Modelling gas purification systems employing molecular sieve silica membranes

Abdel-jawad, M. M., Macrossan, M. N. and Diniz da Costa, JC (2009) Modelling gas purification systems employing molecular sieve silica membranes. SEPARATION AND PURIFICATION TECHNOLOGY, 66 3: 559-564. doi:10.1016/j.seppur.2009.01.014


Author Abdel-jawad, M. M.
Macrossan, M. N.
Diniz da Costa, JC
Title Modelling gas purification systems employing molecular sieve silica membranes
Journal name SEPARATION AND PURIFICATION TECHNOLOGY   Check publisher's open access policy
ISSN 1383-5866
Publication date 2009-05
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.seppur.2009.01.014
Volume 66
Issue 3
Start page 559
End page 564
Total pages 5
Editor Chen, G.
da Haan, A.
Trien, C.
Van der Bruggen, B.
Place of publication The Netherlands
Publisher Elseveir
Collection year 2010
Language eng
Subject C1
090904 Navigation and Position Fixing
900499 Water and Waste Services not elsewhere classified
Abstract In this work, we simulate the transient behaviour of gas purification systems employing silica derived membranes and formulate a model that is capable of predicting this transient behaviour in the presence of a CO2 and H-2, both as single gases and as a binary gas mixture. The model is based on continuity and assumes that the membrane properties do not change between single gas and mixed gas cases. Based on these properties, the complete characterization of transient membrane performance is obtained thereby providing an explanation based upon driving forces for very significant differences between single and mixed gas measurements. The simulated results are validated with independent mixed gas experiments and are then extended to analyse the difference in performance for a gas separation system with mixed gas feed using membranes with at least one order of magnitude difference in selectivity based on single gas permeations. The model also allows simulation for membranes complying with temperature dependency mechanism. Our results show that the increase in performance of the system for mixed gas feed is not commensurate with the increase in the selectivity based on single gas permeations.
Keyword Binary Gas Mixture
Separation Transient State Modelling
Molecular Sieve Silica Membrane
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Chemical Engineering Publications
 
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Created: Thu, 03 Sep 2009, 08:08:10 EST by Mr Andrew Martlew on behalf of School of Chemical Engineering