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https://www.readbyqxmd.com/read/27890594/an-investigation-of-trends-in-precious-metal-and-copper-content-of-ram-modules-in-weee-implications-for-long-term-recycling-potential
#1
Rhys Gareth Charles, Peter Douglas, Ingrid Liv Hallin, Ian Matthews, Gareth Liversage
Precious metal (PM) and copper content of dynamic-RAM modules placed on the market during 1991-2008 has been analysed by AAS following comminution and acid digestion. Linear regression analysis of compositional data ordered according to sample chronology was used to identify historic temporal trends in module composition resulting from changes in manufacturing practices, and to project future trends for use in more accurate assessment of future recycling potential. DRAM was found to be 'high grade' waste with: stable levels of gold and silver over time; 80% reduction in palladium content during 1991-2008; and 0...
November 24, 2016: Waste Management
https://www.readbyqxmd.com/read/27836519/extended-producer-responsibility-the-impact-of-organizational-dimensions-on-weee-collection-from-households
#2
Filippo Corsini, Francesco Rizzi, Marco Frey
Extended Producer Responsibility (EPR) has been the backbone of product life cycle management in Europe since the 2000s. Unfortunately, EPR implementation has multiple impacts on the supply chain and, thus, its consequences are not always easily manageable. Although several studies have explored various examples within the EU, the determinants of the effectiveness of EPR management are still not fully understood. This research seeks to bridge this gap by making use of quantitative analyses to investigate how key issues related to: WEEE Directive transposition and organizational settings adopted by each Member State, influenced the results achieved in those Member States in terms of collection from households...
November 8, 2016: Waste Management
https://www.readbyqxmd.com/read/27793304/weee-booming-for-sustainable-recycling
#3
EDITORIAL
Ata Akcil
No abstract text is available yet for this article.
November 2016: Waste Management
https://www.readbyqxmd.com/read/27769652/a-proposal-to-improve-e-waste-collection-efficiency-in-urban-mining-container-loading-and-vehicle-routing-problems-a-case-study-of-poland
#4
Piotr Nowakowski
Waste electrical and electronic equipment (WEEE), also known as e-waste, is one of the most important waste streams with high recycling potential. Materials used in these products are valuable, but some of them are hazardous. The urban mining approach attempts to recycle as many materials as possible, so efficiency in collection is vital. There are two main methods used to collect WEEE: stationary and mobile, each with different variants. The responsibility of WEEE organizations and waste collection companies is to assure all resources required for these activities - bins, containers, collection vehicles and staff - are available, taking into account cost minimization...
October 18, 2016: Waste Management
https://www.readbyqxmd.com/read/27769650/process-window-for-direct-recycling-of-acrylonitrile-butadiene-styrene-and-high-impact-polystyrene-from-electrical-and-electronic-equipment-waste
#5
Yamila V Vazquez, Silvia E Barbosa
The aim of this paper is to assess recycling process window of ABS (Acrylonitrile-Butadiene-Styrene) and HIPS (High impact Polystyrene) from WEEE (waste from electrical and electronic equipment) through a final properties/structure screening study on their blends. Main motivation is to evaluate which amount of one plastic WEEE can be included into the other at least keeping their properties. In this sense, a wider margin of error during sorting could be admitted to obtain recycling materials with similar technological application of recycled ABS and HIPS by themselves...
October 18, 2016: Waste Management
https://www.readbyqxmd.com/read/27744159/estimation-of-obsolete-cellular-phones-generation-a-case-study-of-china
#6
Xueyi Guo, Kang Yan
Rapid development of electronic technique has led to decreasing lifespan of electronic products. Meanwhile, the amount of waste electrical and electronic equipment (WEEE) is rapidly growing in recent years especially in China. The generation amount of WEEE is one of the basic information for waste management. In our study, the generation of obsolete cellular phones and metals containing of cellular phones were estimated from 1997 to 2025. The future average possession in per 100 inhabitants of cellular phones was predicted using logistic model...
October 12, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27723459/innovating-e-waste-management-from-macroscopic-to-microscopic-scales
#7
Xianlai Zeng, Congren Yang, Joseph F Chiang, Jinhui Li
Waste electrical and electronic equipment (WEEE or e-waste) has become a global problem, due to its potential environmental pollution and human health risk, and its containing valuable resources (e.g., metals, plastics). Recycling for e-waste will be a necessity, not only to address the shortage of mineral resources for electronics industry, but also to decline environmental pollution and human health risk. To systematically solve the e-waste problem, more attention of e-waste management should transfer from macroscopic to microscopic scales...
October 7, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27687078/where-next-on-e-waste-in-australia
#8
Artem Golev, Diego R Schmeda-Lopez, Simon K Smart, Glen D Corder, Eric W McFarland
For almost two decades waste electrical and electronic equipment, WEEE or e-waste, has been considered a growing problem that has global consequences. The value of recovered materials, primarily in precious and base metals, has prompted some parts of the world to informally and inappropriately process e-waste causing serious environmental and human health issues. Efforts in tackling this issue have been limited and in many ways unsuccessful. The global rates for formal e-waste treatment are estimated to be below the 20% mark, with the majority of end-of-life (EoL) electronic devices still ending up in the landfills or processed through rudimentary means...
