Removal of Cu2+ and turbidity from wastewater by mercaptoacetyl chitosan

被引：72

作者：

Chang, Qing ^{[1
]}

Zhang, Min ^{[1
]}

Wang, Jinxi ^{[1
]}

机构：

[1] Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, Lanzhou 730070, Gansu, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 169卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

Flocculation; Mercaptoacetyl chitosan; Copper; Chitosan; Mercaptoacetic acid; PROTEINS;

D O I：

10.1016/j.jhazmat.2009.03.144

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A macromolecule heavy metal flocculant mercaptoacetyl chitosan (MAC) was prepared by reacting chitosan with mercaptoacetic acid. In preliminary experiments, the flocculation performance of MAC was evaluated by using wastewater containing Cu2+ or/and turbidity. Some factors which affect the removal of Cu2+ and turbidity were also studied. The experimental results showed that: (1) MAC can remove both Cu2+ and turbidity from wastewater. The removal efficiency of Cu2+ by using MAC combined with hydrolyzed polyacrylamide is higher than that by only using MAC, the removal efficiency of Cu2+ reaches above 98%; (2) when water sample containing not only Cu2+ but also turbidity-causing substance, the removal efficiency of both Cu2+ and turbidity will be promoted by the cooperation effect of each other, the residual concentration of Cu2+ reaches below 0.5 mgL(-1) and the turbidity reaches below 3 NTU, Cu2+ is more easily removed by MAC when turbidity is higher: (3) the removal efficiency of Cu2+ increases with the increase in pH value, contrarily removal efficiency of turbidity decreases with the increase in pH value. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：621 / 625

页数：5

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