Solvent Extraction Research and Development, Japan
Online ISSN : 2188-4765
Print ISSN : 1341-7215
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Extraction of Lithium from Salt Lake Brine with Tributyl Phosphate and an Ionic Liquid
Takuma SEKIMOTOSyouhei NISHIHAMAKazuharu YOSHIZUKA
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2018 Volume 25 Issue 2 Pages 117-123

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Abstract

Solvent extraction of lithium (Li) from salt lake brine was investigated by employing tributyl phosphate (TBP) and 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (BMI-TFSI). High extraction efficiency of Li was obtained from the brine containing co-existed metals. The extraction of Li was proceeded by solvation of Li with TBP followed by cation exchange with the ionic liquid. The purity of Li was increased to 85.1% after two extraction – stripping processes of the present extraction system.

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© 2018 Japan Association of Solvent Extraction
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