Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 1998, Vol. 9 ›› Issue (3): 163

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The dodecyltolylsulfoxide extraction of uranium(VI)

Yang Yan-Zhao1, Sun Guo-Xin1, Bao Bo-Rong1, Yang Yong-Hui2, Sun Si-Xiu2   

  1. 1 Shanghai Institute of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800;
    2 Department of Chemistry, Shandong University, Jinan 250100
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Yang Yan-Zhao, Sun Guo-Xin, Bao Bo-Rong, Yang Yong-Hui, Sun Si-Xiu. The dodecyltolylsulfoxide extraction of uranium(VI).Nuclear Science and Techniques, 1998, 9(3): 163

Abstract: The liquid-liquid extraction behavior of uranium(VI) from aqueous nitric acid media with dodecyltolylsulfoxide (DTSO) has been studied over a wide range of conditions. The extracted species appear to be UO2(NO3)2·2DTSO. It was found that the extraction was increased with increasing nitric acid concentration up to 5mol/L HNO3 and then decreased, and the extraction of uranium(VI) decreased with increasing temperature. So it can be deduced that the process of extraction is exothermic and the enthalpy of the extraction obtained is ΔH = —16.3kJ/mol.

Key words: Dodecyltolylsulfoxide, Solvent extraction, Uraninm(VI)