Removal of microcystin-LR from drinking water using a bamboo-based charcoal adsorbent modified with chitosan

作     者：Hangjun Zhang Guoying Zhu Xiuying Jia Ying Ding Mi Zhang Qing Gao Ciming Hu Shuying Xu 

作者机构：College of Biology and Environmental Sciences Hangzhou Normal University Hangzhou 310036 China Institute of Industry EP＆D Hangzhou 310005 China College of Environmental and Resource Sciences Zhejiang University Hangzhou 310058 China 

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

年 卷 期：2011年第23卷第12期

页      面：1983-1988页

核心收录：

学科分类：082903[工学-林产化学加工工程] 08[工学] 0829[工学-林业工程] 0815[工学-水利工程] 

基　　金：supported by the Program for Excellent Young Teachers in Hangzhou Normal University (No.JTAS 2011-01-012) the project of China Postdoctoral Science Foundation (No. 20070421175) the New Talents Plan Program of Zhejiang Province (No. 2010R421005) 

主　　题：adsorption bamboo charcoal chitosan microcystin-LR 

摘      要：A new kind of low-cost syntactic adsorbent from bamboo charcoal and chitosan was developed for the removal of microcystin-LR from drinking water. Removal effciency was higher for the syntactic adsorbent when the amount of bamboo charcoal was increased. The optimum dose ratio of bamboo charcoal to chitosan was 6：4, and the optimum amount was 15 mg/L; equilibrium time was 6 hr. The adsorption isotherm was non-linear and could be simulated by the Freundlich model （R2 = 0.9337）. Adsorption efficiency was strongly afflected by pH and natural organic matter （NOM）. Removal efficiency was 16% higher at pH 3 than at pH 9. Efficiency rate was reduced by 15% with 25 mg/L NOM （UV254 = 0.089 cm-1） in drinking water. This study demonstrated that the bamboo charcoal modified with chitosan can effectively remove microcystin-LR from drinking water.