Conclusions
A precise analytical solution of the problem of the diffusion of a substance in a sorbing medium for linear and rectangular sorption isotherms was obtained. A large value of parameter g =
≫ 1 is a condition of the applicability of the equilibrium sorption model in a wide time range. With small times\(\left( {\frac{{\pi ^2 Dt}}{{l^2 }}< \frac{\Gamma }{{\sqrt g }}} \right)\) the equilibrium model is not applicable, and the diffusion process can be described by the model with irreversible sorption with sufficient precision.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2446–2450, November, 1988.
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Prokudin, A.B., Groznov, I.N. Limits of applicability of the model of equilibrium sorption in the description of diffusion processes in sorbing media. Russ Chem Bull 37, 2202–2206 (1988). https://doi.org/10.1007/BF00959860
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DOI: https://doi.org/10.1007/BF00959860