Hydrazinolyzed cellulose-g-polymethyl acrylate as adsorbent for efficient removal of Cd(II) and Pb(II) ions from aqueous solution

被引：4

作者：

Jia, Qiujin ^{[1
]}

Zhang, Wanting ^{[1
]}

Li, Dongping ^{[1
]}

Liu, Yulong ^{[1
]}

Che, Yuju ^{[1
]}

Ma, Qinglin ^{[1
]}

Meng, Fanjun ^{[1
]}

机构：

[1] Shandong Univ Weihai, Marine Coll, Weihai 264209, Peoples R China

来源：

WATER SCIENCE AND TECHNOLOGY | 2017年 / 75卷 / 05期

关键词：

adsorption; cadmium(II); cellulose; hydrazinolyzed cellulose-g-polymethyl acrylate (Cell-g-PMA-HZ); lead(II); HEAVY-METAL IONS; EMPTY FRUIT BUNCH; ADSORPTION; CU(II); NI(II); KINETICS;

D O I：

10.2166/wst.2016.581

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Hydrazinolyzed cellulose-graft-polymethyl acrylate (Cell-g-PMA-HZ), an efficient adsorbent for removal of Cd(II) and Pb(II) from aqueous solution, has been prepared by ceric salt-initiated graft polymerization of methyl acrylate from microcrystalline cellulose surface and subsequent hydrazinolysis. The influences of initial pH, contact time, and temperature on adsorption capacity of Cell-g-PMA-HZ as well as adsorption equilibrium, kinetic and thermodynamic properties were examined in detail. As for Cd(II) adsorption, kinetic adsorption can be explained by pseudo-secondorder, while adsorption isotherm fits well with Langmuir isotherm model, from which maximum equilibrium adsorption capacity can be derived as 235.85 mg g(-1) at 28 degrees C. Further thermodynamic investigation indicated that adsorption of Cd(II) by adsorbent Cell-g-PMA-HZ is endothermic and spontaneous under studied conditions. On the other hand, isotherm of Pb(II) adsorption fits well with Freundlich isotherm model and is more likely to be a physical-adsorption-dominated process. Consecutive adsorption-desorption experiments showed that Cell-g-PMA-HZ is reusable with satisfactory adsorption capacity.

引用

页码：1051 / 1058

页数：8

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