Experimental study of gas flux characteristics in a CO2 selective silica based modified membrane.

Nwogu, N.C.; Kajama, M.N.; Gobina, E.

Abstract

The purpose of membrane gas separation for CO2 capture from flue gas process is to reduce greenhouse emissions as well as associated environmental challenges globally. This study looks at gas separation in a single gas permeation experiment using CO2, O2, CH4 and N2 gases by means of a highly selective and permeable inorganic ceramic membrane. A fresh ceramic membrane has been prepared by dip-coating technique through immersion in a silica-based precursor solution for pore size modification and used for gas purification purposes. Results obtained show excellent performance of the silica based membrane for CO2 recovery applications through adsorptive transport mechanism. Effect of pressure drop on gas flux showed a linear proportionality. The gas flux has high CO2 flux of 1.71mols-1m-2 at room temperature in comparison to that of other gases. Further results show that CO2 permselectivity to that of N2 supported the theoretical Knudsen with a high selectivity factor of 3.83 confirming a reasonable capture of CO2 to that of N2 as a major component of a flue gas stream.;\\$aCarbon capture; Composite membrane; Gas permeation; Gas flux; Perm selectivity

Citation

NWOGU, N.C., KAJAMA, M.N. and GOBINA, E. 2014. Experimental study of gas flux characteristics in a CO2 selective silica based modified membrane. International journal of advanced research in engineering and technology (IJARET) [online], 5(8), pages 1-9. Available from: http://www.iaeme.com/MasterAdmin/Journal_uploads/IJARET/VOLUME_5_ISSUE_8/IJARET_05_08_001.pdf

• Journal Article Type: Article
• Acceptance Date: Aug 20, 2014
• Online Publication Date: Aug 20, 2014
• Publication Date: Aug 31, 2014
• Deposit Date: Sep 19, 2016
• Publicly Available Date: Sep 19, 2016
• Journal: International journal of advanced research in engineering and technology
• Print ISSN: 0976-6480
• Electronic ISSN: 0976-6499
• Publisher: International Association of Engineering and Management Education (IAEME)
• Peer Reviewed: Peer Reviewed
• Volume: 5
• Issue: 8
• Pages: 1-9
• Keywords: Carbon capture; Composite membrane; Gas permeation; Gas flux; Perm selectivity
• Public URL: http://hdl.handle.net/10059/1770
• Publisher URL: http://www.iaeme.com/MasterAdmin/UploadFolder/IJARET_05_08_001/IJARET_05_08_001.pdf