Breakthrough in pervaporation membrane for dehydration of solvent streams

After several years of development, researchers at the Universities of Twente and Amsterdam and the Energy research Centre of the Netherlands have succeeded in obtaining a membrane system which is hydrothermally stable under semi-industrial dehydrating conditions at elevated temperature. This organic-inorganic hybrid membrane system combines the best of both worlds: flexibility and water repelling properties of organics, and thermal and solvent stability of ceramic membranes.
Continuous testing over periods of up to almost two years revealed reliable and stable operation of this membrane system for the dehydration of a 95 wt% n-butanol – 5 wt% water mixture via pervaporation at 150°C.

Published in:
NPT Procestechnologie, nr. 3, page 18-19, June 2008, English language

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