Studies on ion transport of some rare earth elements through solvating extractants immobilised on supported liquid membrane

被引：28

作者：

Chitra, KR ^{[1
]}

Gaikwad, AG ^{[1
]}

Surender, GD ^{[1
]}

Damodaran, AD ^{[1
]}

机构：

[1] CSIR,REG RES LAB,TRIVANDRUM 695019,KERALA,INDIA

来源：

JOURNAL OF MEMBRANE SCIENCE | 1997年 / 125卷 / 02期

关键词：

facilitated transport; liquid membranes; microporous and porous membranes; fibre membranes; solvating extractant;

D O I：

10.1016/S0376-7388(96)00208-6

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The studies on ion transport of terbium and dysprosium through a porous supported liquid membrane (SLM) containing TOPO (trioctyl phosphine oxide) and TBP (tributyl phosphate) as immobilised carriers have been carried out. The effect of stirring of bulk solutions on permeability coefficient has been investigated. The permeability coefficient increases with increase in pH of source phase from 0-6, and hydrogen ion concentration from 0.01 to 0.1 M of receiving solution. The dependency of permeability coefficient on the carrier concentration has been explored. The effect of ammonium thiocyanate concentration on permeability coefficient has been studied. In order to develop a method for enrichment of rare earth elements, further investigations were carried out by using a hollow fibre membrane extractor. The mechanism of ion transport of terbium and dysprosium in SLM systems has been explained.

引用

页码：257 / 268

页数：12

共 13 条

[1] THERMODYNAMIC PROPERTIES OF STRONG ELECTROLYTES IN AQUEOUS-SOLUTIONS [J].