engleski

Biosorption of Chromium, Copper, Nickel and Zinc Ions onto Fungal Pellets of Aspergillus niger 405 from Aqueous Solutions

Fungal mycelium pellets of Aspergillus niger 405 has been used for adsorption of different metals. The biosorption of copper(II), zinc(II), nickel(II) and chromium(VI) is being studied over a range off metal ion concentrations, adsorption time, pH and co-anions. The process of uptake obeyed both the Langmuir and Freundlich isotherms. The results showed better biosorption for the first three metal ions between pH 4 and 6. On the contrary, pH values over a range of 3 to 7 had no influence on sorption of chromium. Comparison of metal uptake in single and multi-component aqueous solutions of Cu-Zn-Ni-Cr have been also undertaken. Fungus Aspergillus niger 405 showed a good affinity for binding of Cu2+, Zn2+ and Ni2+ in single and multicomponent-equimass solution, while in multi-component solution it occurred only for copper and zinc.

Fungus Aspergillus niger 405; heavy metals; biosorption; single and multi-component metal aqueous solutions

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