%0 Conference Proceedings %T The Effect of Ethane on the Performance of Commercial Polyphenylene Oxide and Cardo-type Polyimide Hollow Fiber Membranes in CO2/CH4 Separation Applications %A Pourafshari Chenar, Mahdi %A H. Savoji %A M. Soltanieh %A T. Matsuurac %A A. Tabe-Mohammadi %J 8th Congress of Chemical Engineering %D 2009