Extraction of U(VI), Th(IV), Pu(IV), and Am(III) from nitric acid solutions with polyfunctional organophosphorus acids

Autor: Alexander N. Turanov, N. I. Rodygina, A. N. Yarkevich, A. M. Fedoseev, Vasilii K. Karandashev, Z. V. Safronova
Rok vydání: 2007
Předmět:
Zdroj: Radiochemistry. 49:618-623
ISSN: 1608-3288
1066-3622
DOI: 10.1134/s1066362207060148
Popis: Extraction of microamounts of U(VI), Th(IV), Pu(IV), and Am(III) nitrates from aqueous HNO3 solutions with solutions of (diphenylphosphinylmethyl)phenylphosphinic, (di-p-tolylphosphinylmethyl)phenylphosphinic, and (dioctylphosphinylmethyl)phosphinic acids and of butyl hydrogen (diphenylphosphinylmethyl)phosphonate in organic diluents was studied. The metal: extractant stoichiometric ratio in the extractable complexes was determined, and the diluent effect on the extraction efficiency was examined. The possibility of using a macroporous polymeric sorbent impregnated with (dioctylphosphinylmethyl)phenylphosphinic acid for concentrating metal ions from HNO3 solutions was demonstrated.
Databáze: OpenAIRE