Application of Adsorbents for Water Pollution Control

Equilibrium and Kinetic Modeling of Adsorption at Solid/Solution Interfaces

Author(s): Wojciech Plazinski and Anita Plazinska

Pp: 32-80 (49)

DOI: 10.2174/978160805269111201010032

* (Excluding Mailing and Handling)


This chapter aims at presenting the most common models describing the adsorption at solid/solution interfaces. Considerations are limited to the batch-type adsorption systems. The presented models are divided into two groups: models related to the equilibrium state and those describing the time-evolution of the adsorption system ('kinetic models'). A special emphasis is put on the relation between the physical models and the empirical and/or semi-empirical mathematical expressions. The issue of interpretation of the experimental data is also briefly discussed in the context of various models.

Keywords: Equilibrium modeling, Kinetics, Kinetic modeling, Adsorption, Interface, Langmuir model, Freundlich model, Langmuir-freundlich isotherm, Dubinin-radushkevich isotherm, Thermodynamic parameters, Multicomponent Adsorption, Multi-site-occupancy Adsorption, Intraparticle-pore-diffusion model, Intraparticle-surface-diffusion model.

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