What is Pervaporation?

Pervaporation is a membrane separation technology based on the physico-chemical interaction between the membrane and the permeating molecules. Highly hydrophilic materials, like polyvinyl alcohol, enhance selective sorption an diffusion of water trough a thin dense membrane layer. Therefore, pervaporation is ideally suited für the dehydration of solvent mixtures, especially azeotropes where conventional techologies, like destillation, require complex and energy-intensive processes.

How is  Pervaporation operated?

Pervaporation allows the design and operation of more sustainable and environmental-friendly separation processes. Continuous and batch pervaporation as well as vapour permeation are state-of-the-art technologies for the dehydration of solvents in the pharmaceutical and biotechnology sectors, fine and speciality chemicals industry, nutraceuticals and biofuel production, as well as solvent recycling and industrial wastewater treatment.


PERVAP™ Membranes

DeltaMem’s PERVAP™ hydrophilic membrane is the most used and reliable membrane for the dehydration of solvents like:

Methanol separation from organic solvents is accomplished by PERVAP™ membranes with tailored separation proprieties:

  • Ethanol

  • Isopropanol

  • n-Propanol

  • Amyl alcohols

  • Sec-butanol

  • Acetone

  • Cyclopentanone

  • Methyl Ethyl Ketone 

  • Ethyl acetate

  • Methyl acetate

  • Tetrahydrofuran

  • Acrylonitrile

  • Dimethoxyethane

  • Methoxyacetone

  • Methoxyethanol

  • MTBE

  • THF

  • Toluene

  • Trimethyl borate

  • Methyl acetate

  • Ethyl acetate