|
|||||
|
|
Extraction of U(VI), Th(IV), and REE(III) from nitric acid solutions with (N,N-dialkylcarbamoylmethyl)- and (N-alkylcarbamoylmethyl)phenylphosphinic acids |
|
| Authors: | A N Turanov V K Karandashev E V Sharova O I Artyushin I L Odinets |
| Affiliation: | 1. Institute of Solid State Physics, Russian Academy of Sciences, Institutskaya ul. 2, Chernogolovka, Moscow oblast, 142432, Russia 2. Institute of Technological Problems of Microelectronics and Ultrapure Materials, Russian Academy of Sciences, Chernogolovka, Moscow oblast, Russia 3. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia |
| Abstract: | Extraction of microamounts of U(VI), Th(IV), and REE(III) from HNO3 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. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |