Electrochemical Approaches for the Recovery of Metals from Electronic Waste: A Critical Review

Electronic waste (e-waste) management and recycling are gaining significant attention due to the presence of precious, critical, or strategic metals combined with the associated environmental burden of recovering metals from natural mines. Metal recovery from e-waste is being prioritized in metallur...

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Bibliographic Details
Published in:Recycling (Basel) 2021-09, Vol.6 (3), p.53
Main Authors: Rai, Varun, Liu, Daobin, Xia, Dong, Jayaraman, Yamuna, Gabriel, Jean-Christophe P.
Format: Article
Language:English
Subjects:
Chemical and Process Engineering
Chemical elements
Chemical Sciences
Depletion
e-waste
Electrochemistry
electrodeposition
Electrodes
Electrolytes
Electronic waste
electrowinning
Energy consumption
Engineering Sciences
Environmental impact
Extractive metallurgy
Inorganic chemistry
Ions
Leachates
Leaching
Material chemistry
Materials recovery
metal recovery
Metallurgy
Metals
Reagents
recycling
Solvents
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Summary:Electronic waste (e-waste) management and recycling are gaining significant attention due to the presence of precious, critical, or strategic metals combined with the associated environmental burden of recovering metals from natural mines. Metal recovery from e-waste is being prioritized in metallurgical extraction owing to the fast depletion of natural mineral ores and the limited geographical availability of critical and/or strategic metals. Following collection, sorting, and physical pre-treatment of e-waste, electrochemical processes-based metal recovery involves leaching metals in an ionic form in a suitable electrolyte. Electrochemical metal recovery from e-waste uses much less solvent (minimal reagent) and shows convenient and precise control, reduced energy consumption, and low environmental impact. This critical review article covers recent progress in such electrochemical metal recovery from e-waste, emphasizing the comparative significance of electrochemical methods over other methods in the context of an industrial perspective.
ISSN:2313-4321
2313-4321
DOI:10.3390/recycling6030053