1. Membrane Materials, Characterization, and Transport Properties2. Membrane Materials, Structures, and Modules3. Mass Transport Through a Membrane Layer4. Molecular Diffusion5. Diffusion Through a Plane Membrane Layer6. Diffusion Accompanied by Chemical Reaction Through a Plane Sheet7. Diffusive Plus Convective Mass Transport Through a Plane Membrane Layer8. Diffusive Plus Convective Mass Transport With Chemical Reaction Through a Plane Membrane Layer9. Diffusion in a Cylindrical Membrane Layer10. Mass Transport in the Presence of a Fouling Layer11. Membrane Contactors12. Transport of Fluid Phase in a Capillary Membrane13. Membrane Reactor14. Membrane Bioreactor15. Nanofiltration16. Pervaporation17. Forward Osmosis18. Membrane Gas Separation19. Membrane Distillation20. Reverse Osmosis21. Pressure-Retarded Osmosis (PRO) Process22. In Conclusion