Affiliations: School of Life Sciences, Anhui University, Hefei
230039, China. E-mail:[email protected] | Department of Chemical Engineering, Xiamen University,
Xiamen 361005, China
Note: [] Corresponding author
Abstract: The growth of Phanerochaete chrysosporium (ATCC 24725) in pellets
was influenced by culture time, medium pH, C/N, surfactant concentration, spore
number in inoculum, and shaking rate. The removal of Pb²^+ from aqueous
solution by this kind of mycelial pellets was studied. The results indicated
that many factors affected biosorption. These factors included pH, Pb²^+
concentration, co-ion, adsorption time, and chemical pretreatments of biomass.
Under optimum biosorption conditions (pH 4.5, 27°C, 16h), the highest lead
uptake of 108 mg/g, was observed with mycelial pellets of 1.5-1.7 mm in
diameter which were treated with 0.1 mol/L NaOH solution before adsorption.
Pretreatment of biomass with NaOH further increased its biosorption
capacity.
Keywords: phanerochaete chrysosporium, mycelial pellets, lead ion, biosorption
