DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Separation of rare earth elements using supported membrane solvent extraction

Abstract

A system and method for the recovery and separation of rare earth elements (REEs) are provided. The system and method include the supported membrane solvent extraction of REEs and the separation of light and heavy REEs that have been recovered from scrap permanent magnets and other electronic waste. In supported membrane solvent extraction, an organic phase consisting of an extractant and an organic solvent is immobilized in the pores of hollow fibers. An aqueous feed solution and a strip solution flow along the shell side and lumen side of the hollow fibers, respectively. The extractant functions as a carrier to selectively transport certain rare earth metal ions from the feed side to the strip side. The rare earth metals are concurrently back extracted in the strip solution, allowing processing to proceed continuously without equilibrium limitations.

Inventors:
; ;
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1892791
Patent Number(s):
11293078
Application Number:
16/537,759
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Resource Relation:
Patent File Date: 08/12/2019
Country of Publication:
United States
Language:
English

Citation Formats

Bhave, Ramesh R., Islam, Syed Z., and Deshmane, Vishwanath. Separation of rare earth elements using supported membrane solvent extraction. United States: N. p., 2022. Web.
Bhave, Ramesh R., Islam, Syed Z., & Deshmane, Vishwanath. Separation of rare earth elements using supported membrane solvent extraction. United States.
Bhave, Ramesh R., Islam, Syed Z., and Deshmane, Vishwanath. Tue . "Separation of rare earth elements using supported membrane solvent extraction". United States. https://www.osti.gov/servlets/purl/1892791.
@article{osti_1892791,
title = {Separation of rare earth elements using supported membrane solvent extraction},
author = {Bhave, Ramesh R. and Islam, Syed Z. and Deshmane, Vishwanath},
abstractNote = {A system and method for the recovery and separation of rare earth elements (REEs) are provided. The system and method include the supported membrane solvent extraction of REEs and the separation of light and heavy REEs that have been recovered from scrap permanent magnets and other electronic waste. In supported membrane solvent extraction, an organic phase consisting of an extractant and an organic solvent is immobilized in the pores of hollow fibers. An aqueous feed solution and a strip solution flow along the shell side and lumen side of the hollow fibers, respectively. The extractant functions as a carrier to selectively transport certain rare earth metal ions from the feed side to the strip side. The rare earth metals are concurrently back extracted in the strip solution, allowing processing to proceed continuously without equilibrium limitations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 05 00:00:00 EDT 2022},
month = {Tue Apr 05 00:00:00 EDT 2022}
}

Works referenced in this record:

Comparison of Cyanex 272 and Cyanex 572 for the separation of Neodymium from a Nd/Tb/Dy mixture by pertraction
journal, November 2017


Separation of rare earth values by liquid/liquid extraction
patent, March 1993


Membrane Assisted Solvent Extraction for Rare Earth Element Recovery
patent-application, December 2016


Method for metal recovery from aqueous solutions
patent, February 2003


Membrane assisted solvent extraction for rare earth element recovery
patent, May 2018


Supported liquid inorganic membranes for nuclear waste separation
patent, April 2015


Factors influencing separation selectivity of rare earth elements in flat sheet supported liquid membranes
journal, December 2018


Membrane hydro-metallurgical extraction process
patent, May 1976


Indium Recovery by Supported Liquid Membrane with Strip Dispersion
patent-application, September 2010


Separation and mass transport of Nd(III) from mixed rare earths via hollow fiber supported liquid membrane: Experiment and modeling
journal, July 2014


Selective enrichment of palladium from spent automotive catalysts by using a liquid membrane system
journal, September 2003


Liquid-liquid extraction process of metals
patent, September 1977


Separation of Terbium (III,IV) Oxide
patent-application, January 2017


The separation of Nd(III) from mixed rare earth via hollow fiber supported liquid membrane and mass transfer analysis
journal, June 2015