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

查看全文 作　　者：Hangjun [1,3]Zhang;Guoying [2]Zhu;Xiuying [1]Jia;Ying [1]Ding;Mi [1]Zhang;Qing [1]Gao;Ciming [1]Hu;Shuying [3]Xu

机构地区：[1]College of Biology and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China;[2]Institute of Industry EP&D, Hangzhou 310005, China;[3]College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China

出　　处：《Journal of Environmental Sciences》索引2011年第23卷第12期,共6页

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) 摘　　要：A new kind of low-cost syntactic adsorbent from bamboo charcoal and chitosan was developed for the removal of microcystin-LRfrom 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. 关键词：微囊藻毒素-LR 改性壳聚糖饮用水吸附剂 FREUNDLICH模型木炭吸附等温线天然有机物

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

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