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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 917Gas Permeation Models in Mixed Matrix Membranes...

Gas Permeation Models in Mixed Matrix Membranes for Gas Separation

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Abstract:

Various theoretical models on CO₂ permeation were discussed that included Maxwell model, Bruggeman model, Lewis-Nielson model and Pal model. These models were used for comparing the relative permeance of CO₂ with the previously published experimental data on silica nanoparticles filled polysulfone/polyimide (PSF/PI) mixed matrix membranes (MMMs). The results showed that the deviation was in the increasing order: Lewis-Nielsen model< Maxwell model< Pal model< Bruggeman model. All these models assumed that the fillers are spherical in shape. A scanning electron microscope (SEM) cross-sectional image indicated that the silica particles were prolate ellipsoids that were dispersed in the matrix. To investigate the prolate effect, the Maxwell-Wagner-Sillar (MWS) model was employed. The evaluation from cross-sectional image of the membrane structure indicated that the shape factor along z-direction gave a minimum deviation of 17.52%-20.10% at 2-10 bar feed pressure respectively.

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Periodical:

Advanced Materials Research (Volume 917)

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317-324

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https://doi.org/10.4028/www.scientific.net/AMR.917.317

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Online since:

June 2014

Authors:

Sikander Rafiq*, Adulhalim Shah Maulud, Zakaria Man, Nawshad Muhammad

Keywords:

Mixed Matrix Membrane (MMM), Polyimide, Polysulfone, Silica Nanoparticles

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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