1988•Sov. Radiochem. (Engl. Transl.); (United States)Requires access
Americium and europium extraction from alkali and carbonate solutions with 2-hydroxy-5-alkylbenzyldiethanolamine
Z.K. Karalova, T.I. Bukina, E.A. Devirts, Z.Z. Agaev, B. F. Myasoedov
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Abstract
Americium and europium extraction from alkali solutions in presence of tartrate and carbonate ions using 2-hydroxy-5-alkylbenzyldiethanolamine (DEAP) in different diluents as a function of NaOH, Na/sub 2/C/sub 4/H/sub 4/O/sub 6/, K/sub 2/CO/sub 3/, extractant and metal concentration, and pH of the medium has been studied. It was found that americium is extracted to the maximum by 1 M DEAP solution in hexane from tartrate solutions with an NaOH concentration not lower than 1 M and by 0.5-2.0 M K/sub 2/CO/sub 3/ solutions with a pH > 13. The highest americium-europium pair separation factors were obtained in the systems 0.1 M DEAP-0.01 M Na/sub 2/C/sub 4/H/sub 4/O/sub 6/-4.0 M NaOH and 0.1 MDEAP-1 M K/sub 2/CO/sub 3/ (pH = 12.05). The data obtained permit one to regard DEAP a potential extractant for TPE extraction and separation of propertywise similar elements in alkali solutions.