Iron(III) transport using a supported liquid membrane containing Cyanex 921

被引：32

作者：

Alguacil, FJ ^{[1
]}

Alonso, M ^{[1
]}

机构：

[1] CSIC, Ctr Nacl Invest Met, Madrid 28040, Spain

来源：

HYDROMETALLURGY | 2000年 / 58卷 / 01期

关键词：

iron(III) transport; Cyanex; 921; mass transfer coefficient;

D O I：

10.1016/S0304-386X(00)00133-X

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A study of iron(III) transport through a solid-supported liquid membrane using the phosphine oxide Cyanex 921 as carrier has been carried out using batch experiments. A model is reported describing the transport mechanism which consists of a diffusion process through a source aqueous diffusion layer, a fast interfacial chemical reaction and diffusion of HFeCl4 . L-2 (L, the extractant) through the membrane. The transport system is studied as a function of several variables, such as the diluent of the organic phase, metal concentration in the source phase, etc., along with the composition of the receiving solution. The mass transfer coefficient was calculated from the model as 23 mu m/s and the thickness of the source aqueous boundary layer was calculated to be 44 mu m. The behaviour of Cyanex 921 has been studied with respect to other organophosphorus extractants and also the selectivity of the membrane-carrier system on various metal-bearing aqueous solutions. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：81 / 88

页数：8

共 16 条

[1] INFLUENCE OF MEMBRANE SOLVENT ON STRONTIUM TRANSPORT FROM REPROCESSING CONCENTRATE SOLUTIONS THROUGH FLAT-SHEET-SUPPORTED LIQUID MEMBRANES [J].