Abstract
Component transport equations are shown in this chapter within a dense membrane matrix, using the solution/diffusion model. The effect of both the solubility and diffusion coefficient, defining the important transport expressions, is briefly discussed. Depending on the interactions between the transported and membrane molecules, both the solubility and diffusion coefficient can strongly be concentration dependent. Exponentially, linearly, or optionally variable diffusivity is discussed defining the inlet mass transfer rates, and concentration distribution curves illustrate their effect on component transport. Different solubility-concentration functions such as Langmuir isotherm and dual-sorption isotherm are also discussed here. Finally, some important solutions for instantaneous diffusive transport are shown.
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