Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9636324 | Minerals Engineering | 2005 | 6 Pages |
Abstract
The biosorption of Pb(II) and Cu(II) ions, both individually and in mixtures, by Rhizopus arrhizus was investigated in a batch system as a function of single- and dual-metal ion concentrations. The studied initial pH value for single Pb(II) and Cu(II) biosorptions was 5. It was observed that the co-ion effect on the equilibrium uptake became more noticeable as the co-ion concentration in solution increased. Adsorption isotherms were developed for both the single- and dual-metal ion systems at this pH value and expressed by the mono- and multi-component Langmuir and Freundlich adsorption models. Model parameters were estimated by non-linear regression using MATLAB and EXCEL softwares. It was observed that the mono-component adsorption equilibrium data fitted adequately to both the mono-component adsorption models, for both the components and the pH value studied, while the multi-component Freundlich adsorption model predicted the multi-component adsorption equilibrium data for the ranges of initial mixture concentrations studied, and for the pH value used.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Mozhgan Alimohamadi, Giti Abolhamd, Alireza Keshtkar,