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Recycling rare earths: Perspectives and recent advances

Journal Article · · MRS Bulletin
Abstract

Rare-earth element (REE) demand is expected to increase by a factor of up to 7 by 2040. Recycling avoids the significant hurdles associated with opening new mines, but collection and disassembly of REE-containing devices are barriers. Absolute and relative abundances of REEs and co-occurring constituents differ significantly in secondary compared to primary sources, presenting challenges and opportunities. REE concentrations are typically low, but manufactured devices include only the desired REE, avoiding the “REE balance problem” that besets natural ores. Fewer REEs need to be separated, as compared to separation of the entire lanthanide series. Co-recovery of precious (e.g., Au, Ag, Pt) or base metals (e.g., Cu, Sn, Zn) from e-wastes can offset recycling costs. Some examples of recently developed approaches for REE extraction and separation are presented here, with an emphasis on methods offering environmental benefits such as lower toxic chemical usage and reduced energy costs.

Graphical abstract

Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC07-05ID14517; AC52-07NA27344
OSTI ID:
1864358
Alternate ID(s):
OSTI ID: 1889722
OSTI ID: 1897352
Report Number(s):
INL/JOU-21-65156; LLNL-JRNL-828876; PII: 301
Journal Information:
MRS Bulletin, Journal Name: MRS Bulletin Journal Issue: 3 Vol. 47; ISSN 0883-7694
Publisher:
Cambridge University Press (CUP)Copyright Statement
Country of Publication:
United States
Language:
English

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