Kinetic studies of copper(II) extraction from EDTA-bearing solutions by Aliquat 336 using a membrane cell

被引：8

作者：

Juang, RS ^{[1
]}

Huang, IP ^{[1
]}

机构：

[1] Yuan Ze Univ, Dept Chem Engn, Chungli 320, Taiwan

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2000年 / 35卷 / 06期

关键词：

extraction kinetics; copper(II); EDTA; Aliquat; 336; membrane-based stirred cell;

D O I：

10.1081/SS-100100198

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The kinetics of extraction of copper(II) from aqueous solutions containing an equimolar amount of EDTA (ethylenediaminetetraacetic acid) with Aliquat 336 (a quaternary amine) in kerosene were studied using a microporous membrane-based stirred cell. This device could give the intrinsic reaction rate for the formation of the amine complex occurring at or near the organic-aqueous interface by eliminating the diffusion resistances. Experiments were performed as a function of aqueous pH (3-11), copper(II) concentration (0.79-3.14 mol.m(-3)), Aliquat 336 concentration (50-500 mol.m(-3)), and temperature (288-318 K). The experimental results showed that Aliquat 336 would adsorb at the interface and react with the Cu-EDTA chelated anions.

引用

页码：869 / 881

页数：13

共 23 条

[1] Laboratory investigation of heavy metal removal by soil washing [J].