Kinetics and isotherm adsorption of nickel and zinc by yeast Saccharomyces carlsbergensis**article uncorrected proof**

Toxic metal pollution is effluents from hospitals and factories. Remove them from the environment is important. Iranian Research Organization for Science and Technology of yeast Saccharomyces carlsbergensis PTCC 5051, and received as a lyophilized culture YEDPA environment and then the proliferation of malt extract broth is used. In this study, the effects of parameters such as pH, temperature, kinetics and adsorption isotherm nickel and zinc were determined by Saccharomyces. Maximum amount of nickel and zinc uptake in the pH range 5/5, and 6 was respectively. Kinetic studies showed that the biological uptake of nickel by biomass on Saccharomyces was quickly removed and most of the first test was done in less than 30 minutes. Adsorption of nickel and zinc were determined by Saccharomyces active and in active. Uptake by yeast is more active. Nickel and zinc uptake by Saccharomyces inactivated by autoclaving or sodium azide and di-nitro phenol has been investigated. Maximum amount of nickel and zinc absorption were 0.65 and 0.47 mmol g. Remove toxic heavy metals from wastewater by the yeast Saccharomyces hospitals is high performance.