Paper Title:

Biosorption of Cadmium onto Pseudomonas fluorescens: Application of Isotherm and Kinetic Models

Periodical Advanced Materials Research (Volumes 171 - 172)
Main Theme Engineering Materials, Energy, Management and Control
Edited by Zhihua Xu, Gang Shen and Sally Lin
Pages 49-52
DOI 10.4028/www.scientific.net/AMR.171-172.49
Citation Chang Li Yu et al., 2010, Advanced Materials Research, 171-172, 49
Online since December, 2010
Authors Chang Li Yu, Zhi Peng Lu, Fa Zhi Ge, Er Li Zhao
Keywords Adsorption Isotherm, Adsorption Kinetics, Biosorption, Cadmium (Cd), Pseudomonas fluorescens
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Abstract

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.