EXTRACTION OF DIVALENT METALS WITH BIS (2,4,4-TRIMETHYLPENTYL) PHOSPHINIC ACID

被引：47

作者：

SASTRE, AM

MIRALLES, N

FIGUEROLA, E

机构：

[1] Departament d’Enginyeria Química, Escola Técnica, Superior d’Enginyers Industrials de Barcelona (U.P.C.), 08028, Barcelona

来源：

SOLVENT EXTRACTION AND ION EXCHANGE | 1990年 / 8卷 / 4-5期

关键词：

Divalent Metals - Metal Nitrates - Phosphinic Acid - Sodium Hydroxide - Sodium Nitrate;

D O I：

10.1080/07366299008918019

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The extraction of Cd(II), Cu(Il) and Zn(II) from 0.1 mol dm-3 aqueous nitrate solutions with bis(2,4,4-trimethylpentyl)phosphinic acid (HBTMPP) dissolved in Isopar-H has been studied with relation to the total extractant concentration, the equilibrium pH and the total metal concentration in the aqueous phase. The stoichiometry of the extracted species and their equilibrium constants have been determined by graphical and numerical methods and appear to be CdA2(HA)2 and CdA2(HA)3 for Cd(Il), CuA2 (HA)2 for Cu(II) and ZnAzHA and ZnA2(HA)a for Zn(II). The extraction efficiency follows the order Zn(II)>Cu(II)>Cd(II). © 1990, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：597 / 614

页数：18

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