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):
- 10422023
- Application Number:
- 15/138,117
- Assignee:
- Carnegie Mellon University (Pittsburgh, PA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
- 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 = {Tue Sep 24 00:00:00 EDT 2019},
month = {Tue Sep 24 00:00:00 EDT 2019}
}
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