AI Article Synopsis
- E-waste is recognized as a valuable source for recycling metals, which aligns with the concepts of urban mining and a circular economy.
- The study reviews various metal recycling processes and pre-treatment methods, highlighting advancements and evaluating them based on life cycle assessments, economic viability, and industrial-scale applications.
- It concludes that integrated metal recovery techniques are more efficient and environmentally friendly than single methods, and encourages the development of biometallurgical, electrochemical, and supercritical fluid extraction methods for better sustainability.
Article Abstract
E-wastes being potential sources of numerous valuable metals are promoted to undergo recycling and recovery under the umbrella of urban mining and circular economy. Thus, the present study provides a critical review of the technological details of different metal recycling processes, pre-treatment methods, and the advancements made in these techniques. Critical evaluation of different metal recovery techniques has also been presented based on the available life cycle assessment (LCA), techno-economic, and industrial-scale studies. The study revealed that the integrated metal recovery techniques serve better in terms of recovery efficiency and environmental performance than any single recovery technique. Also, scaling up of biometallurgical, electrochemical, and super critical fluid extraction methods needs to be promoted due to their better environmental performances.
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| http://dx.doi.org/10.1016/j.jenvman.2022.115887 | DOI Listing |
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