Adsorption of Cu2+, Cd2+and Pb2+in wastewater by modified chitosan hydrogel

被引：33
作者：
Hao, Dongliang [1 ]
Liang, Yali [2 ]
机构：
[1] Hebei Univ Environm Engn, Qinhuangdao 066102, Hebei, Peoples R China
[2] Biol Inst Shanxi, Taiyuan, Peoples R China
来源：
ENVIRONMENTAL TECHNOLOGY | 2022年 / 43卷 / 06期
关键词：
Chitosan; hydrogel; adsorption; heavy metal ions; HEAVY-METAL IONS; AQUEOUS-SOLUTIONS; REMOVAL; MICROSPHERES; PERFORMANCE; ADSORBENT; CU(II);
D O I：
10.1080/09593330.2020.1807612
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Heavy metal pollution is extraordinary critical, so it is urgent to develop an effective adsorbent to dispose of such pollution. Modified chitosan was combined with polyacrylic acid to form N-carboxymethyl chitosan hydrogel (NCS-hydrogel) adsorbent. The morphology and structure of NCS-hydrogel were analyzed and identified by infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis and other characterization methods. NCS-hydrogel adsorption was used to treat water pollution of Cu, Cd and Pb ions, and the influencing factors of adsorption performance were studied. The intrinsic mechanism of adsorption process was discussed by thermodynamic, kinetic and isotherm models. The results show that the adsorption process of metal ions by NCS-hydrogel meets the spontaneous monolayer chemisorption, and the adsorption process is accompanied by heat release.
引用
收藏
页码：876 / 884
页数：9
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