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A Study on Removal of Rare Earth Elements from U.S. Coal Byproducts by Ion Exchange
- Source :
- Metallurgical and Materials Transactions E. 3:6-17
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- Rare earth elements are known to occur in low concentrations in U.S. coals and coal byproducts. These low concentrations may make rare earth element recovery from these materials unattractive, using only physical separation techniques. However, given the significant production of rare earths through ion exchange extraction in China, two U.S. coal byproducts were examined for ion extraction, using ammonium sulfate, an ionic liquid, and a deep eutectic solvent as lixiviants. Extraction of rare earth elements in each case produced high recoveries of rare earth elements to the solution. This suggests that in at least the cases of the materials examined, U.S. coal byproducts may be technically suitable as REE ores. More work is required to establish economic suitability.
- Subjects :
- Ammonium sulfate
Ion exchange
business.industry
Rare-earth element
Extraction (chemistry)
Mineralogy
010501 environmental sciences
010502 geochemistry & geophysics
01 natural sciences
Deep eutectic solvent
Ion
chemistry.chemical_compound
chemistry
Environmental chemistry
Ionic liquid
Coal
business
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 21962944 and 21962936
- Volume :
- 3
- Database :
- OpenAIRE
- Journal :
- Metallurgical and Materials Transactions E
- Accession number :
- edsair.doi...........442ce54815373c551be67b15a22274a4