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MEMBRANE ASSISTED SOLVENT EXTRACTION FOR RARE EARTH ELEMENT RECOVERY

United States Patent Application

20160346736
A1
View the Complete Application at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
Systems and methods for the recovery of rare earth elements are provided. The systems and methods generally include membrane assisted solvent extraction using permeable hollow fibers having an immobilized organic phase within the pores of the hollow fibers. The permeable hollow fibers are generally in contact with an acidic aqueous feed on one side thereof and a strip solution on another side thereof. The systems and methods generally include the simultaneous extraction and stripping of rare earth elements as a continuous recovery process that is well suited for post-consumer products, end-of-life products, and other recovery sources of rare earth elements.
Bhave, Ramesh R. (Knoxville, TN), Kim, Daejin (Knoxville, TN), Peterson, Eric S. (Idaho Falls, ID)
14/ 724,985
May 29, 2015
[0001] This invention was made with government support under Contract No. DE-AC05-00OR22725 awarded by the U.S. Department of Energy. The government has certain rights in the invention.