Separation of Co(II) and Ni(II) from aqueous solutions by bis(2,4,4-trimethylpentyl)phosphinic acid (Cyanex 272) using trihexyl(tetradecyl)phosphonium chloride (Cyphos IL 101) as solvent

被引：28

作者：

Cholico-Gonzalez, Diana ^{[1
]}

Chagnes, Alexandre ^{[2
]}

Cote, Gerard ^{[2
]}

Avila-Rodriguez, Mario ^{[3
]}

机构：

[1] Univ Michoacana, Catedra CONACyT Inst Invest Met & Mat, Morelia 58030, Michoacan, Mexico

[2] PSL Res Univ, Chim ParisTech, CNRS, Inst Rech Chim Paris, F-75005 Paris, France

[3] Univ Guanajuato, Dept Quim Sede Pueblito Rocha, Guanajuato 36040, Guanajuato, Mexico

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2015年 / 209卷

关键词：

Room Temperature Ionic Liquids (RTIL); Cyanex; 272; Cyphos IL 101; Solvent extraction; Cobalt; Nickel; TEMPERATURE IONIC LIQUIDS; BIOPOLYMER CAPSULES; EXTRACTION; RECOVERY; NICKEL; COBALT; IL-101; MIXTURES; MEDIA;

D O I：

10.1016/j.molliq.2015.05.048

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This paper focuses on the separation of Co(II) from Ni(II) by liquid-liquid extraction using bis(2,4,4-trimethylpentyl)phosphinic acid (Cyanex 272) as extractant and trihexyl(tetradecyl)phosphonium chloride (Cyphos IL 101) as diluent. The influence of the temperature, the concentration of Cyanex 272 and the pH of the aqueous phase have been studied. The use of 0.5 mol L-1 Cyanex 272 in Cyphos IL 101 at 323.15 K leads to a fast and efficient extraction of Co(II) from chloride aqueous solution at pH 6 (90% Co(II) extracted) without significant extraction of Ni(II). Furthermore, 100% Co(II) can be stripped from Cyanex 272 + Cyphos IL 101 by using 0.1 mol L-1 sulphuric acid at 298.15 K. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：203 / 208

页数：6

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