Fast and effective removal of cadmium ion from water using chitosan encapsulated magnetic Fe3O4 nanoparticles

被引：15

作者：

Xu, Lili ^{[1
]}

Chen, Jie ^{[1
]}

Wen, Yuezhong ^{[1
]}

Li, Hong ^{[2
]}

Ma, Jianqing ^{[1
]}

Fu, Dongmei ^{[3
]}

机构：

[1] Zhejiang Univ, Coll Environm & Resource Sci, Inst Environm Sci, Hangzhou 310058, Zhejiang, Peoples R China

[2] Wenzhou Vocat Coll Sci & Technol, Wenzhou 325006, Peoples R China

[3] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

来源：

DESALINATION AND WATER TREATMENT | 2016年 / 57卷 / 18期

基金：

美国国家科学基金会;

关键词：

Magnetic chitosan; Cd(II); Modification; Adsorption; HEAVY-METAL IONS; AQUEOUS-SOLUTION; WASTE-WATER; EFFICIENT REMOVAL; ACTIVATED CARBON; CD(II) REMOVAL; ADSORPTION; LEAD; SORPTION; DYES;

D O I：

10.1080/19443994.2015.1019369

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A novel CS2-modified chitosan encapsulated magnetic Fe3O4 nanoparticles (CMCS@Fe3O4) was prepared for the removal of Cd(II) from aqueous solution. The adsorption behavior of the CMCS@Fe3O4 toward Cd(II) was studied using batch method. The CMCS@Fe3O4 showed a rapid process and a superior adsorption capacity for Cd(II). The adsorption kinetics followed the pseudo-second-order and the equilibrium data were well described by the Langmuir isotherm for the CMCS@Fe3O4. The maximum adsorption capacity of CMCS@Fe3O4 for Cd(II) was 200mgg(-1) from the Langmuir isotherm. Based on Fourier transform infrared spectroscopy analysis, the -NH2 and -SH groups on the CMCS@Fe3O4 mainly participated in the Cd(II) adsorption process. In addition, the common coexisting ions had a negligible impact on Cd(II) adsorption on the CMCS@Fe3O4. Overall, the results reported herein indicated that the CMCS@Fe3O4 is very attractive and implies a potential of practical application for the removal of toxic heavy metals.

引用

页码：8540 / 8548

页数：9

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