Carboxymethylated-bacterial cellulose for copper and lead ion removal

被引：215

作者：

Chen, Shiyan ^{[1
]}

Zou, Yu ^{[1
]}

Yan, Zhiyong ^{[1
]}

Shen, Wei ^{[1
]}

Shi, Shuaike ^{[1
]}

Zhang, Xiang ^{[1
]}

Wang, Huaping ^{[1
]}

机构：

[1] Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 161卷 / 2-3期

关键词：

Ion removal; Bacterial cellulose; Carboxymethylated-bacterial cellulose; Adsorption kinetics; Adsorption isotherm; AQUEOUS-SOLUTION; HEAVY-METALS; ADSORPTION; WATER; ADSORBENT; SAWDUST;

D O I：

10.1016/j.jhazmat.2008.04.098

中图分类号：

X [环境科学、安全科学];

学科分类号：

083001 [环境科学];

摘要：

Carboxymethylated-bacterial cellulose (CM-BC) was synthesized by Acetobacter xylinum by adding water-soluble carboxymethylated cellulose (CMC) in the culture medium. The CM-BC was examined for the removal of copper and lead ions from aqueous solution compared with BC. The effects of performance parameters such as pH, adsorbent dose, contact time on copper and lead ion adsorption were analyzed. Both BC and CM-BC show good adsorption performance at optimized pH 4.5. Compared with BC, CM-BC performs better adsorption, with the value of 9.67 mg (copper)/g, 22.56 mg (lead)/g for BC and 12.63 mg (copper)/g, 60.42 mg (lead)/g for CM-BC, respectively. The adsorption rate closely follows pseudo-second-order rate model and the adsorption isotherm data well follows the Langmuir model. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.

引用

页码：1355 / 1359

页数：5

共 38 条

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