Removal of perchlorate from aqueous solution by cross-linked Fe(III)-chitosan complex
Removal of perchlorate from aqueous solution by cross-linked Fe(III)-chitosan complex
复制标题
交联 Fe(III)-壳聚糖复合物去除水溶液中的高氯酸盐
DOI：
10.1016/s1001-0742(13)60519-7
复制
发表时间：
2014-04-01
影响因子：
6.9
通讯作者：
Yu, Jing
中科院分区：
文献类型：
--
作者：
Lv, Long;Xie, Yanhua;Yu, Jing
采用交联Fe（III）-壳聚糖复合物（Fe-CB）作为吸附剂，对水中的高氯酸盐进行了吸附研究。通过改变接触时间、初始浓度、温度、pH和共存阴离子的存在进行吸附实验。利用FT-IR、SEM和X-EDS对吸附剂的形貌进行了表征。pH在3.0-10.2范围内对吸附能力的影响很小。Fe-CB对高氯酸根的吸附符合Langmuir吸附等温式。吸附过程迅速，动力学符合准二级动力学模型。2.5%（W/V）NaCl洗脱液能有效地再生吸附剂。并对吸附机理进行了探讨。
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) NaCl could regenerate the exhausted adsorbent efficiently. The adsorption mechanism was also discussed.