A Review on Chemical versus Microbial Leaching of Electronic Wastes with Emphasis on Base Metals Dissolution

There is a growing interest in electronic wastes (e-wastes) recycling for metal recovery because the fast depletion of worldwide reserves for primary resources is gradually becoming a matter of concern. E-wastes contain metals with a concentration higher than that present in the primary ores, which...

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Autores principales: Srabani Mishra, Sandeep Panda, Ata Akcil, Seydou Dembele, Ismail Agcasulu
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:b3a104f10f9f4a9da6d2f926d72084342021-11-25T18:26:38ZA Review on Chemical versus Microbial Leaching of Electronic Wastes with Emphasis on Base Metals Dissolution10.3390/min111112552075-163Xhttps://doaj.org/article/b3a104f10f9f4a9da6d2f926d72084342021-11-01T00:00:00Zhttps://www.mdpi.com/2075-163X/11/11/1255https://doaj.org/toc/2075-163XThere is a growing interest in electronic wastes (e-wastes) recycling for metal recovery because the fast depletion of worldwide reserves for primary resources is gradually becoming a matter of concern. E-wastes contain metals with a concentration higher than that present in the primary ores, which renders them as an apt resource for metal recovery. Owing to such aspects, research is progressing well to address several issues related to e-waste recycling for metal recovery through both chemical and biological routes. Base metals, for example, Cu, Ni, Zn, Al, etc., can be easily leached out through the typical chemical (with higher kinetics) and microbial (with eco-friendly benefits) routes under ambient temperature conditions in contrast to other metals. This feature makes them the most suitable candidates to be targeted primarily for metal leaching from these waste streams. Hence, the current piece of review aims at providing updated information pertinent to e-waste recycling through chemical and microbial treatment methods. Individual process routes are compared and reviewed with focus on non-ferrous metal leaching (with particular emphasis on base metals dissolution) from some selected e-waste streams. Future outlooks are discussed on the suitability of these two important extractive metallurgical routes for e-waste recycling at a scale-up level along with concluding remarks.Srabani MishraSandeep PandaAta AkcilSeydou DembeleIsmail AgcasuluMDPI AGarticleelectronic wasterecyclingchemical leachingbioleachingnon-ferrous metal dissolutionwaste printed circuit boardsMineralogyQE351-399.2ENMinerals, Vol 11, Iss 1255, p 1255 (2021)
institution DOAJ
collection DOAJ
language EN
topic electronic waste
recycling
chemical leaching
bioleaching
non-ferrous metal dissolution
waste printed circuit boards
Mineralogy
QE351-399.2
spellingShingle electronic waste
recycling
chemical leaching
bioleaching
non-ferrous metal dissolution
waste printed circuit boards
Mineralogy
QE351-399.2
Srabani Mishra
Sandeep Panda
Ata Akcil
Seydou Dembele
Ismail Agcasulu
A Review on Chemical versus Microbial Leaching of Electronic Wastes with Emphasis on Base Metals Dissolution
description There is a growing interest in electronic wastes (e-wastes) recycling for metal recovery because the fast depletion of worldwide reserves for primary resources is gradually becoming a matter of concern. E-wastes contain metals with a concentration higher than that present in the primary ores, which renders them as an apt resource for metal recovery. Owing to such aspects, research is progressing well to address several issues related to e-waste recycling for metal recovery through both chemical and biological routes. Base metals, for example, Cu, Ni, Zn, Al, etc., can be easily leached out through the typical chemical (with higher kinetics) and microbial (with eco-friendly benefits) routes under ambient temperature conditions in contrast to other metals. This feature makes them the most suitable candidates to be targeted primarily for metal leaching from these waste streams. Hence, the current piece of review aims at providing updated information pertinent to e-waste recycling through chemical and microbial treatment methods. Individual process routes are compared and reviewed with focus on non-ferrous metal leaching (with particular emphasis on base metals dissolution) from some selected e-waste streams. Future outlooks are discussed on the suitability of these two important extractive metallurgical routes for e-waste recycling at a scale-up level along with concluding remarks.
format article
author Srabani Mishra
Sandeep Panda
Ata Akcil
Seydou Dembele
Ismail Agcasulu
author_facet Srabani Mishra
Sandeep Panda
Ata Akcil
Seydou Dembele
Ismail Agcasulu
author_sort Srabani Mishra
title A Review on Chemical versus Microbial Leaching of Electronic Wastes with Emphasis on Base Metals Dissolution
title_short A Review on Chemical versus Microbial Leaching of Electronic Wastes with Emphasis on Base Metals Dissolution
title_full A Review on Chemical versus Microbial Leaching of Electronic Wastes with Emphasis on Base Metals Dissolution
title_fullStr A Review on Chemical versus Microbial Leaching of Electronic Wastes with Emphasis on Base Metals Dissolution
title_full_unstemmed A Review on Chemical versus Microbial Leaching of Electronic Wastes with Emphasis on Base Metals Dissolution
title_sort review on chemical versus microbial leaching of electronic wastes with emphasis on base metals dissolution
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/b3a104f10f9f4a9da6d2f926d7208434
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