Adsorption of Pb2+ and Cd2+ onto a Novel Activated Carbon-Chitosan Complex

被引：51
|
作者：
Ge, Huacai [1 ]
Fan, Xiaohe [1 ]
机构：
[1] S China Univ Technol, Coll Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China
来源：
CHEMICAL ENGINEERING & TECHNOLOGY | 2011年 / 34卷 / 10期
关键词：
Adsorption; Chitosan; Activated carbon; Microwave irradiation; Heavy metals; CROSS-LINKED CHITOSAN; AQUEOUS-SOLUTION; PB(II) IONS; METAL-IONS; REMOVAL; CADMIUM; CU(II); LEAD; EQUILIBRIUM; KINETICS;
D O I：
10.1002/ceat.201000182
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A novel activated carbon-chitosan complex adsorbent (ACCA) was prepared via the crosslinking of glutaraldehyde and activated carbon-(NH2-protected) chitosan complex under microwave irradiation. The surface morphology of this adsorbent was characterized. The adsorption of ACCA for Pb2+ and Cd2+ was investigated. The results demonstrate that ACCA has higher adsorption capacity than chitosan. The adsorption follows pseudo first-order kinetics. The isotherm adsorption equilibria are better described by Freundlich and Dubinin-Radushkevich isotherms than by the Langmuir isotherm. The adsorbent can be recycled. These results have important implications for the design of low-cost and effective adsorbents in the removal of heavy metal ions from wastewaters.
引用
收藏
页码：1745 / 1752
页数：8
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