keyword
https://read.qxmd.com/read/37792181/generation-estimation-and-metals-recycling-potentials-evaluation-of-retired-mobile-phones-in-korea
#21
JOURNAL ARTICLE
Ang Li, Bo Li, Huibin Wang, Xia Liu, Yanan Guo, Bin Lu
The goal of this work is to evaluate generation and metals recycling potentials of retired mobile phones in Korea. The generation estimation is conducted with the sales&new method and statistic data, such as sales of mobile phones and amount of the subscribers. The result shows that there are 17.99 million of mobile phones retired in 2022, compared 13.12 million in 2001. Accordingly, the deduced lifetime has minimum and maximum values in 2003 and 2020, which are 2.02 and 4.33 years, compared with 4...
October 4, 2023: Environmental Science and Pollution Research International
https://read.qxmd.com/read/37769718/concentrations-and-legislative-aspects-of-pbdes-in-plastic-of-waste-electrical-and-electronic-equipment-in-brazil
#22
JOURNAL ARTICLE
Hansel David Burgos Melo, Juliana de Souza-Araujo, Laura Geraldine Benavides Garzón, João Carlos Macedo, Rafael Cardoso, Sandro Donnini Mancini, Stuart Harrad, André Henrique Rosa
Brominated flame retardants (BFRs) have been widely used as additives in polymeric products such as electronic and electrical equipment (EEE) to help meet fire safety regulations. However, some BFRs like polybrominated diphenyl ethers (PBDEs), are now listed under the Stockholm Convention on persistent organic pollutants (POPs) and banned in many countries, due to their adverse health impacts, environmental persistence, and capacity for bioaccumulation and long-range atmospheric transport. Despite this, in Brazil, only a few studies exist of the presence of these contaminants in the environment, and even fewer in waste EEE (WEEE)...
September 26, 2023: Science of the Total Environment
https://read.qxmd.com/read/37763583/a-preliminary-study-on-the-use-of-highly-aromatic-pyrolysis-oils-coming-from-plastic-waste-as-alternative-liquid-fuels
#23
JOURNAL ARTICLE
Asier Asueta, Laura Fulgencio-Medrano, Rafael Miguel-Fernández, Jon Leivar, Izotz Amundarain, Ana Iruskieta, Sixto Arnaiz, Jose Ignacio Gutiérrez-Ortiz, Alexander Lopez-Urionabarrenechea
In this work, the low-temperature pyrolysis of a real plastic mixture sample collected at a WEEE-authorised recycling facility has been investigated. The sample was pyrolysed in a batch reactor in different temperature and residence time conditions and auto-generated pressure by following a factorial design, with the objective of maximising the liquid (oil) fraction. Furthermore, the main polymers constituting the real sample were also pyrolysed in order to understand their role in the generation of oil. The pyrolysis oils were characterised and compared with commercial fuel oil number 6...
September 20, 2023: Materials
https://read.qxmd.com/read/37695483/a-recent-digitalization-in-recycling-industry-attaining-ecological-sustainability-a-comprehensive-outlook-and-future-trend
#24
JOURNAL ARTICLE
Syed Abdul Rehman Khan, Muhammad Umar, Zhang Yu, Muhammad Tanveer Nawaz
The management of waste through dual way of recycling (i-e offline and online) is assumed to have a key role in attaining ecological sustainability and enabling circular practices. The research on online recycling is gaining evolution in recent age. Prior literature on the current research theme has failed to provide a comprehensive outlook and future trend. Therefore, the current research intends to elaborate the current research scenario linked with online recycling by critically scrutinizing the prior research over the last 41 years...
September 11, 2023: Environmental Science and Pollution Research International
https://read.qxmd.com/read/37591106/incorporating-self-employed-maintainers-into-weee-formal-recycling-system-a-system-dynamic-approach
#25
JOURNAL ARTICLE
Tao Chu, Yongguang Zhong, Weiqiang Jia
The establishment and operation of a formal recycling system for waste electrical and electronic equipment is an important measure to reduce environmental hazards and improve the recycling of resources, but how to incorporate self-employed maintainers into the system has formed an important research gap. Based on the perspective of extended producer responsibility, we argue that self-employed maintainers are required to assume the corresponding environmental responsibility for the environmental externality caused by informal maintenance activities...
