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

作者：Ge Huacai^*; Fan Xiaohe

来源：CHEMICAL ENGINEERING & TECHNOLOGY, 2011, 34(10): 1745-1752.

DOI：10.1002/ceat.201000182

• Adsorption
• Chitosan
• Activated carbon
• Microwave irradiation
• Heavy metals

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.

• 出版日期2011-10
• 单位华南理工大学