Removal of chromium from aqueous solution by complexation - Ultrafiltration using a water-soluble macroligand

被引：67

作者：

Aliane, A

Bounatiro, N

Cherif, AT

Akretche, DE

机构：

[1] Ctr Dev Mat, Lab Anal & Traitement Effluents, Draria, Algeria

[2] USTHB, Lab Valorisat Minerais, El Alia, Algeria

来源：

WATER RESEARCH | 2001年 / 35卷 / 09期

关键词：

ultrafiltration; complexation; ligand-chromium;

D O I：

10.1016/S0043-1354(00)00501-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A process for purifying waste waters containing heavy and toxic metal such as chromium has been studied. A batch complexation-ultrafiltration process was used to concentrate and recover chromium from sulphate solution. As the chromium ions cli e tao small to be retained by the filter, they are fil st complexed with a water-soluble macroligand (polyethylene-imine), Factors affecting the rejection late and permeate flux such as pH, concentration ligand. chloride and sulphate concentration, membrane pore size, applied pressure and extraction factor were investigated. Best operating conditions can be obtained in order to achieve high levels of removal (>95%). Then, decomplexation is obtained so that metal can be separated from macroligand by second ultrafiltration plant to reuse the macroligand. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：2320 / 2326

页数：7

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