Removing Cd2+ by Composite Adsorbent Nano-Fe3O4/Bacterial Cellulose

被引：0

作者：

Lu Min ^{[1
]}

Guan Xiao-hui ^{[1
]}

Wei De-zhou ^{[2
]}

机构：

[1] NE Dianli Univ, Sch Chem Engn, Jilin 132012, Jilin, Peoples R China

[2] Northeastern Univ, Sch Resources & Civil Engn, Shenyang 110004, Peoples R China

来源：

CHEMICAL RESEARCH IN CHINESE UNIVERSITIES | 2011年 / 27卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Nano-Fe3O4; Bacterial cellulose; Composite adsorbent; Cadmium ion; ADSORPTION; DESORPTION; WATER;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new composite adsorbent, nano-Fe3O4/bacterial cellulose(BC), was prepared through blending method. The process of adsorbing Cd2+ including its isotherm and kinetics measured was studied. The results show that the adsorption efficiency is improved because of huge surface area and surface coordination of nano-Fe3O4 particles. Its adsorption capacity is 27.97 mg/g and the maximum of Cd2+ removal is 74%. The adsorption kinetics can be described by pseudo-second rate model and the adsorption equilibrium by Langmuir type. The superparamagnetism of nano-Fe3O4 particles can help to solve the difficult separation of single BC adsorbent and lead to the quick separation of composite adsorbent from the liquid if a magnetic field was applied. Cd2+ can be desorbed effectively by EDTA and HCl from the composite adsorbent, which can make it be reused.

引用

页码：1031 / 1034

页数：4

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