E-waste

电子废物
  • 文章类型: Journal Article
    最近电子设备使用量的激增导致电子废物(E-waste)产生的显着增加,带来重大的环境挑战。这项研究旨在量化喀拉拉邦的电子废物库存并制定全面的管理计划。利用2017年至2020年的销售数据,并根据电气和电子设备(EEE)项目的“平均”或“使用寿命结束”持续时间估算电子废物的产生量,分析预测了大量的电子垃圾。关键假设包括将销售数据与电子废物产生相关联,以及根据EEE项目类型和销售数字估算电子废物数量的准则。预计2028-2029年电子废物产生量最高,估计为97,541吨,这对国家的管理战略至关重要。为了应对这一挑战,该研究提出了一项综合环境管理计划,该计划整合了减少的原则,重用,并将回收(3R)纳入其核心战略。该计划包括在全州建立78个收集单位,根据Taluk(一个地区的细分)人口进行战略分配,以确保有效的电子废物收集和回收可重复使用的物品。此外,这项研究概述了全州需要273个回收单位,由于人口密度高,Malapuram区需要最多的单位。该计划强调高效的电子废物收集,隔离,和回收,促进负责任的消费和节约资源。这项研究为当地的电子废物管理提供了一个“从摇篮到坟墓”的框架,区域,和国家层面,作为污染控制委员会的宝贵资源,监管机构,法定机构,和研究机构一样。
    The recent surge in electronic device usage has led to a notable rise in electronic waste (E-waste) generation, presenting significant environmental challenges. This study aims to quantify Kerala\'s E-waste inventory and formulate a comprehensive management plan. Utilizing sales data from 2017 to 2020 and estimating E-waste generation based on \"average\" or \"end-of-life\" durations of electrical and electronic equipment (EEE) items, the analysis forecasts substantial E-waste quantities. Key assumptions include correlating sales data with E-waste generation and utilizing guidelines for estimating E-waste quantities based on EEE item types and sales figures. The highest E-waste generation is predicted for the years 2028-2029, estimated at 97,541 tonnes, which is crucial for the state\'s management strategy. To address this challenge, the study proposes a comprehensive environmental management plan that integrates the principles of reduce, reuse, and recycle (3R) into its core strategies. The plan includes establishing 78 collection units across the state, strategically allocated based on the Taluk (a sub-division of a district) population, to ensure efficient E-waste collection and recovery of reusable items. Additionally, the study outlines the need for 273 recycling units statewide, with Malappuram district requiring the most units due to its high population density. The plan emphasizes efficient E-waste collection, segregation, and recycling, promoting responsible consumption and resource conservation. The study furnishes a \"cradle-to-grave\" framework for the management of E-waste at local, regional, and national levels, serving as a valuable resource for pollution control boards, regulatory bodies, statutory bodies, and research organizations alike.
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  • 文章类型: Journal Article
    通过哥伦比亚的一个国际合作项目,进行了防止《斯德哥尔摩公约》(POP-BFR)列为持久性有机污染物的溴化阻燃剂释放的研究。实施的六个废弃电气和电子设备(WEEE)管理设施:1)按产品类型和颜色(黑色,白色,和其他;此后称为色品),2)取样测试产品及其塑料部分(称为集,按聚合物类型分开),3)监测质量,溴和锑含量通过手持式X射线荧光(XRF)和POP-BFR如多溴联苯醚(PBDEs)通过气相色谱和质谱(GC-MS),和4)根据使用电气和电子设备指令(RoHS)危险阈值1000mg∑PBDEs/kg的类别进行区别对待。该方案导致了WEEE管理方法的提出,称为“色品方法”。对994,230种产品进行了管理,分为222种色产品,从中分析了77项:低于RoHS危险程度(BRH)的50项,16高于RoHS危险性(ARH),和11个未知的RoHS危险(URH)。使用溴和锑含量的XRF指示剂可以排除BRH色素产品中的污染;但是,分类仍然需要GC-MS。一个ARH塑料样品有3620mg∑PBDEs/kg,而在BRH塑料样品中没有发现POP-BFR。色产品方法的实施追踪了153.6吨ARH塑料。对BRH塑料组合物进行了估算,并将其用于中试规模的闭环经济活动。色产品方法似乎有望避免POP-BFR释放并促进可回收电子废塑料的升级循环。
