Question

A membrane process is being designed to recover solute A from a dilute solution where c1=2.0*10^(-2)kgmolA/m^3 by dialysis through a membrane to a solution where c2=0.3*10^(-2) kgmolA/m^3. The membrane thickness is 1.59*10^(-5)m, the distribution coefficient K'=0.75, DAB= 3.5*10^(-11)m^2/s in the membrane, the mass transfer coefficient in the dilute solution is kc1=3.5*10^(-5)m/s, and kc2=2.1*10^(-5)m/s. Calculate the individual resistances, total resistance, and total percent resistance of the two films.

Answer 1