title: Removal of perchlorate from aqueous solution by cross-linked Fe(III)-chitosan complex.
abstract: 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.
authors: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China. Electronic address: lulong1989@yahoo.com.cn.
authors: Long
authors: L
authors: Lv
authors: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China. Electronic address: eesxyh@gmail.com.
authors: Yanhua
authors: Y
authors: Xie
authors: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China.
authors: Guoming
authors: G
authors: Liu
authors: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China.
authors: Guo
authors: G
authors: Liu
authors: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China.
authors: Jing
authors: J
authors: Yu
mesh_terms: D000327:Adsorption; D048271:Chitosan / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D010472:Perchlorates / Q000302:isolation & purification*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D005290:Ferric Compounds; D010472:Perchlorates; D014874:Water Pollutants, Chemical; D048271:Chitosan; C494474:perchlorate
keywords: adsorption; cross-linked Fe(III)-chitosan; perchlorate; regeneration