The brighter side of e-waste—a rich secondary source of metal

This article details the electronic waste (e-waste) generation, their composition, health, and environment hazards, and legal rules for disposal as well as their significance as a potential secondary source of metals and other components. Moreover, valuable metal extraction technologies from the e-w...

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Bibliographic Details
Published in:Environmental science and pollution research international 2021-03, Vol.28 (9), p.10503-10518
Main Authors: Tipre, Devayani R., Khatri, Bhumika R., Thacker, Shital C., Dave, Shailesh R.
Format: Article
Language:English
Subjects:
Ambient temperature
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Cell Phone
Circuit boards
Earth and Environmental Science
Ecotoxicology
Electronic waste
Electronic Waste - analysis
Environment
Environmental Chemistry
Environmental Health
Environmental science
Environmental valuation
Feature extraction
Health hazards
Hydrometallurgy
Maintenance costs
Materials recovery
Metals
Microorganisms
Pyrometallurgy
Recycling
Review Article
Waste Water Technology
Water
Water Management
Water Pollution Control
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Summary:This article details the electronic waste (e-waste) generation, their composition, health, and environment hazards, and legal rules for disposal as well as their significance as a potential secondary source of metals and other components. Moreover, valuable metal extraction technologies from the e-waste are reviewed in general and waste cell phones in particular. E-waste is nowadays preferentially used for recovery of metals mainly from printed circuit boards (PCBs). Different techniques, namely pyrometallurgy, hydrometallurgy, and biohydrometallurgy used for metal extraction from e-waste are swotted. The economic and environmental valuation features of these technologies are also included. Compared to other methods, biohydrometallurgy is the method of choice, as in it natural components like air and water are used, has low operating and maintenance cost, and operate at ambient temperature and pressure. Microbial aspects of metal extraction from e-waste are summarized.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-020-12022-1