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Freundlich's Isotherm Extended by Statistical Mechanics

✍ Scribed by Milton Silva da Rocha; Koshun Iha; Antônio Cândido Faleiros; Evaldo José Corat; Maria Encarnación Vázquez Suárez-Iha

Book ID
102578445
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
109 KB
Volume
185
Category
Article
ISSN
0021-9797

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✦ Synopsis

In this paper we obtain an asymptotic development compatible with Freundlich's isotherm, theta = KCm. That expression was derived underlying the theory of heterogeneous surface. We assume the distribution function of adsorption sites to be in the exponential form and the sites to follow the Langmuir energy homogeneous isotherm. The derived expression represents an analytical solution to the fundamental integral equation for the overall adsorption isotherm in its correct integration limit. From this expression we clearly identify the parameters K and m, the Freundlich parameters. We applied this expression to fit the experimental data for the adsorption of CO2 into BPL-activated carbon.

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