Keywords: biosorption, fungal adsorption, metal adsorption, copper adsorption, Aspergillus niger, Aspergillus flavus, pre–treated biomass
A comparative study of biosorption of Cu using Aspergillus niger and Aspergillus flavus
In the present work a comparative study has been made to adsorb Cu ion from solution using pre–treated biomass of two fungal strains, Aspergillus niger and Aspergillus flavus. Several parameters such as pH, adsorbate and adsorbent concentration and fraction size of the fungal biomass were studied to observe their effect on the percentage of metal uptake by the treated biomass. Although both the fungal strains proved to be potential biosorbents, but novel observation was, under similar experimental conditions Aspergillus flavus showed better biosorption properties than Aspergillus niger. Overall experimental data fitted well to both Freundlich and Langmuir adsorption isotherm models.