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Sustainable options for mitigation of major toxicants originating from electronic waste

机译：缓解源自电子废物的主要有毒物质的可持续选择

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摘要

Electronic waste (e-waste) is an emerging source of toxic contaminants in the environment. It is considered to be hazardous as it is known to contain toxic metals, viz. Cr, Ni, Zn, Pb and Hg in huge amounts and organic pollutants, viz. polychlorinated biphenyls, polybrominated diphenyl ethers and tetrabromobisphenol-A. Rapid development and changes in lifestyle have resulted in a huge pile-up of e-waste and its continuous production further makes the situation troublesome. E-waste is usually processed informally for recovery of precious metals. During this process, a large amount of toxic metals, organic compounds and secondary organic pollutants such as polyaromatic hydrocarbons and dioxin enters into the environment. Disposal of raw or processed e-waste in landfills also results in contamination of soil and groundwater through leachate. Considering the present environmental condition along with toxic and persistence nature of pollutants originating from e-waste, their remediation using sustainable methods is highly desirable. This article provides an overview of different bioremediation options used and available for remediation of e-waste-related pollutants. Advantages and limitations of these methods along with their applicability in restoration of contaminated system are also highlighted.
机译：电子废物（电子废物）是环境中新兴的有毒污染物来源。它被认为是有害的，因为已知其中含有有毒金属。大量的Cr，Ni，Zn，Pb和Hg和有机污染物，即。多氯联苯，多溴联苯醚和四溴双酚-A。快速发展和生活方式的改变导致电子垃圾的大量堆积，其持续生产进一步使情况变得麻烦。电子废物通常被非正式地处理以回收贵金属。在此过程中，大量有毒金属，有机化合物和次要有机污染物（如聚芳烃和二恶英）进入环境。将未处理或加工过的电子废物处置在垃圾填埋场中还会导致渗滤液污染土壤和地下水。考虑到当前的环境条件以及源自电子废物的污染物的有毒和持久性，使用可持续方法进行补救是非常必要的。本文概述了用于电子废物相关污染物的各种不同的生物修复方法。这些方法的优点和局限性以及它们在受污染系统修复中的适用性也得到了强调。

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