Inderscience Publishers

Biosorption of lead(II) by free and immobilised fungal biomass of Phanerochaete chrysosporium: a comparative study

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An efficient metal biosorbent was developed by immobilising fungal biomass within matrix of loofa sponge (FBILS). At biosorption equilibrium FBILS removed 137 mg Pb(II) g-1, which was 24.3% greater than 110 mg Pb(II) g−1 free fungal biomass. The equilibrium biosorption data fitted well the Langmuir model. The experimental data, when applied to the pseudo-first and second-order kinetic models, followed the second-order with r² 0.996. Metal desorption from the Pb(II)-laden FBILS with 50 mM HCl was 99%, and the regenerated FBILS was repeatedly used in seven biosorption-desorption cycles without significant loss in biosorption capacity. The study indicated high potential of FBILS for effective removal of Pb(II) from industrial wastewater.

Keywords: biosorption, lead (II), immobilised fungal biomass, loofa sponge, Phanerochaete chrysosporium, equilibrium, kinetics, kinetic modelling, metal removal, heavy metals, wastewater treatment, water pollution

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