A Study on Removal of Rare Earth Elements from U.S. Coal Byproducts by Ion Exchange
| Autor: | Nari Soundarrajan, Peter L. Rozelle, Charles E. Miller, Nuerxida Pulati, Sarma V. Pisupati, Morgan M. Mosser, Mark S. Klima, Aditi B. Khadilkar |
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| Rok vydání: | 2016 |
| Předmět: |
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 |
| Zdroj: | Metallurgical and Materials Transactions E. 3:6-17 |
| ISSN: | 2196-2944 2196-2936 |
| DOI: | 10.1007/s40553-015-0064-7 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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