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Title: Comprehensive process for the recovery of value and critical materials from electronic waste

Journal Article · · Journal of Cleaner Production

The development of technologies that contribute to the proper disposal and treatment of electronic waste is not just an environmental need, but an opportunity for the recovery and recycle of valuable metals and critical materials. Value elements in electronic waste include gold, palladium, silver, copper, nickel, and rare earth elements (RE). Here, we present the development of a process that enables efficient recycling of metals from scrap mobile electronics. An electro recycling (ER) process, based on the regeneration of Fe3+ as a weak oxidizer, is studied for the selective recovery of base metals while leaving precious metals for separate extraction at reduced chemical demand. A separate process recovers rare earth oxides from magnets in electronics. Furthermore, recovery and extraction efficiencies ca. 90 % were obtained for the extraction of base metals from the non-ferromagnetic fraction in the two different solution matrices tested (H2SO4, and HCl). The effect of the pre-extraction of base metals in the increase of precious metals extraction efficiency was verified. On the other hand, the extraction of rare earths from the ferromagnetic fraction, performed by means of anaerobic extraction in acid media, was assessed for the selective recovery of rare earths. We developed a comprehensive flow sheet to process electronic waste to value products.

Research Organization:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC07-05ID14517
OSTI ID:
1357503
Alternate ID(s):
OSTI ID: 1341153
Report Number(s):
INL/JOU-15-36947; PII: S0959652616301299
Journal Information:
Journal of Cleaner Production, Vol. 125, Issue C; ISSN 0959-6526
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 67 works
Citation information provided by
Web of Science

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Cited By (7)

Thermodynamics and crystallization kinetics of REEs in CaO–SiO 2 –Ce 2 O 3 system journal December 2019
Sustainable Development of Corrosion Inhibitors from Electronic Scrap: Synthesis and Electrochemical Performance journal December 2019
Economic Assessment for Recycling Critical Metals From Hard Disk Drives Using a Comprehensive Recovery Process journal June 2017
Transforming Waste Printed Circuit Boards and Compact Discs for the Synthesis of Valuable Ferrosilicon Alloy journal October 2018
Advanced Recovery Techniques for Waste Materials from IT and Telecommunication Equipment Printed Circuit Boards journal December 2019
Advances and challenges of green materials for electronics and energy storage applications: from design to end-of-life recovery journal January 2018
Computer and mobile phone waste in urban India: an analysis from the perspectives of public perception, consumption and disposal behaviour journal March 2018