Gas transport efficiency of ceramic membranes: comparison of different geometries


Zivkovic, Tijana and Benes, Nieck E. and Bouwmeester, Henny J.M. (2004) Gas transport efficiency of ceramic membranes: comparison of different geometries. Journal of Membrane Science, 236 (1-2). pp. 101-108. ISSN 0376-7388

[img] PDF
Restricted to UT campus only
: Request a copy
Abstract:The effect of support geometry on the performance of asymmetric ceramic membranes for gas separation is analyzed. Flat plate (FP), tubular (TU) and multichannel (MC) geometries are investigated using the dusty gas model (DGM) to describe transport of a multicomponent gas mixture through the macroporous support. It is shown that: (a) the support geometry significantly affects membrane performance; (b) in the case of the multichannel geometry, the inner channels do not contribute efficiently to the overall gas transport; (c) best performance in terms of both flux and permselectivity is obtained for tubular geometry. It is furthermore clarified that for an accurate description of the transport behaviour it is crucial to properly account for the relative contributions of all different transport mechanisms (Knudsen diffusion, bulk diffusion and viscous flow) included in the DGM.
Item Type:Article
Science and Technology (TNW)
Research Group:
Link to this item:
Official URL:
Export this item as:BibTeX
HTML Citation
Reference Manager


Repository Staff Only: item control page

Metis ID: 218576