versión On-line ISSN 0718-0764
RODRIGUEZ, María E; MIRANDA, Rosa C; OLIVAS, Rolando y SOSA, César A. Effects of the Operating Conditions on the Biosorption of Pb2+, Cd2+ y Cr3+ in Solution by Residual Saccharomyces cerevisiae. Inf. tecnol. [online]. 2008, vol.19, n.6, pp.47-55. ISSN 0718-0764. http://dx.doi.org/10.4067/S0718-07642008000600006.
This paper presents a study on the effects of some variables on the adsorption process of heavy metal ions in polluted wastewaters. The effects of pH, ion concentration, biomass concentration and pre-treatment of the biomass on the biosorption process of Pb2+, Cd2+ y Cr3+ in artificial solutions using non-living Saccharomyces cerevisiae were evaluated. It was observed that pH, biomass concentration and biomass pretreatment had a significant effect on the biosorption of Pb2+. For the adsorption of Cr3+ the only important factors were pH and concentration biomass, while for Cd2+ biosorption the effects of biomass concentration, pH and the presence of co-ions in the solution were significant.
Palabras clave : adsorption; Saccharomyces cerevisiae; heavy metals; polluted wastewaters.