Synergistic Extraction of Plutonium (IV) from Nitric Acid Medium by Mixtures of TOPO and HTTA
- 1 August 1980
- journal article
- research article
- Published by Taylor & Francis in Separation Science and Technology
- Vol. 15 (7) , 1459-1469
- https://doi.org/10.1080/01496398008056097
Abstract
Synergistic solvent extraction of Pu(IV) from nitric acid medium by mixtures of thenoyltrifluoroacetone (HTTA) and tri-n-octylphosphine oxide (TOPO) in benzene was investigated by a method developed for such studies. The species involved in the extraction were identified as Pu(NO3)4 · 2TOPO, Pu-(N03)3(TTA) · 2TOPO, Pu(NO3)2(TTA)2 · TOPO, and Pu(NO3)(TTA)3 · TOPO. The concentration equilibrium constants for the extraction of all the suggested species from 1.0 M nitric acid were calculated from the data obtained, and the concentration equilibrium constants for their formation in the organic phase were estimated.Keywords
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