August 15, 2023: Journal of Environmental Management
https://read.qxmd.com/read/37442475/are-uk-e-waste-recycling-facilities-a-source-of-environmental-contamination-and-occupational-exposure-to-brominated-flame-retardants
#26
JOURNAL ARTICLE
Yulong Ma, Ester Konecna, Reginald Cline-Cole, Stuart Harrad, Mohamed Abou-Elwafa Abdallah
Investigations into the impacts of regulated electrical and electronic waste (e-waste) recycling activities on urban environments in Europe remain rather scarce. In this study, dust samples taken both inside and outside of five UK e-waste recycling facilities were analysed for concentrations of polybrominated diphenyl ethers (PBDEs), novel brominated flame retardants (NBFRs), and hexabromocyclododecane (HBCDD). Average concentrations of ∑BFRs in dust inside and outside UK e-waste recycling facilities were 12,000 ng/g and 180 ng/g, with median concentrations of 7500 ng/g and 85 ng/g, respectively...
July 11, 2023: Science of the Total Environment
https://read.qxmd.com/read/37441409/exploring-the-factors-influencing-consumer-behaviours-and-practices-towards-sustainable-weee-management-in-putrajaya-malaysia
#27
JOURNAL ARTICLE
Dhiya Durani Sofian Azizi, Marlia M Hanafiah, Kok Sin Woon, Haikal Ismail
The disposal practises and preferences of household waste from electrical and electronic equipment disposal (WEEE) are essential components in material flow analysis (MFA). Nevertheless, the synergistic of consumers' behaviours and preferences with the disposal of different WEEE has yet to be investigated in depth. This study examined several consumer features of WEEE management using a quantitative questionnaire survey, including consumers' disposal behaviours and preferences. As a Malaysian federal government administrative centre, and model of a contemporary and sustainable Malaysian city, Putrajaya was chosen as the study area...
June 2023: Heliyon
https://read.qxmd.com/read/37300404/c-si-pv-module-recycling-analysis-of-the-use-of-a-mechanical-pre-treatment-to-reduce-the-environmental-impact-of-thermal-treatment-and-enhance-materials-recovery
#28
JOURNAL ARTICLE
Priscila Silva Silveira Camargo, Andrey da Silva Domingues, João Pedro Guê Palomero, Marcelo Pilotto Cenci, Angela Cristina Kasper, Pablo Ribeiro Dias, Hugo Marcelo Veit
The current increase in the use of photovoltaic (PV) energy demands the search for solutions to recycle end-of-life modules. This study evaluated the use of a mechanical pre-treatment in the thermal recycling of c-Si crystalline PV modules, which were submitted to recycling routes to separate and concentrate the materials of interest. The first route was constituted by only thermal treatment, and the second route was constituted by a mechanical pre-treatment to remove the polymers from the backsheet, and subsequent thermal treatment...
June 10, 2023: Waste Management & Research
https://read.qxmd.com/read/37174242/optimal-decision-making-of-closed-loop-supply-chains-in-e-commerce-platform-considering-sales-cooperations-under-environmental-effects-and-weee-regulations
#29
JOURNAL ARTICLE
Manyi Tan, Fei Pei, Li He, Hong Cheng, Shupeng Huang
Nowadays, to achieve carbon neutrality, e-commerce platforms participate in the sales and recycling of electrical and electronic products in consideration of waste electrical and electronic equipment (WEEE) regulations and environmental effects. This study builds a Stackelberg game model for an e-commerce closed-loop supply chain (ECLSC) under different sales cooperation modes between a manufacturer of electrical and electronic products and an e-commerce platform. Reverse induction is used to obtain the optimal decision-making and profit of the ECLSC under three sales cooperation modes, considering the influence of environmental effects on optimal decision and objective functions...
May 4, 2023: International Journal of Environmental Research and Public Health
https://read.qxmd.com/read/37154778/investigating-metal-tributyl-phosphate-complexes-during-supercritical-fluid-extraction-of-the-ndfeb-magnet-using-density-functional-theory-and-x-ray-absorption-spectroscopy
#30
JOURNAL ARTICLE
Jiakai Zhang, Ning Chen, Valeria Morozova, Oleksandr Voznyy, Gisele Azimi
Supercritical fluid extraction (SCFE) is gaining significant interest as a green technology for the recycling of end-of-life waste electrical and electronic equipment (WEEE). Neodymium iron boron (NdFeB) magnets, which contain large quantities of critical rare-earth elements such as neodymium, praseodymium, and dysprosium, are widely used in wind turbines and electric/hybrid vehicles. Hence, they are considered a promising secondary resource for these elements when they reach their end-of-life. Previously, the SCFE process was developed for recycling WEEE, including NdFeB; however, the process mechanism remains unexplored...
