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Experimental and Modeling Study on Pervaporation Separation of Ethanol and Water Mixture by Polycrystalline MFI Zeolite Membranes


Abstract While the solution diffusion model and pore flow model dominate pervaporation transport mechanism modeling, a new model combining the solution diffusion and viscous flow models is validated using membranes with large scale defects exceeding 2 nm in diameter. A range of membranes was characterized using scanning electron microscopy and x-ray diffraction (XRD) to determine quality and phase characteristics. MFI zeolite membranes of He/SF6 pure gas permeation ideal selectivities of 25, 15, and 3 for good, medium, and poor quality membranes were subjected to liquid pervaporations with a 5% ethanol in water feed, by weight. Feed pressure was increased from 1 to 5 atm, to validate existence of viscous flow in the defects. Component molar flux ... (more)
Created Date 2016
Contributor Williams, Suzanne J. (Author) / Lin, Jerry Y.S. (Advisor) / Emady, Heather (Committee member) / Mu, Bin (Committee member) / Arizona State University (Publisher)
Subject Chemical engineering
Type Masters Thesis
Extent 62 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Masters Thesis Chemical Engineering 2016
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis