Recent advances on hydrometallurgical recovery of critical and precious elements from end of life electronic wastes-a review


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SETHURAJAN M., VAN HULLEBUSCH E. D. , FONTANA D., Akcil A., DEVECİ H. , BATINIC B., ...More

CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY, vol.49, no.3, pp.212-275, 2019 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Review
  • Volume: 49 Issue: 3
  • Publication Date: 2019
  • Doi Number: 10.1080/10643389.2018.1540760
  • Title of Journal : CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
  • Page Numbers: pp.212-275
  • Keywords: Critical raw materials, Critical and precious metals, E-Wastes, Hydrometallurgy, Metal selective recovery, Rare earth elements, WEEEs, PRINTED-CIRCUIT BOARDS, LITHIUM-ION BATTERIES, RARE-EARTH-METALS, RAW-MATERIAL RECOVERY, SOLVENT-EXTRACTION, VALUABLE METALS, MOBILE PHONE, FLUORESCENT LAMPS, SULFURIC-ACID, NDFEB MAGNETS

Abstract

Waste electrical and electronic equipment (WEEE) contains economically significant levels of precious, critical metals and rare earth elements, apart from base metals and other toxic compounds. Recycling and recovery of critical elements from WEEEs using a cost-effective technology are now one of the top priorities in metallurgy due to the rapid depletion of their natural resources. More than 150 publications on WEEE management, leaching and recovery of metals from WEEE were reviewed in this work, with special emphasize on the recent research (2015-2018). This paper summarizes the recent progress regarding various hydrometallurgical processes for the leaching of critical elements from WEEEs. Various methodologies and techniques for critical elements selective recovery (using ionic liquids, solvent extraction, electrowinning, adsorption, and precipitation) from the WEEEs leachates are discussed. Future prospects regarding the use of WEEEs as secondary resources for critical raw materials and its techno-economical and commercial beneficiaries are discussed.