Abstract
The extraction of U(IV) by bis(2,4,4-trimethylpentyl) monothiophosphinic acid (CYANEX 302) in kerosene from nitric acid solution has been investigated under equilibrium conditions. The effects of the different parameters affecting the extraction process were studied and the stoichiometry of the extracted species was elucidated. The kinetics of this extraction was also investigated using a stirred Lewis cell. The effects of the different parameters affecting the extraction rate as well as the temperature were separately investigated. The results are interpreted by a reaction mechanism where the extraction process of U(IV) is controlled by a chemical reaction at the interface rather than in the bulk phase.
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Abdel Rahman, N., Daoud, J.A. & Aly, H.F. Mechanism of uranium(IV) extraction with CYANEX 302 in kerosene from nitrate medium. Journal of Radioanalytical and Nuclear Chemistry 258, 597–603 (2003). https://doi.org/10.1023/B:JRNC.0000011756.77475.17
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DOI: https://doi.org/10.1023/B:JRNC.0000011756.77475.17