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Synergistic extraction of uranium(VI) with tri-n-butyl phosphate and i-butyldodecylsulfoxide

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Summary

The synergistic extraction of uranium(VI) from aqueous nitric acid solution with a mixture of tri-n-butyl phosphate (TBP) and i-butyldodecylsulfoxide (BDSO) in toluene was investigated. The effects of the concentrations of extractant, nitric acid, sodium nitrate and sodium oxalate on the distribution ratios of uranium(VI) have been studied. The values of enthalpy change for the extraction reactions with BDSO, TBP and a mixture of TBP and BDSO in toluene were -23.2±0.8 kJ/mol, -29.2±1.4 kJ/mol and -30.6±0.6 kJ/mol, respectively. It has been found that the maximum synergistic extraction effect occurs when the molar ratio of TBP to BDSO is close to 1. The composition of the complex of the synergistic extraction is UO2(NO3)2 . BDSO . TBP.

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Shandong University, Jinan, P.R. China

    Li Lin

  2. Department of Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, P.R. China

    Yang Yan-Zhao

  3. School of Chemistry and Chemical Engineering, Shandong University, Jinan, P.R. China

    Zeng Shan

  4. School of Chemistry and Chemical Engineering, Shandong University, Jinan, P.R. China

    Zhu Tao

  5. Department of Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, P.R. China

    Sun Si-Xiu

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  1. Li Lin
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  2. Yang Yan-Zhao
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  3. Zeng Shan
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  4. Zhu Tao
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  5. Sun Si-Xiu
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Lin, L., Yan-Zhao, Y., Shan, Z. et al. Synergistic extraction of uranium(VI) with tri-n-butyl phosphate and i-butyldodecylsulfoxide. J Radioanal Nucl Chem 266, 355–359 (2005). https://doi.org/10.1007/s10967-005-0916-1

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  • DOI: https://doi.org/10.1007/s10967-005-0916-1

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