Question

2. At any location in a dialysis membrane of thickness 2.5 x105 m, the value of Kim is 0.85 for a solute i. The value of the feed (blood) side mass transfer coefficient for the solute at that location, kir, is 4.6x 105 m/s; the corresponding value on the dialysate side is kip 2.6x10 m/s. The effective diffusion coefficient of the solute in the membrane is 4x1011 m2/s (this incorporates the membrane porosity and tortuosity factors). The feed liquid concentration of the solute is 3.5x10-2 kgmol/m3; the corresponding concentration on the dialysate side is 1.1x102 kgmol/m3

Calculate the value of the overall mass transfer coefficient of the solute at this location.

Calculate the molar flux of the solute as well.

Answer 1