The simultaneous biosorption of Cu(II) and Zn on Rhizopus arrhizus: application of the adsorption models

The biosorption of two divalent metal ions—copper(II) and zinc—in single component and binary systems has been studied using Rhizopus arrhizus. The monocomponent equilibrium data have been analysed using the Langmuir, the Freundlich and the three parameter Redlich–Peterson isotherms. The non-competi...

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Bibliographic Details
Published in:Hydrometallurgy 1998, Vol.50 (3), p.297-314
Main Authors: Sağ, Y, Kaya, A, Kutsal, T
Format: Article
Language:English
Subjects:
Applied sciences
Biosorption
Exact sciences and technology
Freundlich model
Hydrometallurgy
Langmuir
Metals. Metallurgy
Production of metals
Production of non ferrous metals. Process materials
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Summary:The biosorption of two divalent metal ions—copper(II) and zinc—in single component and binary systems has been studied using Rhizopus arrhizus. The monocomponent equilibrium data have been analysed using the Langmuir, the Freundlich and the three parameter Redlich–Peterson isotherms. The non-competitive Freundlich isotherms have been found to have the highest regression correlation coefficients and the minimum average percentage errors between the predicted and the experimental values. The effects of the presence of Cu(II) and Zn ions together on the biosorption of Cu(II) and Zn ions have been investigated in terms of initial rates of biosorption and equilibrium isotherms. The competitive Freundlich model has also been demonstrated to provide the best correlation for the biosorption of the two metal ions on R. arrhizus.
ISSN:0304-386X
1879-1158
DOI:10.1016/S0304-386X(98)00065-6