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http://dx.doi.org/10.12925/jkocs.2012.29.3.15

Separation Characteristics of $CH_4/CO_2$ Mixed Gas by Polyamide Composite Membrane  

Lee, Jae-Hwa (Department of Environmental Engineering, Kongju National University)
Lee, Geon-Ho (Department of Environmental Engineering, Kongju National University)
Choi, Kyung-Seok (Department of Environmental Engineering, Kongju National University)
Poudel, Jeeban (Department of Environmental Engineering, Kongju National University)
Kim, Soo-Ryong (Green Ceramics Division, KICET)
Oh, Sea-Cheon (Department of Environmental Engineering, Kongju National University)
Publication Information
Journal of the Korean Applied Science and Technology / v.29, no.3, 2012 , pp. 478-485 More about this Journal
Abstract
Polymers are widely used as membrane material for performing the separation of various gaseous mixtures due to their attractive permselective properties and high processability. The separation characteristics of $CH_4$ and $CO_2$ mixed gas using polyamide composite membrane has been studied in this work. The sample gas was prepared by mixing pure methane and carbon dioxide. Permeation tests were carried out at different operation conditions. Feed flow rates were varied between 800~1000 $cm^3/min$, and the stage cuts were varied between 50~60%. The gas inlet pressure and the temperature were varied as 6 bar and $30{\sim}70^{\circ}C$, respectively. The effects of the above mentioned parameters were investigated to estimate the permeability of $CH_4$ and $CO_2$, and the selectivity of $CO_2$ was also calculated for all conditions. The Arrhenius plots were also performed to obtaine the activation energies of $CH_4$ and $CO_2$ permeabilities.
Keywords
$CH_4$; $CO_2$; mixed gas; polyamide composite membrane; separation characteristics;
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