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Stripping of uranium from an ionic liquid medium by TOPO-modified supercritical carbon dioxide

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Abstract

UO2 2+, which is extracted from the aqueous phase into the 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (C2mimNTf2) ionic liquid phase with octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO), can be stripped by supercritical CO2. Trioctylphosphine oxide (TOPO), the modifier added to the supercritical CO2 phase, enhances the stripping efficiency by up to 99%.

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Authors and Affiliations

  1. Beijing National Laboratory for Molecular Sciences (BNLMS), Fundamental Science on Radiochemistry and Radiation Chemistry Laboratory, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China

    Jing Fu, QingDe Chen & XingHai Shen

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  1. Jing Fu
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  2. QingDe Chen
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  3. XingHai Shen
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Correspondence to XingHai Shen.

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Fu, J., Chen, Q. & Shen, X. Stripping of uranium from an ionic liquid medium by TOPO-modified supercritical carbon dioxide. Sci. China Chem. 58, 545–550 (2015). https://doi.org/10.1007/s11426-014-5162-3

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  • DOI: https://doi.org/10.1007/s11426-014-5162-3

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