Viability of the separation of Cd from highly concentrated Ni-Cd mixtures by non-dispersive solvent extraction

被引：24

作者：

Galan, B ^{[1
]}

San Roman, F ^{[1
]}

Irabien, A ^{[1
]}

Ortiz, I ^{[1
]}

机构：

[1] ETSIIyT, Dept Quim, Santander 39005, Spain

来源：

CHEMICAL ENGINEERING JOURNAL | 1998年 / 70卷 / 03期

关键词：

cadmium (Cd); non-dispersive solvent extraction; nickel (Ni);

D O I：

10.1016/S1385-8947(98)00101-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The separation of nickel and cadmium from highly concentrated solutions by means of non-dispersive solvent extraction (NDSX) has been studied in this work. Extraction and back-extraction processes were carried out simultaneously in a batch mode using two parallel modules and the organic phase flowing in a closed circuit. Starting with concentrations of 0.37 M of Cd and 0.37-0.68 M of Ni in the feed aqueous phase, 1 M of H2SO4 in the back-extraction phase, and using D2EHPA as extractant, the viability of the separation-concentration of Cd from that mixture has been confirmed. Under the experimental conditions, the separation process was run at a constant rate of mass transport, thus leading to a selectivity factor in the concentration step rho=67 mol Cd/mol Ni. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：237 / 243

页数：7

共 22 条

[1] LIQUID LIQUID EXTRACTION AND STRIPPING OF GOLD WITH MICROPOROUS HOLLOW FIBERS [J].