文献类型：期刊文献

英文题名：Facile fabrication of polyacrylic acid functionalized carboxymethyl chitosan microspheres for selective and efficient removal of Ni(II) from multicomponent wastewater

作者：Tian, Tao[1];Bai, Zhishan[1];Wang, Bingjie[1];Zhao, Shenghao[1];Zhang, Yong[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2020

卷号：597

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：;EI(收录号：20201708571995);WOS:【SCI-EXPANDED(收录号:WOS:000536504900002)】；

基金：This work is supported by National Natural Science Foundation of China51578239, 21878099, 51608203, and China Postdoctoral Science Foundation (2019TQ0094).

语种：英文

外文关键词：Carboxymethyl chitosan; Wastewater treatment; Polyacrylic acid grafting; Ni(II) removal; Selective adsorption

摘要：The unpurified discharge of highly toxic Ni(II)-contained wastewater represents a serious threat to ecological environment and human health. In this study, a novel polyacrylic acid (PAA) functionalized carboxymethyl chitosan microspheres (PAA-CMCs), synthesized by grafting copolymerization method, was used to removal Ni (II) from wastewater. The PAA-CMCs was characterized by SEM, elemental analyzer, FT-IR and XPS. The equilibrium data was better described by L-F model with high coefficients of determination (R-2 > 0.991). Meanwhile, the maximum Ni(II) adsorption capacity of PAA-CMCs deduced from L-F model was as high as 200.588 mg g(-1). Moreover, the selective capacity was investigated by batch adsorption experiments and its mechanism was revealed by electronegativity and electrophilic index. Besides, the excellent regeneration performance of PAA-CMCs was verified after six adsorption-desorption cycles. Thus, the newly developed PAA-CMCs is a promising candidate for deep treatment of heavy metal-contained wastewater.