MATHEMATICAL MODEL OF MASS TRANSFER IN THE CASE OF A BIDISPERSED POROUS MATERIAL
A. I. Moshinskii UDC 539.217.2:66.084 Consideration is given to a model (suitable for description at large times) for analysis of the heat- and mass-exchange processes of a porous body with two types of pores. Specifically, we are dealing with impregnation (in a sense, with the process of extraction, its converse). The solution of the problem with the most typical supplementary conditions is obtained; the kinetic impregnation (withdrawal) function and the density of the substance flux from the body are found for this problem. Keywords: two-component nature, mass exchange, porous body, impregnation, extraction. St. Petersburg Academy of Chemistry and Pharmaceutics, 14 Prof. Popov Str., St. Petersburg, 193376, Russia. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 82, No. 2, pp. 258-272, March-April, 2009. Original article submitted December 4, 2007; revision submitted July 14, 2008.