    Research to prevent releases of brominated flame retardants listed as persistent organic pollutants by the Stockholm Convention (POP-BFRs) was conducted through an international cooperation project in Colombia. Six waste electrical and electronic equipment (WEEE) management facilities implemented: 1) sorting e-waste by product type and color (black, white, and other; henceforth called chromoproducts), 2) sampling test products and their plastic fraction (called sets, separated by polymer type), 3) monitoring mass, bromine and antimony contents by hand-held X-ray fluorescence (XRF) and POP-BFRs such as polybrominated diphenyl ethers (PBDEs) by gas chromatography and mass spectrometry (GC-MS), and 4) differentiated treatment according to categories that used the Restriction of Hazardous Substances in Electrical and Electronic Equipment Directive (RoHS) hazardousness threshold of 1000 mg ∑PBDEs/kg. This scheme led to the proposal of a methodology for WEEE management called the \"chromoproduct approach\". 994,230 products were managed and grouped into 222 chromoproducts, from which 77 were analyzed: 50 below RoHS hazardousness (BRH), 16 above RoHS hazardousness (ARH), and 11 unknown RoHS hazardousness (URH). XRF indicators using bromine and antimony contents could rule out pollution in BRH chromoproducts; however, categorization still required GC-MS. One ARH plastics sample had 3620 mg ∑PBDEs/kg, while no POP-BFRs were found in the BRH plastics sample. The implementation of the chromoproduct approach traced 153.6 tonnes of ARH plastics. BRH plastics composition was estimated and used in a pilot-scale closed-loop economic activity. The chromoproduct approach seems promising for avoiding POP-BFR releases and promoting the upcycling of recyclable e-waste plastics.
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  • 文章类型: Journal Article
    数字电子产品的进步带来了小巧便携的小工具,用技术改变人机界面。对新的小型设备的需求信息和电信技术(小型IT),具有较短的寿命,比如智能手机和笔记本电脑,创造电子资源的流动和积累。其中包括显示出城市采矿和循环经济潜力的贵金属。要了解建立改进的回收利用的程度,再利用和修复系统,通过调查进行数据收集,宾的观察和社会实验。这些方法使我们能够分析股票和流量,确定行为实践和地图收集基础设施。大约80%的国内小型IT股票处于休眠状态,这意味着它们可以直接重复使用或容易修复。结果显示,有四个障碍阻止公民交出未使用的小型IT:设备被保留为备用,它们包含情感价值,公民对收集后的数据保密问题持怀疑态度,并且认为回收工作很努力。加强循环的驱动因素是:改善电子垃圾基础设施,引入经济激励措施,提高对冬眠股票环境影响的认识。一个更值得信赖和合法的管理系统有望提供个人数据的安全性和机密性,并提供符合适当地方处置其贵重物品的公民期望的质量。
    Advances in digital electronics delivered small and portable gadgets, changing human interface with technology. Demand for new small devices of Information and Telecommunication Technology (small-IT) that have a short lifespan, like smartphones and laptops, creates flows and accumulation of electronic resources. These include precious metals that show potential for Urban Mining and Circular Economy. To find out the extent of setting up an improved recycling, reuse and repair system, data collection was conducted through surveys, bin observations and social experiments. These methods enabled us to analyse stocks and flows, identify behavioural practices and map collection infrastructure. About 80% of domestic small-IT stocks are hibernated, meaning they could be directly reused or easily repaired. Results show four barriers that keep citizens from handing in their unused small-IT: Devices are kept as back-up, they contain sentimental value, citizens are suspicious of post-collection data confidentiality issues and there is a perceived high effort to recycle. Drivers to enhance circularity are: improving e-waste infrastructure, introducing economic incentives and raising awareness on environmental impacts of hibernated stocks. A more trustworthy and legitimate management system is expected to deliver safety and confidentiality of personal data and provide the quality that fits the expectations of citizens of a proper place to dispose of their valuable items.
