Biomedical Engineering: Bridging Medicine and Technology 1st Edition by Veronique Tran,Mark Saltzman

Exercise 20

For the membrane of thickness shown in the Box 2.5:
a. Draw a graph of the concentration of solute as a function of x at steady state.
b. Estimate the concentration profiles that you expect during the approach to steady state. That is, assume that the membrane is initially saturated with solute at concentration, C2, and then the concentration on the left boundary (at x = 0) is suddenly increased to C1. Sketch the concentration profile immediately after the increase to C1. Sketch the concentration profile a little later, but before steady state is achieved.