.

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Com a aprovação da Política Nacional de Resíduos Sólidos, a política de sustentabilidade tende ao reaproveitamento de resíduos, em seu ciclo ou destinação final ambientalmente adequada. Neste contexto, são apresentados neste trabalho, estudos do processo de separação de materiais metálicos e não metálicos encontrados em placas de circuito impresso de microcomputadores e a caracterização dos elementos químicos presentes. Para isto efetuou-se a trituração primária (moagem) das placas de circuito impresso, classificação granulométrica, separação de elementos metálicos e não metálicos utilizando s

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Jamshidi, Mohammadsadegh. "A process for recycling thermosetting foams and the incorporation of recycled foams into structural composite panels." Thesis, Queen Mary, University of London, 2009. http://qmro.qmul.ac.uk/xmlui/handle/123456789/581.

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In Europe, the rapidly growing thermosetting foam insulation products industry comprises over 11,500 companies employing over a third of a million people and is worth about 6 billion Euros in trade. It is currently estimated 4-7 % of total new UK production is scrapped and goes to landfill. Estimated costs of disposing of this waste foam are of the order of £20 million/annum to the producers of foam panels and insulation blocks. A new strategic direction for rigid polymeric foams waste management has been developed converting the scrapped thermosetting foams into high added value material that

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Sulaiman, Salim J. "Fracture and crack growth in recycled mixes." Thesis, University of Dundee, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320522.

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Ng, Kelvin Tsun Wai. "The use of waste-derived paste as daily cover materials for enhancing geo-environmental performance of sanitary landfills /." View abstract or full-text, 2008. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202008%20NG.

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SOUZA, ELISEU W. de. "Estudo para fabricacao de refletores automobilisticos utilizando um material composito termofixo de um material termoplastico." reponame:Repositório Institucional do IPEN, 2010. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9602.

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Made available in DSpace on 2014-10-09T12:28:30Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:56:15Z (GMT). No. of bitstreams: 0<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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Ryder, Kathryn. "The development of paper-based materials from low-grade apparel waste." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/the-development-of-paperbased-materials-from-lowgrade-apparel-waste(9aef77c7-57ac-4cf1-8d4b-0d6952dd4f19).html.

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The recycling rate of post-consumer apparel waste is low. This is compounded by our limited understanding of the fibre recovered from apparel waste and a lack of development in novel applications. Motivated by the growing rate of accumulation in unwanted clothing, this study focused on a number of integrated research themes aimed at understanding the nature of reclaimed cotton fibre, its use in paper-based materials and its utilisation in apparel related applications. Initially, the investigation characterised reclaimed cotton fibres from two different recovery machines (pinned air-layer and c

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Kirchain, Randolph E. (Randolph Edward) 1971. "Modeling methods for complex manufacturing systems : studying the effects of materials substitution on the automobile recycling infrastructure." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9692.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1999.<br>Includes bibliographical references (p. 237-241).<br>Classically, technical cost models have been constructed using commercial spreadsheet problems. Spreadsheets, however, are not well suited to construct models of industrial systems, especially those where variable configurations of operation steps arc of interest. In light of this, a methodological framework and complementary computer tool were developed to address the existing impediments to system modelinb. This tool parametrizes the

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Waterman, Donna Ruth. "Curbside collection of recyclable materials: fifteen cases studies in the United States." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/44096.

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Fifteen curbside recycling programs in the United States, from communities representing a variety of economic, geographic and political situations, were reviewed in this study. Case studies were analyzed and discussed with respect to four areas of interest to program planners: administration, operations, promotion and evaluation. No objective rating of the programs was attempted, but approaches were reviewed with respect to their ability to satisfy the goals of the programs. Comparisons of participation rates, waste diversion rates, and costs were used cautiously because of the inconsist

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De, Jongh Willem Adriaan. "Possible applications for vacuum pyrolysis in the processing of waste materials." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52407.

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Thesis (MScEng)--University of Stellenbosch, 2001.<br>ENGLISH ABSTRACT: Current global trends in government, industry and popular OpInIOn indicate that recycling will become essential in the future. Vacuum pyrolysis is a new technology with many recycling applications that have not yet been investigated. This study is a contribution towards the better understanding of the vacuum pyrolysis process and also towards finding possible economically favourable recycling applications. A batch operated tube furnace, which allowed the controlled heating of different materials in a vacuum, was des

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