Adsorption of heavy metal ions by cross-linked CS/PVA membranes

被引：0
|
作者：
Zeng R. [1 ]
Liu J.-W. [1 ]
Zhao D.-H. [1 ]
Wang Y.-Y. [1 ]
Zhang H.-P. [1 ]
Yang Z.-H. [2 ]
机构：
[1] College of Chemistry and Chemical Engineering, Hubei University, Wuhan
[2] School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan
来源：
Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2020年 / 34卷 / 06期
关键词：
Chitosan; Cross-linked membrane; Heavy metal ion adsorption; Polyvinyl alcohol;
D O I：
10.3969/j.issn.1003-9015.2020.06.026
中图分类号：
学科分类号：
摘要：
Chitosan (CS) and polyvinyl alcohol (PVA) blend membranes were prepared by phase inversion with acetic acid and water as solvents to obtain a cheap, environmental friendly and easy recyclable heavy metal ion adsorbent. CS/PVA cross-linked membranes were prepared by epichlorohydrin under alkaline conditions. The Cu2+ and Ni2+ adsorption characteristics, regeneration properties and adsorption kinetics of the prepared cross-linked CS/PVA membranes were studied. Experimental results indicate that the adsorption of Cu2+ and Ni2+ on the cross-linked CS/PVA membrane was best fitted by Langmuir-Freundlich adsorption model. The saturated adsorption capacities of the cross-linked CS/PVA membranes to Cu2+ and Ni2+ were 52.06 and 19.05 mg∙g-1, respectively, which were higher than many adsorbents. The membranes could be easily regenerated. The results show that the prepared CS/PVA cross-linked membrane is a heavy metal ion adsorption material with excellent properties, which can provide a new way for the treatment of heavy metal ion pollutants in wastewater. © 2020, Editorial Board of Journal of Chemical Engineering of Chinese Universities". All right reserved."
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页码：1536 / 1544
页数：8
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