OSCILLATORY EXTRACTION OF URANIUM |
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| Authors: | Mikhail A. Afonin Vadim V Romanovski Vadim A Scherbakov |
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| Affiliation: | 1. Saint Petersburg Institute of Technology , Russia;2. Khlopin Radium Institute , Saint Petersburg, Russia |
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| Abstract: | ABSTRACT The kinetics of U and Ce extraction by tri-n-butyl-phosphate ( TBP) and the redox potential behavior in the aqueous phase have been investigated in an oscillatory extraction system. The extraction has been followed continuously by UV-visible spectroscopy, potentiometry, and radioactive counting methods. Data collected showed the changes of Ce4+ and U02+ concentrations in organic and aqueous phases with time. Uranium actively responded to the redox potential fluctuations. The uranium distribution coefficient changed repeatedly and was out-of-phase with Ce( IV) fluctuations. |
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