September 26, 2016: Waste Management
https://www.readbyqxmd.com/read/27679968/environmental-impact-assessment-of-different-end-of-life-lcd-management-strategies
#9
Alessia Amato, Laura Rocchetti, Francesca Beolchini
The strong growth of the electrical and electronic equipment production combined with its short lifespan are causing the production of a significant amount of waste to treat. In particular, the present paper focuses on end-of-life liquid crystal displays (LCDs) for their significant content of valuable materials, like plastic, glass and metals that could be recovered after dismantling. In the recent literature, traditional LCD recycling processes are combined with innovative treatments, which allow to recover critical raw materials, such as indium...
September 24, 2016: Waste Management
https://www.readbyqxmd.com/read/27673726/examining-the-evolution-of-metals-utilized-in-printed-circuit-boards
#10
Gilbert Umaye Adie, Lingyu Sun, Xianlai Zeng, Lixia Zheng, Oladele Osibanjo, Jinhui Li
Management of waste electrical and electronic equipment (WEEE) has recently attracted worldwide attention because of high metal concentrations in them. Evolution of toxic and precious metals utilized in WEEE can not only reflect the adventure of eco-design, but can also guide the final recycling option. Pb, As, Cu, Au, Sn and Ag were determined in 10 composite samples of printed circuit boards of cathode ray tube televisions (TV-PCBs) that were produced between 1980 and 2005. The obtained results indicated that average metal concentrations in all TV-PCBs were - Cu: 10...
October 2, 2016: Environmental Technology
https://www.readbyqxmd.com/read/27602948/sustainable-and-selective-separation-of-pvc-and-abs-from-a-weee-plastic-mixture-using-microwave-and-or-mild-heat-treatment-with-froth-flotation
#11
Nguyen Thi Thanh Truc, Byeong-Kyu Lee
This study reports simple, selective, and sustainable separation of chlorinated plastic (polyvinyl chloride, PVC) and acrylonitrile butadiene styrene (ABS) containing brominated flame retardants (BFRs) from mixed waste electrical and electronic equipment (WEEE) plastics using microwave and/or mild-heat treatment. Microwave treatment after plastic coating with powdered activated carbon (PAC) selectively increased the hydrophilicity of the PVC surface, which facilitated PVC separation (100% recovery and purity) from the WEEE plastic mixture under the optimum flotation conditions...
October 4, 2016: Environmental Science & Technology
https://www.readbyqxmd.com/read/27596942/recycling-weee-polymer-characterization-and-pyrolysis-study-for-waste-of-crystalline-silicon-photovoltaic-modules
#12
Pablo Dias, Selene Javimczik, Mariana Benevit, Hugo Veit
Photovoltaic (PV) modules contain both valuable and hazardous materials, which makes its recycling meaningful economically and environmentally. In general, the recycling of PV modules starts with the removal of the polymeric ethylene-vinyl acetate (EVA) resin using pyrolysis, which assists in the recovery of materials such as silicon, copper and silver. The pyrolysis implementation, however, needs improvement given its importance. In this study, the polymers in the PV modules were characterized by Fourier transform infrared spectroscopy (FTIR) and the removal of the EVA resin using pyrolysis has been studied and optimized...
September 2, 2016: Waste Management
https://www.readbyqxmd.com/read/27554437/a-simple-primary-amide-for-the-selective-recovery-of-gold-from-secondary-resources
#13
Euan D Doidge, Innis Carson, Peter A Tasker, Ross J Ellis, Carole A Morrison, Jason B Love
Waste electrical and electronic equipment (WEEE) such as mobile phones contains a plethora of metals of which gold is by far the most valuable. Herein a simple primary amide is described that achieves the selective separation of gold from a mixture of metals typically found in mobile phones by extraction into toluene from an aqueous HCl solution; unlike current processes, reverse phase transfer is achieved simply using water. Phase transfer occurs by dynamic assembly of protonated and neutral amides with [AuCl4 ](-) ions through hydrogen bonding in the organic phase, as shown by EXAFS, mass spectrometry measurements, and computational calculations, and supported by distribution coefficient analysis...
September 26, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27520390/penicillium-expansum-link-strain-for-a-biometallurgical-method-to-recover-rees-from-weee
#14
Simone Di Piazza, Grazia Cecchi, Anna Maria Cardinale, Cristina Carbone, Mauro Giorgio Mariotti, Marco Giovine, Mirca Zotti
Due to the wide range of applications in high-tech solutions, Rare Earth Elements (REEs) have become object of great interest. In the last years several studies regarding technologies for REE extraction from secondary resources have been carried out. In particular biotechnologies, which use tolerant and accumulator microorganisms to recover and recycle precious metals, are replacing traditional methods. This paper describes an original biometallurgical method to recover REEs from waste electrical and electronic equipment (WEEE) by using a strain of Penicillium expansum Link isolated from an ecotoxic metal contaminated site...