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  • 文章类型: Journal Article
    背景技术射频识别(RFID)技术已经将其自身确立为用于识别所有人类和商业领域中的各种对象的有效工具。有许多研究描述了这种技术的使用。然而,科学文章仅略微解决了回收或重复使用射频标识符的问题。欧盟立法将射频标识符定义为电子废物。本文介绍了在斯洛伐克和捷克共和国领土的选定物流中心和快递公司中使用射频标识符所造成的环境负担。在流行病的背景下,随着对产品和快递服务的需求不断增加,这项研究及其相关性已成为热门话题。为了以相关方式获得上述环境负担的水平,对选定物流中心的运输单位(货盘)和射频标识符的流通进行了分析。研究结果表明,选定的物流中心每年从放置在接收托盘上的射频标识符中产生5.7吨电子废物。电子废物中存在139千克金属。研究的部分结果被应用于电子商务领域。本文的结论致力于描述在物流中使用射频标识符减轻环境负担的可能性。
    Radio Frequency Identification (RFID) technology has established itself as an effective tool for identifying various objects in all human and business areas. There are many studies describing the use of this technology. However, scientific articles only marginally address the issue of recycling or reusing radio frequency identifiers. Radio frequency identifiers are defined as electronic waste by European Union legislation. This article deals with the environmental burden resulting from the use of radio frequency identifiers in a selected logistics centre and courier company in the Slovak and Czech Republic territories. The research and its relevance have become topical in the context of pandemics and with the increasing demand for products and courier services. In order to access the level of the above-mentioned environmental burden in a relevant way, an analysis of the circulation of transport units (pallets) and radio frequency identifiers in the selected logistics centre was carried out. The research results showed that the selected logistics centre generated annually 5.7 t of the e-waste from radio frequency identifiers placed on received pallets. The amount of 139 kg of metal was present in the e-waste quantity. The partial results of the research were applied to the e-commerce area. This article\'s conclusion is dedicated to the characterization of possibilities of reducing the environmental burden from the use of radio frequency identifiers in logistics.
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  • 文章类型: Journal Article
    电子废弃物(e-waste)因其体积庞大,已成为环境问题的主要原因之一,高生成率和有毒环境负担。最近的估计显示,电子垃圾的产生量每年约为5400万吨,到2030年将达到每年约7500万吨。在这份手稿中,最先进的技术和隔离技术,电子废物的回收和再循环,特别关注电子塑料和电子金属的价值方面,这些方面得到了严格审查。介绍了有关环境方面和法规/法规的历史和见解,包括在不久的将来可以用于电子废物管理的法规。通过物料流分析,在科威特国实施此类技术以从电子废物中回收材料和能源的前景仍然缺乏废物管理的基础设施。资料表明,科威特在废物积累方面存在重大问题。据估计,科威特的电子废物(没有积累或积压)以67,000tpa的速度产生,广播电子产品的进口量约为19,428吨。在审查了潜在回收塑料的经济因素后,来自科威特广播设备的铁和玻璃作为电子垃圾,根据其价值估计,每年的总收入为399,729美元。这笔收入将为其他电子废物和燃料回收选择以及环境效益和向循环经济的转变打开企业的前景。
    Electronic waste (e-waste) has become one of the major causes of environmental concerns due to its large volume, high generation rate and toxic environmental burdens. Recent estimates put e-waste generation at about 54 million tonnes per annum with figures reaching approximately 75 million tonnes per annum by 2030. In this manuscript, the state-of-the-art technologies and techniques for segregation, recovery and recycling of e-waste with a special focus on the valorisation aspects of e-plastics and e-metals which are critically reviewed. A history and insight into environmental aspects and regulation/legislations are presented including those that could be adopted in the near future for e-waste management. The prospects of implementing such technologies in the State of Kuwait for the recovery of materials and energy from e-waste where infrastructure is lacking still for waste management are presented through Material Flow Analysis. The information showed that Kuwait has a major problem in waste accumulation. It is estimated that e-waste in Kuwait (with no accumulation or backlog) is generated at a rate of 67,000 tpa, and the imports of broadcasting electronics generate some 19,428 tonnes. After reviewing economic factors of potential recovered plastics, iron and glass from broadcasting devices in Kuwait as e-waste, a total revenue of $399,729 per annum is estimated from their valorisation. This revenue will open the prospect of ventures for other e-waste and fuel recovery options as well as environmental benefits and the move to a circular economy.
