Abstract

The synergistic extraction of U(VI) from aqueous nitric acid by mixtures of HTTA and TBP was studied to establish the presence of mixed ligand species, using a method-developed in this laboratory. The results obtained by this method were corroborated with the conventional extraction studies. It was established that the species UO 2(NO 3)(TTA)TBP reported in the literature was not involved in the synergistic extraction and that the only species responsible for synergism was UO 2(TTA) 2·TBP. Equilibrium constants for various equilibria involved are calculated.

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