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Extraction of uranium(VI) and thorium(IV) ions from nitric acid solutions by N,N,N′,N′-tetrabutyladipicamide

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Abstract

A new symmetrical diamide, the straight-chain alakyl substituted neutral tetrabutyladipicamide (TBAA) has been synthesized, characterized and used for the extraction of U(V) and Th(IV) from nitric acid solutions in a diluent composed of 50% 1,2,4-trimethylbenzene (TMB) and 50% kerosene (OK). Extraction distribution coefficients of U(VI) and Th(IV) as a function of aqueous nitric acid concentration, extractant concentration and temperature have been studied. Back-extraction of U(VI) and Th(IV) from organic phases by dilute nitric acid has been undertaken. From the data, the compositions of extracted species, equilibrium constants and enthalpies of extraction reactions have also been calculated.

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Authors and Affiliations

  1. Institute of Nuclear Research, Chinese Academy of Sciences, P. O. Box 800-204, 201800, Shanghai, China

    You-Shao Wang, Guo-Xin Sun, De-Feng Xie & Bo-Rong Bao

  2. Department of Chemistry, Shanghai University, 201800, Shanghai, China

    Wei-Guo Cao

Authors
  1. You-Shao Wang
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  2. Guo-Xin Sun
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  3. De-Feng Xie
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  4. Bo-Rong Bao
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  5. Wei-Guo Cao
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Wang, YS., Sun, GX., Xie, DF. et al. Extraction of uranium(VI) and thorium(IV) ions from nitric acid solutions by N,N,N′,N′-tetrabutyladipicamide. Journal of Radioanalytical and Nuclear Chemistry Letters 214, 67–76 (1996). https://doi.org/10.1007/BF02165059

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  • DOI: https://doi.org/10.1007/BF02165059

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