Selective Extraction of Rare Earth Elements from Permanent Magnet Scraps with Membrane Solvent Extraction

Kim, Daejin; Powell, Lawrence E.; Delmau, Lætitia H.; Peterson, Eric S.; Herchenroeder, Jim; Bhave, Ramesh R.

doi:10.1021/acs.est.5b01306

Title: Selective Extraction of Rare Earth Elements from Permanent Magnet Scraps with Membrane Solvent Extraction

Journal Article · Wed Jun 24 00:00:00 EDT 2015 · Environmental Science and Technology

DOI:https://doi.org/10.1021/acs.est.5b01306· OSTI ID:1265582

Kim, Daejin ^[1]; Powell, Lawrence E. ^[1]; Delmau, Lætitia H. ^[2]; Peterson, Eric S. ^[3]; Herchenroeder, Jim ^[4]; Bhave, Ramesh R. ^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Nuclear Materials Processing Group
Idaho National Lab. (INL), Idaho Falls, ID (United States). Center for Advanced Energy Studies
Molycorp Magnequench, Greenwood Village, CO (United States)

In this paper, the rare earth elements (REEs) such as neodymium, praseodymium, and dysprosium were successfully recovered from commercial NdFeB magnets and industrial scrap magnets via membrane assisted solvent extraction (MSX). A hollow fiber membrane system was evaluated to extract REEs in a single step with the feed and strip solutions circulating continuously through the MSX system. The effects of several experimental variables on REE extraction such as flow rate, concentration of REEs in the feed solution, membrane configuration, and composition of acids were investigated with the MSX system. A multimembrane module configuration with REEs dissolved in aqueous nitric acid solutions showed high selectivity for REE extraction with no coextraction of non-REEs, whereas the use of aqueous hydrochloric acid solution resulted in coextraction of non-REEs due to the formation of chloroanions of non-REEs. The REE oxides were recovered from the strip solution through precipitation, drying, and annealing steps. Finally, the resulting REE oxides were characterized with XRD, SEM-EDX, and ICP-OES, demonstrating that the membrane assisted solvent extraction is capable of selectively recovering pure REEs from the industrial scrap magnets.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Critical Materials Institute (CMI); Idaho National Laboratory (INL), Idaho Falls, ID (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office

Contributing Organization:: Idaho National Lab. (INL), Idaho Falls, ID (United States)

Grant/Contract Number:: AC05-00OR22725; AC07-05ID14517

OSTI ID:: 1265582

Alternate ID(s):: OSTI ID: 1294429

Report Number(s):: INL/JOU-15-34473

Journal Information:: Environmental Science and Technology, Vol. 49, Issue 16; ISSN 0013-936X

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 79 works

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Characterization and Leaching of Neodymium Magnet Waste and Solvent Extraction of the Rare-Earth Elements Using TODGA Gergoric, Marino; Ekberg, Christian; Foreman, Mark R. St J. Journal of Sustainable Metallurgy, Vol. 3, Issue 3 https://doi.org/10.1007/s40831-017-0122-8	journal	April 2017
Mesoporous SiO2 Nanoparticles: A Unique Platform Enabling Sensitive Detection of Rare Earth Ions with Smartphone Camera Dai, Xinyan; Rasamani, Kowsalya D.; Hu, Feng Nano-Micro Letters, Vol. 10, Issue 4 https://doi.org/10.1007/s40820-018-0208-2	journal	June 2018
REE Recovery from End-of-Life NdFeB Permanent Magnet Scrap: A Critical Review Yang, Yongxiang; Walton, Allan; Sheridan, Richard Journal of Sustainable Metallurgy, Vol. 3, Issue 1 https://doi.org/10.1007/s40831-016-0090-4	journal	September 2016
Rationally designed mineralization for selective recovery of the rare earth elements Hatanaka, Takaaki; Matsugami, Akimasa; Nonaka, Takamasa Nature Communications, Vol. 8, Issue 1 https://doi.org/10.1038/ncomms15670	journal	May 2017
Recovery of Rare Earth Elements by Carbon-Based Nanomaterials—A Review Cardoso, Celso E. D.; Almeida, Joana C.; Lopes, Cláudia B. Nanomaterials, Vol. 9, Issue 6 https://doi.org/10.3390/nano9060814	journal	May 2019
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Selective extraction of gadolinium using free-standing imprinted mesoporous carboxymethyl chitosan films with high capacity Zheng, Xudong; Zhang, Yi; Bian, Tingting Cellulose, Vol. 26, Issue 2 https://doi.org/10.1007/s10570-018-2124-5	journal	November 2018

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