SYNERGETIC EXTRACTION IN SYSTEMS WITH DICARBOLLIDE AND BIDENTATE PHOSPHONATE

被引：20

作者：

RAIS, J ^{[1
]}

TACHIMORI, S ^{[1
]}

SELUCKY, P ^{[1
]}

KADLECOVA, L ^{[1
]}

机构：

[1] NUCL RES INST, CS-25068 PRAGUE, CZECH REPUBLIC

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 1994年 / 29卷 / 02期

关键词：

D O I：

10.1080/01496399408002482

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A process for the extraction of tervalent metal cations from 3 M HNO3 highly radioactive waste based on synergetic mixtures of dicarbollide with neutral organophosphonate (dibutyl diethylcarbamoylmethylene phosphonate) is proposed. Due to the great hydrophobicity of dicarbollide anion, the species ML(n)(3+).3BCl(-) is extracted and the extraction in this TRUDIC process decreases with aqueous acidity, contrary to TRUEX process. HL(+) BCl- is the main particle in the organic phase. The extraction of Cs+, Sr2+, Ba2+ and Ru is low, and the extraction of Zr can be suppressed by citric acid. Possible advantages of the system are discussed.

引用

页码：261 / 274

页数：14

共 22 条

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[2]

CHIARIZIA R, 1992, SOLVENT EXTR ION EXC, V10, P10

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