Pervaporation is a process in which a specific component in a liquid feed mixture passes through a dense, non-porous membrane by solution – diffusion transport mechanism. Permeate is collected as vapour on one side while the other side of the membrane is kept under vacuum conditions. Some of the Applications include Dehydration of Organic Solvents. The PV process can easily dehydrate solvent mixtures. The binary or ternary azeotropes can be dehydrated without the use of entrainers. In some cases, where distillation is not possible, pervaporation is the only alternative to costly incineration of waste solvent streams.

Advantages :

• Superior for azeotropic mixtures
• Pollution free process
• Energy efficient
• Flexibility
• Modular construction