Cobalt extraction and cobalt-nickel separation from a simulated industrial leaching liquor by liquid surfactant membranes using Cyanex 302 as carrier

被引:24
|
作者
Ribeiro, CP [1 ]
Costa, AOS [1 ]
Lopes, IPB [1 ]
Campos, FF [1 ]
Ferreira, AA [1 ]
Salum, A [1 ]
机构
[1] Univ Fed Minas Gerais, Dept Engn Quim, BR-30160030 Belo Horizonte, MG, Brazil
关键词
liquid membranes; facilitated transport; cobalt-nickel separation; Cyanex; 302;
D O I
10.1016/j.memsci.2004.03.038
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The application of liquid surfactant membranes (LSMs) for cobalt-nickel separation in a sulphuric liquor was investigated using bis(2,4,4-trimethylpentyl) monothiophosphinic acid, Cyanex 302, as carrier. A high nickel/cobalt initial concentration ratio was adopted for the external phase, namely 63.3:1, reproducing the one related to an industrial leaching liquor from a Brazilian company. The membrane phase was composed of the carrier, the surfactant ECA 4360 and the diluent Escaid 110, while, as internal phase, a 0.5 mol/l solution of sulphuric acid containing lithium as a tracer for membrane break-up was employed. For this system, the effects of extraction pH, external phase ionic strength and operating temperature were studied. (C) 2004 Elsevier B.V. All rights reserved.
引用
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页码:45 / 54
页数:10
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