Solvent extraction of Pu(IV) with TODGA in C6mimTf2N
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Studies on the solvent extraction of Plutonium(Pu(IV)) from aqueous nitric acid by N,N,N′,N′-tetraoctyl-diglycolamide (TODGA) in 1-hexyl-3-methylimidazolium-bis(trifluoromethylsulfonyl) imide (C6mimTf2N) room temperature ionic liquid (RTIL) were carried out. It was found that Pu(IV) is extracted into RTIL phase as [Pu(NO3)(TODGA)]3+ through cation exchange mechanism. Extraction reaction equation is obtained by the influence of acidity and extractant concentration, and the parameters of thermodynamic equilibrium constant was calculated.
KeywordsSolvent extraction Plutonium(IV) TODGA C6mimTf2N
Authors thank the NCFC (NO. 91126006) programme for financial support of the project. The authors are also grateful to staffs in Radioecology programme (headed by hehui), Department of RadioChemistry, China Institute of Atomic Energy, for all support in this work.
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