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Mass Transfer Processes: Modeling, Computations, and Design, First Edition by P. A. Ramachandran

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Chapter 7. Phenomena of Diffusion

Learning Objectives

After completing this chapter, you will be able to:

  • Explain the kinetic theory interpretation of diffusion in gases as due to random molecular motion and the basic equations needed for prediction of binary diffusivity.

  • Calculate the value of diffusion coefficients in binary gas mixtures and describe the relationship between the diffusion coefficient and the temperature and pressure.

  • Outline the concepts behind Einstein’s model for diffusion of dilute solutes in liquids.

  • Identify the complexities associated with diffusion and concentration effects on diffusion coefficients, especially in liquids.

  • Associate the effects of pore structure and pore diameter with diffusivity of fluids in porous ...

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