Transport Processes and Separation Process Principles, 5th Edition

Chapter 19. Steady-State Mass Transfer

19.0 Chapter Objectives

On completion of this chapter, a student should be able to:

• Calculate diffusion fluxes for the two classic cases: (a) equilmolar counterdiffusion and (b) a diffusing through stagnant, nondiffusing B

• Calculate diffusion fluxes through a varying cross-sectional area

• Calculate diffusion fluxes for a multicomponent system of gases

• Calculate diffusion fluxes for diffusion in solids by using the additional concepts of solubility, permeability, tortuosity, and void fraction

• Calculate the Knudsen number for a gas and determine the appropriate diffusion coefficient

• Calculate the diffusion fluxes in situations where both diffusion and chemical reaction occur

• Use the numerical methods to ...