Microporous and Mesoporous Materials 136 (2010) 1–9
Simplified local density model for adsorption of pure gases on activated
carbon using Sutherland and Kihara potentials
Meysam Hasanzadeh, Farzad Alavi, Farzaneh Feyzi * , Mohammad Reza Dehghani
Thermodynamics Research Laboratory, School of Chemical Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran
a b s t r a c t
In this study, the ability of the simplified local density (SLD) model to represent adsorption of pure gases
on activated carbon as predicted by Sutherland and Kihara potential functions is investigated. Peng–Robinson
(PR) equation of state (EoS) is used in the SLD model to provide the fluid properties. In addition to
the Lennard–Jones potential, which is usually used in literature, Sutherland and Kihara potentials are also
used to represent interactions between gas and solid molecules. The parameters of the models were
adjusted to the data from the literature. The results for the adsorption of methane, ethane, carbon dioxide
and nitrogen on two types of activated carbon are compared. Accurate predictions are observed by the
three potential function models.
_ 2010 Elsevier Inc. All rights reserved.
Keywords: Simplified local density model; Adsorption; Activated carbon; Sutherland potential; Kihara potential