May 8, 2023: Inorganic Chemistry
https://read.qxmd.com/read/37078423/towards-the-definition-of-weee-recycling-targets-in-ecuador-a-case-of-study-for-mobile-phones
#31
JOURNAL ARTICLE
Iván Vidal, Gabriela Sucozhañay, Melanie Haupt, Paúl Vanegas
The rise of consumption patterns of electrical and electronic equipment (EEE) and the generation of waste EEE (WEEE) has been strongly increasing globally. Recycling rates (RRs) are one of the main indicators for monitoring the progress towards a circular economy and establishing recovery and treatment schemes. For this reason, this study discusses the setting of recycling targets for WEEE in Ecuador, using mobile phones as a case study. Firstly, the generation of mobile phone waste from 2012 to 2018 is estimated based on literature review...
April 20, 2023: Waste Management & Research
https://read.qxmd.com/read/37058236/integration-of-electronic-waste-management-a-review-of-current-global-generation-health-impact-and-technologies-for-value-recovery-and-its-pertinent-management-technique
#32
REVIEW
Krithiga Palanisamy, Rampradheep Gobi Subburaj
The fast evolution of waste electrical and electronic equipment (WEEE) has developed into a prime environmental perturb in recent days. Today, electrical and electronic products merely become a needed part of people life's and professional lives. The whole process of e-waste contains an organized collection system, appropriate dismantling, and its treatment of recycling. The unparalleled hastening of e-waste and unceremonious discarding lead to an adverse impact on a country's development. Currently, challenges in e-waste have a lack of practical aid, poor structure, and insufficient economic support...
April 14, 2023: Environmental Science and Pollution Research International
https://read.qxmd.com/read/37012563/hybrid-leaching-of-tantalum-and-other-valuable-metals-from-tantalum-capacitor-waste
#33
JOURNAL ARTICLE
Asma Sikander, Steven Kelly, Kerstin Kuchta, Anika Sievers, Thomas Willner, Andrew S Hursthouse
We propose a novel integrated model for the recovery of tantalum from tantalum-rich waste using a combination of hydrometallurgical and bio-metallurgical processes. To this end, leaching experiments with heterotrophs (Pseudomonas putida, Bacillus subtilis and Penicillium simplicissimum) were carried out. The heterotrophic fungal strain leached manganese with an efficiency of 98%; however, no tantalum was detected in the leachate. An unidentified species did mobilise 16% tantalum in 28 days in an experiment with non-sterile tantalum capacitor scrap...
April 3, 2023: Environmental Science and Pollution Research International
https://read.qxmd.com/read/36995505/process-intensification-for-sustainable-extraction-of-metals-from-e-waste-challenges-and-opportunities
#34
REVIEW
Aaliya Javed, Jogender Singh
The electrical and electronic waste is expected to increase up to 74.7 million metric tons by 2030 due to the unparalleled replacement rate of electronic devices, depleting the conventional sources of valuable metals such as rare earth elements, platinum group metals, Co, Sb, Mo, Li, Ni, Cu, Ag, Sn, Au, and Cr. Most of the current techniques for recycling, recovering, and disposing of e-waste are inappropriate and therefore contaminate the land, air, and water due to the release of hazardous compounds into the environment...
March 30, 2023: Environmental Science and Pollution Research International
https://read.qxmd.com/read/36987169/debromination-of-waste-circuit-boards-by-reaction-in-solid-and-liquid-phases-phenomenological-behavior-and-kinetics
#35
JOURNAL ARTICLE
Juan A Conesa, Gerard Gandon-Ros, María F Gómez-Rico, Ignacio Aracil
The debromination of waste circuit boards (WCBs) used in computer motherboards and components has been studied with two different pieces of equipment. Firstly, the reaction of small particles (around one millimeter in diameter) and larger pieces obtained from WCBs was carried out with several solutions of K2 CO3 in small non-stirred batch reactors at 200-225 °C. The kinetics of this heterogeneous reaction has been studied considering both the mass transfer and chemical reaction steps, concluding that the chemical step is much slower than diffusion...
