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Bioleaching: A Sustainable Resource Recovery Strategy for Urban Mining of E-waste

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Microbial Technology for Sustainable E-waste Management

Abstract

The continuous and prodigious consumer requirement of electrical and electronic equipment along with their expedited product obsolescence rate owing to the fast advancements in technology has resulted in rise in generation of waste electrical and electronic equipment across the globe. Majority of e-waste contains complex mixture of heavy metals, plastics, refractory oxides, halogens and combustible substances that impose several health hazard and environmental challenges. E-waste also consists of various valuable metals and thus its recycling is not merely significant for waste management but also for the recovering of these valuable metals. Currently, conventional hydrometallurgical and pyrometallurgical methods are being employed for extraction of metals, but the high cost and toxic intermediates are the limitations of these methods. Biotechnological methods are exclusively exploited for metal recovery and are emerging as sustainable and environment-friendly methods. Bioleaching involves microbes for facilitating leaching of minerals and is more economical in comparison with conventional metallurgic treatments owing to lower operational and energy demand. Thus, this chapter provides a comprehensive insight into biological methods of extraction of valuable metals from e-waste. In addition, advanced and hybrid recycling technologies that are being studied are also discussed.

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Correspondence to Geeta Bhandari .

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Bhandari, G., Gupta, S., Chaudhary, P., Chaudhary, S., Gangola, S. (2023). Bioleaching: A Sustainable Resource Recovery Strategy for Urban Mining of E-waste. In: Debbarma, P., Kumar, S., Suyal, D.C., Soni, R. (eds) Microbial Technology for Sustainable E-waste Management. Springer, Cham. https://doi.org/10.1007/978-3-031-25678-3_10

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