Extraction of U(VI), Th(IV), and REE(III) from nitric acid solutions with (N,N-dialkylcarbamoylmethyl)- and (N-alkylcarbamoylmethyl)phenylphosphinic acids

被引：0
作者：
Turanov A.N. [1 ]
Karandashev V.K. [2 ]
Sharova E.V. [3 ]
Artyushin O.I. [3 ]
Odinets I.L. [3 ]
机构：
[1] Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast 142432
[2] Institute of Technological Problems of Microelectronics and Ultrapure Materials, Russian Academy of Sciences, Chernogolovka, Moscow oblast
[3] Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow
来源：
Radiochemistry | 2011年 / 53卷 / 4期
关键词：
extraction; polyfunctional organophosphorus acids; rare-earth elements; sorption; thorium; uranium;
D O I：
10.1134/S1066362211040060
中图分类号：
学科分类号：
摘要：
Extraction of microamounts of U(VI), Th(IV), and REE(III) from HNO 3 solutions with solutions of (N,N-dialkylcarbamoylmethyl)- and (N-alkylcarbamoylmethyl)phenylphosphinic acids in dichloroethane was studied. The stoichiometry of the extractable complexes was determined, and the influence exerted on the efficiency of the U(VI), Th(IV), and REE(III) recovery into the organic phase by the extractant structure, organic diluent, and aqueous phase composition was examined. The possibility of selective recovery and concentration of U(VI), Th(IV), and REE(III) from nitric acid solutions with a complexing sorbent prepared by noncovalent immobilization of the examined polyfunctional organophosphorus acids on a macroporous polymeric matrix was demonstrated. © 2011 Pleiades Publishing, Ltd.
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页码：375 / 382
页数：7
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