Equilibrium and Thermodynamic Studies on the Biosorption of Lead (II) by Living and Nonliving Biomass of Penicillium notatum

This study aims to investigate the biosorption of Pb (II) by living and nonliving biomass Penicillium notatum. notatum PTCC 5074 was purchased from Iran Scientific-Industrial Research Organization in lyophilized form after culturing potato dextrose agar propagated Sabouraud broth medium. The highest adsorption (180.74 187.08 mg/g per dry weight biomass, respectively) at concentration 228 mg/L ionic strength 43 terms Ca2+ 1.2 g/L concentration. optimum contact time temperature were 37 hours 32.5°C, respectively. Kinetic studies showed that Pb(II) both cases follows a pseudo-second-order reaction. process consistent with Langmuir model state, whereas favourite models for state Freundlich. Thermodynamic constants indicated exothermic endothermic, obtained results states is suitable development an efficient economic biosorbent removal aqueous environments.