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Emulsion liquid membrane extraction of fission products promoted by polyvalent and organic acids

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Abstract

Emulsion liquid membranes (ELM) with di-2-ethylhexylphosphoric acid in n-alkane, and dipicrylamine and cobalt(III) dicarbollide in nitrobenzene stabilized in double emulsions by SPAN 80/85 surfactant were used for preconcentration of radioactive fission products (137Cs,90Sr,139Ce, and152Eu) from slightly acidic nitrate solutions. The efficiency of sulfuric, phosphotungstic and silicotungstic acids as stripping agents, and picric acid as the bulky anion additive was investigated. A group separation of the fission products is possible by the ELM technique and can be considered for their removal from waste water solutions.

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El Said, N., Macášek, F. Emulsion liquid membrane extraction of fission products promoted by polyvalent and organic acids. Journal of Radioanalytical and Nuclear Chemistry, Articles 163, 113–121 (1992). https://doi.org/10.1007/BF02037486

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  • DOI: https://doi.org/10.1007/BF02037486

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