PJB-2010-218
BIOSORPTION OF HEAVY METALS USING A DEAD MACRO FUNGUS SCHIZOPHYLLUM COMMUNE FRIES: EVALUATION OF EQUILIBRIUM AND KINETIC MODELS
AMNA JAVAID*, RUKHSANA BAJWA AND ARSHAD JAVAID
Abstract
Biomass of a wood rotting fungus viz., Schizophyllum commune Fries was utilized for the treatment of electroplating wastewater that contained Cu(II), Ni(II), Zn(II) and Cr(VI) ions. Preliminary batch assays were conducted with synthetic pure metal-bearing solutions. Results obtained showed that among various parameters studied, solution pH between a range of 2.0-6.0 induced negligible uptake at pH < 3.5 and exhibited maximum at around 4.5-5.5 for Ni(II), Cu(II) and Zn(II) ions, while for Cr(VI) ion the highest was evidenced at pH 2.0-2.5. The kinetics of all metal ions was fast and biosorption equilibrium was established in 1 hour with appropriateness of pseudo-second-order. A temperature change in the range of 15–45 ◦C did not affect the biosorption capacity of the candidate fungus. The biosorption of metal ion increased on elevating initial metal ions concentrations (20-100 mg L-1) in the medium. The maximum biosorption capacity of fungus biomass was 9.0
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