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Some studies on synergic extraction of mixed ligand species of uranium(VI)

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Abstract

The extraction of U(VI) by mixtures of HTTA and TBP from aqueous thiocyanate medium has been studied. From the data obtained it was observed that the predominant uranium species extracted, causing synergic enhancement in the extraction of U(VI), is UO2(SCN)TTA · 2TBP when benzene and cyclohexane are used as diluents, and that at a very low concentration of TBP the contribution of additional species, viz. UO2(TTA)2 · TBP becomes significant. With chloroform as diluent, however, both of these species are contributing to the synergic enhancement. The extraction of a quaternary uranium species, UO2(SCN)TTA · 2TBP, involving the participation of the aqueous anion is thus established. Equilibrium constants for the various extraction equilibria involved are calculated.

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Authors and Affiliations

  1. Fuel Chemistry Division, Bhabha Atomic Research Centre, Trombay, 400 085, Bombay, (India)

    K. V. Chetty, P. M. Mapara, Rajendra Swarup & S. K. Patil

Authors
  1. K. V. Chetty
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  2. P. M. Mapara
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  3. Rajendra Swarup
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  4. S. K. Patil
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Chetty, K.V., Mapara, P.M., Swarup, R. et al. Some studies on synergic extraction of mixed ligand species of uranium(VI). Journal of Radioanalytical and Nuclear Chemistry Articles 121, 149–159 (1988). https://doi.org/10.1007/BF02041456

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  • DOI: https://doi.org/10.1007/BF02041456

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