Comparison of PB2+ Removal Characteristics Between Biomaterials and Non-biomaterials

Abstract

The order of Pb2+ removal capacities in chemical adsorbents were found as ion exchange resin > zeolite > granular activated carbon (GAC) > powdered activated carbon (PAC), while in biomass was Aureobasidium pullulans > Saccharomyces cerevisiae > activated sludge. Although Pb2+ removal capacity (mg Pb2+/g) of the activated sludge (30.9) was lower than those of ion exchange resin (167.7) and other pure cultures of A. pullulans (170.4) and S. cerevisiae (95.3), it was higher than those of other chemical adsorbents such as GAC (26.9), PAC (2.1), and zeolite (30.2). The initial Pb2+ removal rates in chemical adsorbents were in the order of PAC > GAC > zeolite > ion exchange resin, while in biomass was A. pullulans > activated sludge > S. cerevisiae. The initial Pb2+ removal rate of activated sludge was higher than those of GAC, zeolite, ion exchange resin and S. cerevisiae cells.