Abstract
Waste electrical and electronic equipment (e-waste) is the most rapidly growing waste stream in the world, and the majority of the residues are openly disposed of in developing countries. Waste printed circuit boards (WPCBs) make up the major portion of e-waste, and their informal recycling can cause environmental pollution and health risks. Furthermore, the conventional disposal and recycling techniques—mechanical treatments used to recover valuable metals, including copper—are not sustainable in the long term. Chemical leaching is rapid and efficient but causes secondary pollution. Bioleaching is a promising approach, eco-friendly and economically feasible, but it is slower process. This review considers the recycling potential of microbes and suggests an integrated bioleaching approach for Cu extraction and recovery from WPCBs. The proposed recycling system should be more effective, efficient and both technically and economically feasible.
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This work was financially supported by the National Key Technologies R&D Program (2014BAC03B04) and the National Natural Science Foundation of China (21177069, 71373141).
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Awasthi, A.K., Zeng, X. & Li, J. Integrated bioleaching of copper metal from waste printed circuit board—a comprehensive review of approaches and challenges. Environ Sci Pollut Res 23, 21141–21156 (2016). https://doi.org/10.1007/s11356-016-7529-9
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DOI: https://doi.org/10.1007/s11356-016-7529-9