What is pervaporation

The word ‘pervaporation’ is a combination of ‘permeation’ and ‘evaporation’. The partial pressure difference of a component at the feed side and a vacuum at the permeate side results in a driving force for permeation of the desired component through the membrane. A high partial pressure difference as well as a high permeability will result in a high product recovery.
In pervaporation, the affinity of the desired, to be recovered component with the membrane determines its separation performance. If you want to selectively remove water from a mixture, Pervatech supplies membranes that are hydrophilic (‘affinity with water’). Conversely, if you want to extract organic compounds from water, organophilic membranes (‘affinity with organic compounds’) are suitable.

White paper pervaporation vapor permeation processes