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

作     者：Dobrak, A. Figoli, A. Chovau, S. Galiano, F. Simone, S. Vankelecom, I. F. J. Drioli, E. Van der Bruggen, B. 

作者机构：Univ Calabria Res Inst Membrane Technol ITM CNR I-87030 Arcavacata Di Rende Italy Katholieke Univ Leuven Dept Chem Engn Lab Appl Phys Chem & Environm Technol B-3001 Louvain Belgium Katholieke Univ Leuven Dept Microbial & Mol Syst Ctr Surface Chem & Catalysis B-3001 Louvain Belgium 

出 版 物：《JOURNAL OF COLLOID AND INTERFACE SCIENCE》 (胶体与界面科学杂志)

年 卷 期：2010年第346卷第1期

页      面：254-264页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：K.U. Leuven Research Council [OT/06/37] Federal Government Flemish Government The Erasmus Mobility 

主　　题：PDMS membranes Pervaporation Solution-diffusion model Temperature effect Membrane performance 

摘      要：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. (C) 2010 Elsevier Inc. All rights reserved.