Coupling of adsorption and diiusion in porous and granular materials. A 1-D example of the boundary value problem

Bettina Albers
In the paper we present a macroscopic continuum model of adsorption in porous materials consisting of three components. We consider the ow of a uid component through channels of the skeleton. It serves as carrier for an adsorbate whose mass balance equation contains a source term. The source consists of two parts: a Langmuir contribution connected with bare sides on internal surfaces which becomes in equilibrium the Langmuir isotherm, and changes of the internal surface driven by the source of
more » ... orosity. The model for the latter contribution is new. Parameters of this model are analyzed by means of an example of solution of a boundary value problem for the full set of eld equations which describes the transport of pollutants in soils.