March 10, 2023: Polymers
https://read.qxmd.com/read/36934572/size-resolved-characterization-of-particles%C3%A2-10%C3%A2-nm-emitted-to-air-during-metal-recycling
#36
JOURNAL ARTICLE
Karin Lovén, Christina Isaxon, Erik Ahlberg, Marie Bermeo, Maria E Messing, Monica Kåredal, Maria Hedmer, Jenny Rissler
BACKGROUND: In the strive towards a circular economy, metal waste recycling is a growing industry. During the recycling process, particulate matter containing toxic and allergenic metals will be emitted to the air causing unintentional exposure to humans and environment. OBJECTIVE: In this study detailed characterization of particle emissions and workplace exposures were performed, covering the full size range from 10 nm to 10 µm, during recycling of three different material flows: Waste of electrical and electronic equipment (WEEE), metal scrap, and cables...
March 13, 2023: Environment International
https://read.qxmd.com/read/36850984/a-rapid-screening-method-for-the-detection-of-additives-in-electronics-and-plastic-consumer-products-using-ap-maldi-qtof-ms
#37
JOURNAL ARTICLE
Maurice de Jonker, Pim E G Leonards, Marja H Lamoree, Sicco H Brandsma
A novel method was developed and optimized for the fast-screening analysis of additives in electronics and plastic consumer products using atmospheric pressure matrix-assisted laser desorption ionization (AP-MALDI) coupled with a high-resolution quadrupole time-of-flight (qTOF) mass spectrometer (MS). To simplify sample preparation and increase sample throughput, an innovative 48 well graphene nanoplatelets (GNP) doped AP-MALDI target plate was developed. The GNP incorporated in the target plate fulfilled the role of the MALDI matrix and, therefore, sample extracts could be directly transferred to the AP-MALDI 48 well target plate and analyzed without a subsequent matrix addition...
January 23, 2023: Toxics
https://read.qxmd.com/read/36844893/product-lifecycle-information-flow-in-e-waste-handling-a-means-to-increase-circularity
#38
JOURNAL ARTICLE
Terje Andersen, Lise Lillebrygfjeld Halse
Electronic waste (e-waste) is a growing waste stream. In Europe, e-waste is regulated by the Waste Electrical and Electronic Equipment (WEEE) Directive. Each manufacturer or importer is responsible for the end-of-life (EoL) treatment of the equipment it handles, although this task is usually outsourced to producer responsibility organizations (PROs) that collect and treat the e-waste. The WEEE regime has been criticized for focusing on waste handling according to the traditional linear economy, while, in a circular economy, the goal is to eliminate waste...
February 22, 2023: Circ Econ Sustain
https://read.qxmd.com/read/36772010/removal-of-bromine-from-polymer-blends-with-a-composition-simulating-that-found-in-waste-electric-and-electronic-equipment-through-a-facile-and-environmentally-friendly-method
#39
JOURNAL ARTICLE
Maria Anna Charitopoulou, Lambrini Papadopoulou, Dimitris S Achilias
The increasing volume of plastics from waste electric and electronic equipment (WEEE) nowadays is of major concern since the various toxic compounds that are formed during their handling enhance the difficulties in recycling them. To overcome these problems, this work examines solvent extraction as a pretreatment method, prior to thermochemical recycling by pyrolysis. The aim is to remove bromine from some polymeric blends, with a composition that simulates WEEE, in the presence of tetrabromobisphenol A (TBBPA)...
January 31, 2023: Polymers
https://read.qxmd.com/read/36769929/selective-recovery-of-gold-from-electronic-waste-by-new-efficient-type-of-sorbent
#40
JOURNAL ARTICLE
Grzegorz Wójcik, Magdalena Górska-Parat, Zbigniew Hubicki, Karolina Zinkowska
Modular connectors are applied by computer users, and they can be metallic secondary sources containing metals such as gold and copper. Because gold is a micro-component, the solution obtained after the pin digestion contains a low concentration of gold(III) ions, and efficient and selective sorbent should be used for gold(III) ion recovery. The selective removal of small amounts of gold(III) from 0.001-6 M hydrochloric acid solutions using pure and solvent-impregnated macroporous polystyrene crosslinked with divinylbenzene sorbents (Purolite MN 202 and Cyanex 272) is presented...
January 18, 2023: Materials
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