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  • 文章类型: Journal Article
    大部分的电气和电子废物没有被回收利用,其成分预计会释放到环境中,包括稀土元素镧(La),这在水生系统中已经有报道。此外,考虑到气候变化因素,如预测的温度升高,水生生物对这些稀有元素的敏感性可能会改变。鉴于此,本研究旨在评估温度对贻贝中La衍生作用的相关性。在两个不同温度(17和22°C)下暴露于0(对照)和10μg/LLa的生物体中评估了几种生物标志物和La的生物积累。结果表明,温度不影响贻贝中La的生物积累。然而,暴露于La导致代谢能力降低和生物转化酶活性增强,作为贻贝的一种可能的防御行为,以避免La的积累和毒性。然而,抗氧化剂防御也被抑制,导致脂质过氧化(LPO)水平增加。仅变暖似乎会导致代谢中断,这被视为酶活性和蛋白质羰基化(PC)水平降低。La同时暴露和温度升高会对贻贝产生综合影响,当他们指责代谢抑郁症时,生物转化防御激活,抗氧化能力降低,和更高的细胞损伤。总的来说,这项研究强调了进行环境风险评估研究的必要性,通过考虑在相关浓度下出现的污染物暴露,目前和预测的气候变化情景。
    Most of the electric and electronic waste is not recycled and the release of its components into the environment is expected, including the rare-earth element Lanthanum (La), which has already been reported in the aquatic systems. Furthermore, considering climate change factors such as the predicted increase in temperature, the susceptibility of aquatic organisms to these rare elements may be modified. In light of this, the present study aimed to evaluate the relevance of temperature on La-derived effects in the mussel Mytilus galloprovincialis. Several biomarkers and La bioaccumulation were assessed in organisms exposed to 0 (control) and 10 μg/L of La at two distinct temperatures (17 and 22 °C) for 28 days. Results showed that temperature did not influence La bioaccumulation in mussels. However, exposure to La resulted in a decreased metabolic capacity and an enhancement of biotransformation enzymes activity, as a possible defense behavior of mussels to avoid La accumulation and toxicity. Nevertheless, antioxidant defenses were also inhibited leading to increased lipid peroxidation (LPO) levels. Warming alone seemed to cause a metabolic shutdown seen as reduced enzyme activities and protein carbonylation (PC) levels. Simultaneous La exposure and temperature rise caused combined effects on mussels, as they accused metabolic depression, biotransformation defenses activation, antioxidant capacity reduction, and higher cellular damage. Overall, this study highlights the need to perform environmental risk assessment studies, by considering emerging contaminants exposures at relevant concentrations, both at present and forecasted climate change scenarios.
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  • 文章类型: Journal Article
    Considering that electronic wastes (e-wastes) have been recently recognized as a potent environmental and human threat, the present study aimed to assess the potential risk of personal computer motherboards (PCMBs) leaching into aquatic media, following a real-life scenario. Specifically, PCMBs were submerged for 30 days in both distilled water (DW) and artificial seawater (ASW). Afterwards, PCMBs leachates were chemically characterized (i.e., total organic carbon, ions, and trace elements) and finally used (a) for culturing freshwater (Chlorococcum sp. and Scenedesmus rubescens) and saltwater (Dunaliella tertiolecta and Tisochrysis lutea) microalgae for 10 days (240 h), (b) as the exposure medium for mussel Mytilus galloprovincialis (96 h exposure), and (c) for performing the Cytokinesis Block Micronucleus (CBMN) assay in human lymphocytes cultures. According to the results, PCMBs could mediate both fresh- and marine algae growth rates over time, thus enhancing the cytotoxic, oxidative, and genotoxic effects in the hemocytes of mussels (in terms of lysosomal membrane impairment, lipid peroxidation, and NO content and micronuclei formation, respectively), as well as human lymphocytes (in terms of MN formation and CBPI values, respectively). The current findings clearly revealed that PCMBs leaching into the aquatic media could pose detrimental effects on both aquatic organisms and human cells.