August 9, 2016: Waste Management
https://www.readbyqxmd.com/read/27478027/recovery-of-valuable-metals-from-electronic-scraps-by-clays-and-organo-clays-study-on-bi-ionic-model-solutions
#15
Elena Maria Iannicelli-Zubiani, Cinzia Cristiani, Giovanni Dotelli, Paola Gallo Stampino
The demand of valuable metals, as precious metals and rare earths, is constantly increasing in the global market, as many and different technological applications exploit these materials because of their unique properties. Since natural resources are located just in focused areas, an interesting possibility could be the recovery of metals from Waste Electrical and Electronic Equipment (WEEE). The aim of this work is to evaluate the recovery potentialities of clays and organo-clay based systems towards the metals contained in the solutions of electronic scraps dissolved in strong acid, by preliminary tests on bi-ionic model solutions...
July 28, 2016: Waste Management
https://www.readbyqxmd.com/read/27425861/influence-of-impurities-on-the-performances-of-hips-recycled-from-waste-electric-and-electronic-equipment-weee
#16
Didier Perrin, Olivier Mantaux, Patrick Ienny, Romain Léger, Michel Dumon, José-Marie Lopez-Cuesta
In order to produce a high quality recycled material from real deposits of electric and electronic equipment, the rate of impurities in different blended grades of reclaimed materials has to be reduced. Setting up industrial recycling procedures requires to deal with the main types of polymers presents in WEEE (Waste Electric and Electronic Equipment), particularly High Impact Polystyrene (HIPS) as well as other styrenic polymers such as Acrylonitrile-Butadiene-Styrene (ABS), Polystyrene (PS) but also polyolefin which are present into WEEE deposit as Polypropylene (PP)...
October 2016: Waste Management
https://www.readbyqxmd.com/read/27353372/assessing-effectiveness-of-weee-management-policy-in-australia
#17
Ashleigh Morris, Graciela Metternicht
Australia is one of the top ten consumers of electrical and electronic (EE) products in the world; yet legislation for the management of WEEE (Waste Electrical and Electronic Equipment) is in its infancy and has received minimal review. This paper sets to assess the effectiveness of Australian legislation, policies and associated instruments, with a focus on the sub-national level of implementation. A mixed methodology was adopted to this end, including: literature review, case study, semi-structured interviews and a comparative analysis of WEEE management practices in Australia versus Japan and Switzerland; the latter to identify causative factors of international leading practice that could advance current policy in Australia...
October 1, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27329553/the-evolution-of-the-italian-epr-system-for-the-management-of-household-waste-electrical-and-electronic-equipment-weee-technical-and-economic-performance-in-the-spotlight
#18
Marinella Favot, Raphael Veit, Antonio Massarutto
In this paper we analyse the Italian collective system for the management of household Waste Electrical and Electronic Equipment (WEEE), and its evolution over time, following the European Directives on WEEE, which include the Extended Producer Responsibility (EPR). The analysis focuses on the technical and economic performance of WEEE compliance organisations (consortia), as they are the key players in the Italian EPR regime. Economic results have not usually been provided in previous studies, due to the lack of available data...
October 2016: Waste Management
https://www.readbyqxmd.com/read/27281541/improving-the-accuracy-of-hand-held-x-ray-fluorescence-spectrometers-as-a-tool-for-monitoring-brominated-flame-retardants-in-waste-polymers
#19
A Guzzonato, F Puype, S J Harrad
An optimised method for Br quantification as a metric of brominated flame retardant (BFR) concentrations present in Waste Electrical and Electronic Equipment (WEEE) polymers is proposed as an alternative to the sophisticated, yet time consuming GC-MS methods currently preferred. A hand-held X-ray fluorescence (XRF) spectrometer was validated with Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). Customized standard materials of specific BFRs in a styrenic polymer were used to perform an external calibration for hand-held XRF ranging from 0...
September 2016: Chemosphere
https://www.readbyqxmd.com/read/27262786/propelling-plastics-into-the-circular-economy-weeding-out-the-toxics-first
#20
H A Leslie, P E G Leonards, S H Brandsma, J de Boer, N Jonkers
The Stockholm Convention bans toxic chemicals on its persistent organic pollutants (POPs) list in order to promote cleaner production and prevent POPs accumulation in the global environment. The original 'dirty dozen' set of POPs has been expanded to include some of the brominated diphenyl ether flame retardants (POP-BDEs). In addition to cleaner production, there is an urgent need for increased resource efficiency to address the finite amount of raw materials on Earth. Recycling plastic enhances resource efficiency and is part of the circular economy approach, but how clean are the materials we are recycling? With the help of a new screening method and detailed analyses, we set out to investigate where these largely obsolete BDEs were showing up in Dutch automotive and electronics waste streams, calculate mass flows and determine to what extent they are entering the new product chains...
September 2016: Environment International
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