Bioadsorption characteristics of Pseudomonas aeruginosa PAOI

Journal of the Serbian Chemical Society

卷:79

Pernyeszi Tímea¹  Kilár Ferenc²  Kőnig-Péter Anikó³  Kocsis Béla⁴ 

[1] Department of Analytical and Environmental Chemistry, Faculty of Science, Pécs, Hungary + Analytical Chemistry and Geoanalytical Research Group, Szentágothai Research Center, University of Pécs, Pécs, Hungary;

[2] Institute of Bioanalysis, University of Pécs, Faculty of Medicine, Szigeti, Pécs, Hungary + Analytical Chemistry and Geoanalytical Research Group, Szentágothai Research Center, University of Pécs, Pécs, Hungary;

[3] Institute of Bioanalysis, University of Pécs, Faculty of Medicine, Szigeti, Pécs, Hungary;

[4] Institute of Medical Microbiology and Immunology, University of Pécs, Faculty of Medicine, Pécs, Hungary;

关键词: heavy metals;    kinetics;    isotherm;    temperature;    atomic absorption spectrometer;   

DOI  :  10.2298/JSC130314070K

来源: DOAJ

【 摘 要 】

Biosorption of Cd(II) and Pb(II) ions from aqueous solution using lyophilized Pseudomonas aeruginosa (PAOI) cells were observed under various experimental conditions. The effect of pH, initial metal concentration, equilibration time and temperature on bioadsorption was investigated. The optimum pH value for Pb(II) adsorption was found to be 5.0, and for Cd(II) 5.0 − 6.0. The Pb(II) and Cd(II) bioadsorption equilibrium were analyzed by using Freundlich and Langmuir model using nonlinear least-squares estimation. The experimental maximum uptake capacity of Pb(II) and Cd(II) was estimated to be 164 mg g-1 and 113 mg g-1, respectively. For biosorption kinetic study the pseudo second-order kinetic model was applied at various temperatures. The temperature had no significant effect on Pb(II) bioadsorption. In case of Cd(II) bioadsorption the adsorbed amount decreased with increasing temperature.

【 授权许可】

Unknown