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  • 文章类型: Journal Article
    Waste solar photovoltaic (PV) panels are considered as one of the fastest-growing future waste streams under the category of large electronic waste (e-waste). The lifespan of solar panels varies from 20 to 30 years, and an appropriate reverse logistics network design is essential to manage the waste stream efficiently once their lifetime expires. Mixed-integer programming-based RL model is proposed in this paper for New South Wales, Australia that minimizes the overall cost by identifying optimal locations and sizing of the collection points while determining optimal capacities for recycling facilities. Using the historical data (2001-2017) on the installed capacity of solar panels in the state, the potential waste generation (at council-level) is estimated and optimized solutions are proposed for the year 2047. The results of the study show that the highest waste solar PV will be generated at Murrumbidgee, Berrigan, Balranald, and Bogan councils. Out of 129 councils in the state, the model identifies 78 optimized-locations of the collection points that would be required in the councils. In the councils of Newcastle, Narrandera and Wagga Wagga, three major recycling facilities would need to be established. This is the first systematic attempt in designing an optimized RL network in Australia focusing on waste solar PV. Policy-makers will find this research highly valuable in decision-making on local recycling infrastructure development.
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  • 文章类型: Journal Article
    本文研究了授权电子垃圾收集者的循环经济潜力,拆解者,和马哈拉施特拉邦的回收商。该研究确定了该地区与电子垃圾收集相关的驱动因素和障碍。此外,它探索了处理技术,包括拆卸,回收,和废料处理。这是通过孟买一家回收公司的案例研究来完成的,马哈拉施特拉邦.基于问卷调查的调查用于研究电子垃圾处理单元。问卷的定性分析表明,缺乏对环境影响的认识是电子垃圾收集的最大制约因素,数据安全是加强电子垃圾收集的最关键驱动因素。案例研究表明,电子垃圾的数量和类型比处理单元和收集点之间的距离更为重要。它揭示了在电子废物收集者和废物持有者之间建立信任的主要因素是数据安全。
    The paper investigates the potential of circular economy of authorized e-waste collectors, dismantlers, and recyclers of Maharashtra. The study determines the drivers and barriers associated with e-waste collection in the region. Furthermore, it explores the handling techniques including dismantling, recycling, and scrap disposal. This is done through a case study of a recycling company based in Mumbai, Maharashtra. A questionnaire-based survey is used to study e-waste processing units. The qualitative analysis of the questionnaire shows that lack of awareness of environmental impact is the greatest constraint in the collection of e-waste and data security is the most crucial driver for enhancing the collection of e-waste. The case study reveals that the quantity and type of e-waste are more important than the distance between the processing unit and the collection point. It discloses that the primary factor for building trust between e-waste collectors and waste holders is data security.
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  • 文章类型: Journal Article
    With the technological advances and economic development, the multiplicity and wide variety of applications of electrical and electronic equipment have increased, as well as the amount of end-of-life products (waste of electrical and electronic equipment, WEEE). Accompanying their increasing application, there is an increasing risk to aquatic ecosystems and inhabiting organisms. Among the most common elements present in WEEE are rare earth elements (REE) such as Dysprosium (Dy). The present study evaluated the metabolic and oxidative stress responses of mussels Mytilus galloprovincialis exposed to an increasing range of Dy concentrations, after a 28 days experimental period. The results obtained highlighted that Dy was responsible for mussel\'s metabolic increase associated with glycogen expenditure, activation of antioxidant and biotransformation defences and cellular damage, with a clear loss of redox balance. Such effects may greatly impact mussel\'s physiological functions, including reproduction capacity and growth, with implications for population conservation. Overall the present study pointed out the need for more research on the toxic impacts resulting from these emerging pollutants, especially towards marine and estuarine invertebrate species.
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