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

被引:49
|
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
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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