Stochastic model for equilibrium adsorption onto activated carbon

作者: F.P. de Kock , J.S.J. van Deventer

DOI: 10.1016/0923-0467(94)02958-X

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摘要: Abstract Most models used in describing adsorption equilibria onto activated carbon of from organic vapours, or dilute aqueous solutions. However, these fail to give accurate predictions if less ideal substances such as dissociated compounds ionic complexes are present, for example industrial streams. Empirical equations usually the only method that can be describe systems, but unfortunately no conclusions drawn parameters equations. Therefore, an improved understanding is required, so extrapolated new combinations species. To alleviate shortcomings existing models, a model based on statistical thermodynamic principles and particularly Monte Carlo proposed. With use this model, classical non-ideal behaviour lateral interactions, heterogeneous surfaces, selective due steric interactions well irreversible modelled. Many influences have been mentioned by other authors not included equilibrium predictions. All some physical meaning single characteristic system. This was applied successfully two i.e. more classic system containing p-bromophenol p-nitrophenol, gold silver cyanide complexes. Some insight into reactions taking place systems gained diagnostic tool. A sensitivity analysis also conducted demonstrate under various conditions.

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