Concentrating 99Mo from LEU by extraction with higher hydroxamic acids solutions in alcohols C8-C10.

Autor:	Naumov, Andrey A., Goletskiy, Nikolay D., Zilberman, Boris Ya., Kudinov, Alexander S., Puzikov, Egor A., Murzin, Andrey A.
Předmět:	HYDROXAMIC acids EXTRACTION (Chemistry) ALCOHOLS (Chemical class) SOLUTION (Chemistry) AUTOCATALYSIS
Zdroj:	Journal of Radioanalytical & Nuclear Chemistry; Dec2018, Vol. 318 Issue 3, p2219-2226, 8p, 1 Diagram, 1 Chart, 9 Graphs
Abstrakt:	Extraction of Mo and U from HNO3 solutions with 0.2% solutions of higher hydroxamic acids (HA) in alcohols sparingly soluble in water was studied for production of 99Mo concentrate from LEU target solutions, and from 3% 235UO2. Batch extraction of 99Mo recovery was carried out using the caprinohydroxamic acid (DHA) dissolved in 20% decanol-1 with Isopar M in 3 steps: extraction, scrubbing and backwashing with autocatalytic thermo-chemical HA oxidizing destruction with HNO3 in combination with complexing 99Mo in aqueous phase by salt-free reagents. Mo total recovery was ~ 98%, while the smallest decontamination factors for 125I was 2 × 104 and ~ 106 for other nuclides. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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