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

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 a...

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Bibliographic Details
Published in:环境科学学报：英文版 2014 (4), p.792-800
Main Author: Long Lv Yanhua Xie Guoming Liu Guo Liu Jing Yu
Format: Article
Language:English
Subjects:
III
Langmuir
交联
水溶液
脱乙酰壳多糖
配合物
高氯酸盐
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Summary: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.
ISSN:1001-0742
1878-7320