Removal of perchlorate from aqueous solution by cross-linked Fe(Ⅲ)-chitosan complex  

作　　者：Long Lv Yanhua Xie Guoming Liu Guo Liu Jing Yu 

机构地区：[1]State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology

出　　处：《Journal of Environmental Sciences》2014年第4期792-800,共9页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51109019);the State Key Laboratory of Geohazard Prevention and Geoenvironment Protection(No.SKLGP2012Z009)

摘　　要：Cross-linked Fe（III）-chitosan composite （Fe-CB） was used as the adsorbent for removing perchlorate from the aqueous solution. The adsorption experiments were carried out by varying contact time, initial concentrations, temperatures, pH, and the presence of co-existing anions. The morphology of the adsorbent was discussed using FT-IR and SEM with X-EDS analysis. The pH ranging from 3.0-10.2 exhibited very little effect on the adsorption capability. The perchlorate uptake onto Fe-CB obeyed Langmuir isotherm model. The adsorption process was rapid and the kinetics data obeyed the pseudo second-order model well. The eluent of 2.5% （W/V） NaC1 could regenerate the exhausted adsorbent efficiently. The adsorption mechanism was also discussed.Cross-linked Fe（III）-chitosan composite （Fe-CB） was used as the adsorbent for removing perchlorate from the aqueous solution. The adsorption experiments were carried out by varying contact time, initial concentrations, temperatures, pH, and the presence of co-existing anions. The morphology of the adsorbent was discussed using FT-IR and SEM with X-EDS analysis. The pH ranging from 3.0-10.2 exhibited very little effect on the adsorption capability. The perchlorate uptake onto Fe-CB obeyed Langmuir isotherm model. The adsorption process was rapid and the kinetics data obeyed the pseudo second-order model well. The eluent of 2.5% （W/V） NaC1 could regenerate the exhausted adsorbent efficiently. The adsorption mechanism was also discussed.

关 键 词：cross-linked Fe（III）-chitosanadsorptionperchlorateregeneration 

分 类 号：X703[环境科学与工程—环境工程]