Bamboo-derived porous bioadsorbents and their adsorption of Cd(II) from mixed aqueous solutions

被引：13

作者：

OuYang, Xiao-Kun ^{[1
]}

Jin, Ru-Na ^{[1
]}

Yang, Le-Ping ^{[1
]}

Wang, Yang-Guang ^{[1
]}

Yang, Li-Ye ^{[1
]}

机构：

[1] Zhejiang Ocean Univ, Sch Food & Pharm, Zhoushan 316022, Peoples R China

来源：

RSC ADVANCES | 2014年 / 4卷 / 54期

基金：

星火计划;

关键词：

HEAVY-METAL IONS; FIRMIANA SIMPLEX LEAF; ENZYMATIC-HYDROLYSIS; AMINO-ACID; ACTIVATED CARBON; WASTE-WATER; FIXED-BED; REMOVAL; PB(II); CELLULOSE;

D O I：

10.1039/c4ra03422h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two porous bioadsorbents were successfully prepared from the partial enzymatic hydrolysis of bamboo and subsequent chemical modification with succinic anhydride. We investigated the abilities of the partially enzymatically hydrolyzed bamboo (PEB) and the porous succinylated bamboo (PSB) to adsorb Cd(II) from a solution containing sodium chloride and an amino acid. The partial enzymatic hydrolysis created many pores within the raw bamboo, and both the porous structure and the post-succinylation carboxyl group content were important for high adsorption capacity. The presence of sodium chloride and the amino acid markedly decreased the adsorption capacities of the bioadsorbents. The experimental data could be described perfectly with the Langmuir adsorption isotherm model and pseudo second-order kinetics model. Even in solutions containing sodium chloride and arginine, the maximum Cd(II) adsorption capacities at 303 K were 38.18 and 120.34 mg g(-1) for PEB and PSB, respectively.

引用

页码：28699 / 28706

页数：8

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