Sorption of REE(III), Th(IV), and U(VI) ions from nitric acid solutions with sorbents based on tetraoctyldiglycolamide

被引:17
作者
Milyutin V.V. [1 ]
Gelis V.M. [1 ]
Nekrasova N.A. [1 ]
Firsova L.A. [1 ]
Kharitonov O.V. [1 ]
Baulin V.E. [1 ,2 ]
机构
[1] Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, korp. 4, Moscow
[2] Institute of Physiologically Active Compounds, Russian Academy of Sciences, Severnyi proezd 1, Chernogolovka, Moscow oblast
基金
俄罗斯基础研究基金会;
关键词
actinides; impregnated sorbents; nitric acid solutions; rare earth elements; sorption; tetraoctyldiglycolamide;
D O I
10.1134/S1066362215050100
中图分类号
学科分类号
摘要
The characteristics of various sorbents based on tetraoctyldiglycolamide (TODGA) in sorption of REE(III), Th(IV), and U(VI) ions from nitric acid solutions were studied. The static capacity of the sorbents increases as the TODGA content of the sorbent and HNO3 concentration in the initial solution are increased. Europium can be desorbed with dilute HNO3 (0.01 M) and complexone (DTPA) solutions. The sorption characteristics of the sorbents in repeated sorption-desorption cycles remain stable. The sorbents prepared by joint copolymerization (solid extactants, SEs) exhibit better sorption and kinetic characteristics compared to the sorbents prepared by impregnation of the ready polymeric matrix. © 2015 Pleiades Publishing, Inc.
引用
收藏
页码:513 / 517
页数:4
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