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Yan-Zhao Yang, Jian Han, Tao Zhu, Chang-Hong Luo, Chuan-Bo Xia

Study on some physical chemistry aspects of extraction of uranium(VI) with bis(octylsulfinyl)methane

The extraction equilibrium and kinetics of uranium(VI) from aqueous nitric acid with bis(octylsulfinyl)methane (BOSM) in 1,1,2,2-tetrachloroethane extraction has been studied. The extracted species was established to be UO₂(NO₃)₂·2BOSM. The extraction process rate is controlled by the following reaction:

UO₂(NO₃)₂ + BOSM_(i)→^k1/←_k-1UO₂(NO₃)₂· BOSM_(i)

The change in enthalpy associated with the extraction reaction was established to be -22±3 kJ/mol.

Radiochimica Acta, Oldenbourg Wissenschaftsverlag

Print ISSN: 0033-8230
Volume: 93, 06/2005
Pages: 327 - 331

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