Biosorption of cadmium onto Pseudomonas fluorescens: Application of isotherm and kinetic models

被引：9
|
作者：
Yu Changli [1 ]
Lu Zhipeng [2 ]
Ge Fazhi [3 ]
Zhao Erli [2 ]
机构：
[1] Pingdingshan Univ, Dept Environm & Geog Sci, Pingdingshan 467001, Henan, Peoples R China
[2] Construct Engn Qual Super Station Pingdingshan, Pingdingshan 467001, Henan, Peoples R China
[3] Urban Planning Design Inst Pingdingshan, Pingdingshan 467001, Henan, Peoples R China
来源：
ACHIEVEMENTS IN ENGINEERING MATERIALS, ENERGY, MANAGEMENT AND CONTROL BASED ON INFORMATION TECHNOLOGY, PTS 1 AND 2 | 2011年 / 171-172卷
关键词：
Pseudomonas fluorescens; biosorption; cadmium; adsorption kinetics; adsorption isotherm; AQUEOUS-SOLUTION; SORPTION; REMOVAL; CU(II); CD(II);
D O I：
10.4028/www.scientific.net/AMR.171-172.49
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The present study was undertaken to evaluate the feasibility of Pseudomonas fluorescens biomass for the removal of cadmium ions from aqueous solutions. Batch experiments were performed to study the adsorption of cadmium on pH, Pseudomonas fluorescens biomass adsorbent with respect to initial Cd(II) concentration, contact time and biomass dose. The experimental data were modeled by Langmuir and Freundlich isotherm models. Langmuir model resulted in the best fit of the adsorption data. The maximum adsorption capacity for Cd(II) was 66.25 mg/g (pH 5.0 and 5 g/L biomass dose). Kinetics of adsorption followed second-order rate equations. The FTIR results of Pseudomonas fluorescens biomass showed that biomass has different functional groups and these functional groups are able to react with metal ion in aqueous solution. The results of the present study suggest that Pseudomonas fluorescens biomass can be used beneficially in treating industrial effluents containing heavy metal ions.
引用
收藏
页码：49 / +
页数：2
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