Abstract
The adsorption of three metal ions onto bone char has been studied in both equilibrium and kinetic systems. An empirical Langmuir-type equation has been proposed to correlate the experimental equilibrium data for multicomponent systems. The sorption equilibrium of three metal ions, namely, cadmium (II) ion, zinc (II) ion and copper (II) ion in the three binary and one ternary systems is well correlated by the Langmuir-type equation. For the batch kinetic studies, a multicomponent film-pore diffusion model was developed by incorporating this empirical Langmuir-type equation into a single component film-pore diffusion model and was used to correlate the multicomponent batch kinetic data. The multicomponent film-pore diffusion model shows some deviation from the experimental data for the sorption of cadmium ions in Cd-Cu, Cd-Zn and Cd-Cu-Zn systems. However, overall this model gives a good correlation of the experimental data for three binary and one ternary systems.
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Cheung, Cw., Choy, K.K.H., Porter, J.F. et al. Empirical Multicomponent Equilibrium and Film-Pore Model for the Sorption of Copper, Cadmium and Zinc onto Bone Char. Adsorption 11, 15–29 (2005). https://doi.org/10.1007/s10450-005-1089-5
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DOI: https://doi.org/10.1007/s10450-005-1089-5