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The DOI matches its Crossref record; 25 of the 28 references it cites were found in a registry or an index.

A supported liquid membrane system for the selective recovery of rare earth elements from neodymium-based permanent magnets

Open access
Kim, Daejin, Powell, Lawrence, Delmau, Lætitia H., Peterson, Eric S., Herchenroeder, Jim, Bhave, Ramesh R.·2016·Separation Science and Technology

Abstract

The rare earth elements (REEs) play a vital role in the development of green energy and high-tech industries. In order to meet the fast-growing demand and to ensure sufficient supply of the REEs, it is essential to develop an efficient REE recovery process from post-consumer REE-containing products. In this research effort, we have developed a supported liquid membrane system utilizing polymeric hollow fiber modules to extract REEs from neodymium-based magnets with neutral extractants such as tetraoctyl digylcol amide (TODGA). The effect of process variables such as REE concentration, molar concentration of acid, and membrane area on REE recovery was investigated. We have demonstrated the selective extraction and recovery of REEs such as Nd, Pr, and Dy without co-extraction of non-REEs from permanent NdFeB magnets through the supported liquid membrane system. The extracted REEs were then recovered by precipitation followed by the annealing step to obtain crystalline REE powders in nearly pure form. The recovered REE oxides were characterized by X-ray diffraction, scanning electron microscope coupled with energy-dispersive X-ray spectroscopy, and inductively coupled plasma–optical emission spectroscopy.

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Research works printed but not linked: 3

  1. United States Environmental Protection Agency, 2012, Rare earth Elements: a review of production, processing
  2. Otto R., US Patent, 2012, A1
  3. Lyman J.W., 1992, US Patent, 5

Cited by

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Metadata

Authors
Kim, D., Powell, L., Delmau, L. H., Peterson, E. S., Herchenroeder, J., & Bhave, R. R.
Affiliations
  • Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA
  • Oak Ridge National Laboratory (US)
  • Nuclear Materials Processing Group, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA
  • Idaho National Laboratory (US)
  • Molycorp Magnequench, Greenwood Village, Colorado, USA
Venue
Separation Science and Technology
Published
2016-05-24
Volume
51
Issue
10
Pages
1716-1726
ISSN
  • 0149-6395 (ISSN-L)
  • 1520-5754
OpenAlex
W2396309265
Cited by
54
References
28
Citations by year
2026: 4 · 2025: 2 · 2024: 9 · 2023: 6 · 2022: 9 · 2021: 4 · 2020: 10 · 2019: 3 · 2018: 3 · 2017: 3
FWCI
2.67
Type
journal article
Language
en
Open access
Locations
  • Separation Science and Technology (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
Funders
Critical Materials Institute (N/A)
Topics
  • Physical Sciences › Materials Science › Metals and Alloys › Extraction and Separation Processes
  • Physical Sciences › Chemistry › Inorganic Chemistry › Radioactive element chemistry and processing
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Recycling and Waste Management Techniques
Keywords
rare earth recovery, supported liquid membrane, hollow fiber membrane module, Nd-Fe-B permanent magnets, TODGA, selective extraction, post-consumer recycling, praseodymium, dysprosium, neodymium, annealing

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CoChat. (2026). Citation check: A supported liquid membrane system for the selective recovery of rare earth elements from neodymium-based permanent magnets. https://app.cochat.ai/papers/10.1080/01496395.2016.1171782
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Kim, D., Powell, L., Delmau, L. H., Peterson, E. S., Herchenroeder, J., & Bhave, R. R. (2016). A supported liquid membrane system for the selective recovery of rare earth elements from neodymium-based permanent magnets. Separation Science and Technology. https://doi.org/10.1080/01496395.2016.1171782

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.