2009•DOAJ (DOAJ: Directory of Open Access Journals)Open access

Biosorption of Cadmium(II) Ions by Saccharomyces cerevisiae Biomass from Aqueous Solutions

Farshid Ghorbani, Habibollah Younesi

Abstract

The biosorption of cadmium(II) ions onto Saccharomyces cerevisiae biomass from aqueous solutions was investigated. The cells were treated with 70% ethanol solution in order to increase the biosorption capacity of S. cerevisiae. The effect of solution pH, initial metal concentration and biomass dosage on biosorption by ethanol treated yeast was studied. Optima conditions of initial solution pH, Cd(II) ion concentration and biomass dosage were at 5, 37.5 mgL-1 and 0.1 gL-1, respectively. The Freundlich equation was applied to the experimental data. The maximum metal uptake value (qmax) was found as 25 mgg-1.

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Key concepts: Biosorption, Aqueous solution, Saccharomyces cerevisiae, Biomass (ecology), Cadmium, Chemistry, Ion, Nuclear chemistry