Dd. Do et X. Hu, AN ENERGY-DISTRIBUTED MODEL FOR ADSORPTION-KINETICS IN LARGE HETEROGENEOUS MICROPOROUS PARTICLES, Chemical Engineering Science, 48(11), 1993, pp. 2119-2127
In this paper, we present a new model for describing adsorption and de
sorption of gaseous adsorbate into large microporous particles. The pr
incipal feature of this model is that it allows for the energy distrib
ution of adsorption site in both equilibrium isotherm and surface diff
usion of the adsorbed species. The model is valid for large microporou
s particles, where all controlling mass transfer resistances are along
the particle coordinate. Parametric study is carried out to show the
effect of the energy distribution on the dynamics of adsorption and de
sorption. The effects of other parameters such as external bulk adsorb
ate concentration and maximum adsorption capacity are also studied. Fi
nally, experimental data of adsorption of hydrocarbons (ethane and n-b
utane) and sulphur dioxide in an Ajax activated carbon are applied to
demonstrate the potential of this theory.