Comparative analysis on equilibrium sorption of metal ions by biosorbent Tempe

This paper reports the biosorption study of Cu2+, Mn4+, and Zn2+ by Rhizopus Oligosporus biomass cultured in Tempe. The maximum adsorption rate occurred at pH 8 and initial concentration of 200 mg/l. The Cu2+ uptake was in equilibrium at 8 mg/g after 15 min of contact time. The Mn4+ uptake was at 9 mg/g after 60 min of contact time. The equilibrium adsorption for Zn2+ was at 12 mg/g after 30 min of contact time. (C) 2003 Elsevier B.V. All rights reserved.