화학공학소재연구정보센터
Journal of Industrial and Engineering Chemistry, Vol.19, No.3, 987-992, May, 2013
Equilibrium, kinetic and isotherm of some metal ion biosorption
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Trichoderma reesei was used as a biosorbent for the removal of Co2+, Cu2+, Ni2+, Pb2+ and Zn2+ ions. The influence of factors such as pH, mass of biomass, contact time and temperature on biosorption efficiency was optimized. To calculate the isotherm parameters for the biosorption of Co2+, Cu2+, Ni2+, Pb2+ and Zn2+ ions at optimized conditions, the experimental equilibrium data were fitted to Langmuir and Freundlich models. The calculated thermodynamic parameters, △G°, △H° and △S° showed that the biosorption of Co2+, Cu2+, Ni2+, Pb2+ and Zn2+ ions onto T. reesei biomass was feasible, spontaneous and endothermic at the optimized conditions. The results of kinetic analysis showed that the biosorption of the selected metal ions onto T. reesei biomass obeys pseudo second order kinetics.
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