Polyethyleneimine-bacterial cellulose bioadsorbent for effective removal of copper and lead ions from aqueous solution

被引：162

作者：

Jin, Xuchen ^{[1
]}

Xiang, Zhouyang ^{[1
]}

Liu, Qingguo ^{[2
]}

Chen, Yong ^{[2
]}

Lu, Fachuang ^{[1
]}

机构：

[1] South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China

[2] Nanjing High Tech Univ Biol Technol Res Inst Co L, Nanjing 211899, Jiangsu, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2017年 / 244卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Adsorption; Bacterial cellulose; Bioadsorbent; Polyethyleneimine; Heavy metal ion; HEAVY-METAL IONS; WASTE-WATER; CORN STALK; ADSORPTION; ADSORBENT; PB(II); CU(II); KINETICS; CR(III); SAWDUST;

D O I：

10.1016/j.biortech.2017.08.072

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Bacterial cellulose (BC) is a green biopolymer suitable for heavy metal ion removal from aqueous solution due to its nano-porous microstructure. Polyethyleneimine-bacterial cellulose (PEI-BC) was prepared by reductive amination of dialdehyde BC with polyethyleneimine. The capacity of PEI-BC in Cu(II) and Pb(II) adsorption from aqueous solution was investigated. The adsorption kinetics could be well expressed by pseudo-second-order model and the adsorption isotherm data were well fitted with Freundlich model. Adsorption processes of Cu(II) and Pb(II) by PEI-BC reached equilibrium very rapid in 30 and 60 min, respectively. The maximum adsorption capacity of PEI-BC on Cu(II) and Pb(II) was found to be 148 and 141 mg/g, respectively, which was higher than that of unmodified BC and other modified BC reported. PEI-BC also showed good reusability in the adsorption of Cu(II) and Pb(II). This study demonstrates that polyethyleneimine modification makes BC a potential bioadsorbent for heavy metal ion removal in waste water.

引用

页码：844 / 849

页数：6

共 35 条

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