Electro-assisted solvent extraction of Cu2+, Ni2+ and Cd2+

被引：22

作者：

Bustero, I

Cheng, YF

Mugica, JC

Fernandez-Otero, T

Silva, AF

Schiffrin, DJ

机构：

[1] Univ Liverpool, Dept Chem, Liverpool L69 3BX, Merseyside, England

[2] INASMET, Ctr Tecnol Mat, San Sebastian 20009, Spain

[3] Univ Basque Country, Fac Quim, San Sebastian 20080, Spain

[4] Fac Ciencias, Ctr Invest Quim, P-4150 Porto, Portugal

来源：

ELECTROCHIMICA ACTA | 1998年 / 44卷 / 01期

关键词：

liquid-liquid interfaces; solvent extraction; ion transfer; two-phase electrochemistry; immiscible electrolytes;

D O I：

10.1016/S0013-4686(98)00149-2

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel separation method, i.e. electro-assisted solvent extraction, based on the principles of two-phase electrochemistry, has been demonstrated for the successful separation of Ni2+, Cu2+ and Cd2+ ions. 2-Heptanone has been used as the organic solvent for the transfer of Ni2+, Cu2+ and Cd2+ facilitated by 2,2';6',2 "-terpyridine. It is shown that extraction efficiency depends on the concentration ratio of ligand to metal ion and importantly, on the applied interfacial potential difference. Tt was Found that Ni2+ (not Cd2+ or Cu2+) extraction is suppressed in the presence of Mg2+ ion due to competitive complexation. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：29 / 38

页数：10

共 32 条

[1] TRANSFER OF TRANSITION-METAL TERPYRIDINE COMPLEXES ACROSS THE WATER NITROBENZENE INTERFACE [J].