Biosorption of Cd2+ and Cu2+ on immobilized Saccharomyces cerevisiae

Autor: Xiulan Zhao, Fengyu Zan, Shou-Liang Huo, Beidou Xi
Rok vydání: 2011
Předmět:
Zdroj: Frontiers of Environmental Science & Engineering. 6:51-58
ISSN: 2095-221X
2095-2201
DOI: 10.1007/s11783-011-0206-9
Popis: The biosorption of Cd2+ and Cu2+ onto the immobilized Saccharomyces cerevisiae (S. cerevisiae) was investigated in this study. Adsorption kinetics, isotherms and the effect of pH were studied. The results indicated that the biosorption of Cd2+ and Cu2+ on the immobilized S. cerevisiae was fast at initial stage and then became slow. The maximum biosorption of heavy metal ions on immobilized S. cerevisiae were observed at pH 4 for Cd2+ and Cu2+. by the pseudo-second-order model described the sorption kinetic data well according to the high correlation coefficient (R 2) obtained. The biosorption isotherm was fitted well by the Langmuir model, indicating possible mono-layer biosorption of Cd2+ and Cu2+ on the immobilized S. cerevisiae. Moreover, the immobilized S. cerevisiae after the sorption of Cd2+ and Cu2+ could be regenerated and reused.
Databáze: OpenAIRE