Abstract
Sorption of protactinium from HNO3 solutions with the aid of phosphate resins and various oxides is studied in connection with concentration of Pa 231. Manganese oxide w as found to be the most efficient sorbent, with a high degree of freedom from iron, aluminum, and calcium impurities upon precipitation. The most pronounced differentiation between manganese and protactinium was achieved in solvent extraction by chlorex. The behaviorofprotactinium in response to various techniques for separation of titanium and zirconium was studied, and it was shown that in the salicylate method protactinium undergoes complete coprecipitation with zirconium salicylate. These operations led to the recovery by concentration of Pa 231, the principal bulk component being zirconium.
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Additional information
Translated from Atomnaya Énergiya, Vol. 16, No. 2, pp. 134–137, February, 1964