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Anna Yu. Fominykh, Petr I. Matveev
Solvent
extraction of uranium(VI) from acid and alkaline solutions by systems based on
ionic liquids
Abstract
Abstract. The review is devoted to
the problem of efficient and selective extraction of uranium(VI) from various
media by systems based on ionic liquids. The currently used technological
process for extracting uranium(VI) from spent nuclear fuel solutions is
reviewed, and its disadvantages are identified. Information on the main types
of ionic liquids studied for the extraction of uranium(VI) as solvents, extractants,
and also in pure form has been studied and systematized. Separately,
commercially available ammonium and phosphonium ionic liquids were examined and
it was found that they have a high extraction efficiency of uranium(VI) in
hydrochloric acid and alkaline media, while in a nitric acid media the highest
distribution coefficients are observed for tetravalent actinides.
Key words: solvent extraction, ionic
liquids, actinides, uranium
Copyright (C) Chemistry Dept., Moscow State University, 2002
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