FUNDAMENTALS OF SORPTION KINETICS OF GAS-MIXTURES IN POROUS-MEDIA UNDER HIGH-PRESSURE CONDITIONS

Based on the Volterra integral technique, a universal method to calcul ate the sorption uptake curves of multi-component gas mixtures in poro us solids under variable high pressure conditions with non-ideal behav ior of the gas phase has been proposed. It takes into account a non-li nearly behaving concentration dependence at the surface of the porous medium. The applicability of the introduced method presupposes an isot hermic gas phase and a constant diffusivity matrix. For the descriptio n of the non-ideal gas phase behavior, equations of state were utilize d.