Immobilized chitosan as a selective absorbent for the nickel removal in water sample

作     者：WU Jian min, WANG Yong yao (Department of Chemistry, College of Science, Zhejiang University, Hangzhou 310027, China. ) 

作者机构：Department of Chemistry College of Science Zhejiang University Hangzhou 310027 Chin 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2003年第15卷第5期

页      面：633-638页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

主　　题：immobilized chitosan nickel wastewater treatment 

摘      要：Method for preparation of chitosan immobilized on silica gel(CTS silica) was described. The CTS silica was used as absorbent for the absorption of nickel in water. The results showed that this absorbent had relatively high selectivity and strong affinity to nickel. The maximum absorption capacity for nickel can reach 667 mg/g of chitosan. Factors that affect the absorption capacity, such as pH, ion strength and the presence of calcium, EDTA and the mechanism of absorption were discussed in detail. The absorbent can be regenerated with acid and reused for several times. The recovery rate for nickel can reach 99 99%. This absorbent filled in a column can be used in nickel removal from wastewater and drinking water.