Adsorptive Removal of Strontium from Aqueous Solution by Utilizing Pseudomonas Alcaligenes Biomass as Biosorbent

Author

Mao, Yan-li ; Wang, Xiao-tao ; Luo, Shi-Tian ; Liu, Wei-feng

Author_Institution

Dept. of Environ. & Municipal Eng., Henan Univ. of Urban Constr., Pingdingshan, China

Volume

1

fYear

2011

fDate

6-7 Jan. 2011

Firstpage

351

Lastpage

354

Abstract

The present study was undertaken to evaluate the feasibility of Pseudomonas alcaligenes biomass for the removal of strontium ions from aqueous solutions. Batch experiments were performed to study the adsorption of strontium on pH, Pseudomonas alcaligenes biomass adsorbent with respect to initial Sr(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 Sr(II) was 67.35 mg/g (pH 6.0 and 5 g·L^-1 biomass dose). Kinetics of adsorption followed second-order rate equations. The FTIR results of Pseudomonas alcaligenes 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 alcaligenes biomass can be used beneficially in treating industrial effluents containing heavy metal ions.

Keywords

Fourier transform spectra; adsorption; biotechnology; infrared spectra; microorganisms; reaction rate constants; renewable materials; strontium; wastewater treatment; FTIR; Freundlich isotherm model; Langmuir isotherm model; Pseudomonas alcaligenes biomass; adsorption kinetics; aqueous solution; biomass adsorbent; heavy metal ions; industrial effluents; maximum adsorption capacity; second-order rate equations; strontium adsorption; strontium ion removal; Biological system modeling; Biomass; Ions; Kinetic theory; Mathematical model; Strontium; Pseudomonas alcaligenes; adsorption isotherm; adsorption kinetics; biosorption; strontium;

fLanguage

English

Publisher

ieee

Conference_Titel

Measuring Technology and Mechatronics Automation (ICMTMA), 2011 Third International Conference on

Conference_Location

Shangshai

Print_ISBN

978-1-4244-9010-3

Type

conf

DOI

10.1109/ICMTMA.2011.89

Filename

5720792