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Title: Recovery of rare earth elements by liquid-liquid extraction from fresh water to hypersaline solutions

Abstract

The disclosure describes a method of extraction for optimal recovery of rare earth elements (REE). This includes the optimization of a liquid-liquid extraction technique for economic extraction of REE from chemically complex brines. Through the use of a model, operating conditions are altered to increase separation efficiency. The technique achieves >98% recovery of all rare earth elements in one fraction, while using small volumes of sample and reagents. The method of the present invention recovers REE from previously unexploited waste streams, without need for development of new process equipment and while keeping a small footprint because of the volumes involved.

Inventors:
; ;
Issue Date:
Research Org.:
Carnegie Mellon Univ., Pittsburgh, PA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1576274
Patent Number(s):
10,422,023
Application Number:
15/138,117
Assignee:
Carnegie Mellon University (Pittsburgh, PA)
DOE Contract Number:  
FE0004000
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Apr 25
Country of Publication:
United States
Language:
English

Citation Formats

Noack, Clinton W., Karamalidis, Athanasios K., and Dzombak, David A. Recovery of rare earth elements by liquid-liquid extraction from fresh water to hypersaline solutions. United States: N. p., 2019. Web.
Noack, Clinton W., Karamalidis, Athanasios K., & Dzombak, David A. Recovery of rare earth elements by liquid-liquid extraction from fresh water to hypersaline solutions. United States.
Noack, Clinton W., Karamalidis, Athanasios K., and Dzombak, David A. Tue . "Recovery of rare earth elements by liquid-liquid extraction from fresh water to hypersaline solutions". United States. https://www.osti.gov/servlets/purl/1576274.
@article{osti_1576274,
title = {Recovery of rare earth elements by liquid-liquid extraction from fresh water to hypersaline solutions},
author = {Noack, Clinton W. and Karamalidis, Athanasios K. and Dzombak, David A.},
abstractNote = {The disclosure describes a method of extraction for optimal recovery of rare earth elements (REE). This includes the optimization of a liquid-liquid extraction technique for economic extraction of REE from chemically complex brines. Through the use of a model, operating conditions are altered to increase separation efficiency. The technique achieves >98% recovery of all rare earth elements in one fraction, while using small volumes of sample and reagents. The method of the present invention recovers REE from previously unexploited waste streams, without need for development of new process equipment and while keeping a small footprint because of the volumes involved.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {9}
}

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Works referenced in this record:

Method for cleaning solution used in nuclear fuel reprocessing
patent, July 1983


Extractant for rare earth metal and method for extracting the same
patent, November 1993


Method for extracting metal ions
patent, October 1989