Flux, in pervaporation

Flow Pass (Decreasing Concentration of Feed) Fig. 3.9 Isothermal and real flux in pervaporation. 

FIGURE 4.2 Methanol and water flux in pervaporation expaiments at 55°C by modification of a SPEK membrane with hydrolyzed TEOS. (Adapted from Nunes, S.P., et al., J. Membrane ScL, 203, 215-225, 2002.)... 

The flux in pervaporation can be described by Pick s law. Derive for a component the concentration in the membrane as a function of the distance (i.e. the concentration profile) in a steady-state process for a system with a constant difiusion coefficient and with an exponential diffusion coefficient and draw these concentration profiles. Derive an equarion for the concentration dependent diffusion coefficient as a function of the distance in the membrane and draw this diffusion profile. 

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See also in sourсe #XX -- [ ]

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