| Removal of perchlorate from aqueous solution by cross-linked Fe(Ⅲ)-chitosan complex |
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| 作者姓名： | Long Lv Yanhua Xie Guoming Liu Guo Liu Jing Yu |
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| 作者单位： | State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China (No. 51109019) and the State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (No. SKLGP2012Z009). |
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| 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.
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| 关 键 词： | 高氯酸盐 脱乙酰壳多糖 III 水溶液 Fe 交联 配合物 Langmuir |
| 收稿时间： | 19 June 2013 |
| 修稿时间： | 10 November 2013 |
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