Contact
    Start Publications Performance of PDMS membranes in pervaporation: Effect of ...
    ←  Publication Finder
    Attension

    Performance of PDMS membranes in pervaporation: Effect of silicalite ?llers and comparison with SBS membranes

    Year: 2010

    Journal: Journal of Colloid and Interface Science, Volume 346, Issue 1, 1 June 2010, Pages 254-264, 20111221

    Authors: A. Dobrak a,b , A. Figoli c, S. Chovau a , F. Galiano c , S. Simone c , I.F.J. Vankelecom b , E. Drioli c , B. Van der Bruggen a

    Organizations: a Department of Chemical Engineering, Laboratory of Applied Physical Chemistry and Environmental Technology, Katholieke Universiteit Leuven, W. de Croylaan 46, B-3001 Leuven, Belgium, b Department of Microbial and Molecular Systems, Centre for Surface Chemistry and Catalysis, Katholieke Universiteit Leuven, Kasteelpark Arenberg 23, B-3001 Leuven, Belgium, c Research Institute on Membrane Technology (ITM-CNR), c/o University of Calabria, via P. Bucci, Cubo 17/C, 87030 Rende, Cosenza, Italy

    Laboratory-made silicalite filled PDMS membranes were tested by means of concentration and temperature influence on the membrane performance in removal of ethanol from ethanol/water mixtures. This allowed studying the applicability of solution-diffusion model in the transport mechanism description. Experiments were performed by varying the ethanol concentration in the feed and temperature. Two types of fillers were incorporated into the PDMS network: commercial zeolite silicalite (CBV 3002) and laboratory-made colloidal silicalite-1. Obtained results were then compared with data gathered for unfilled PDMS membranes to examine the effect of fillers incorporation. Moreover, the comparison with novel block co-polymer based porous and dense SBS membranes was done. It was found that the solution-diffusion model was a good representation of ethanol transport through both filled and unfilled PDMS membranes, whereas the water flux did not obey this model due to the swelling effects. Incorporation of the fillers increased membrane stability and improved the selectivity. Performance of the SBS membranes characterized by a dense structure was found to be similar to the performance of filled PDMS membranes.