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Gas Permeation Properties of Hydrocarbon/$N_2$ Mixture through PEI-PDMS Hollow Fiber Composite Membranes  

Lee, Chung Seop (College of Life Science & Nano Technology, Department of Chemical Engineering & Nano-Bio Technology, Hannam University)
Cho, Eun Hye (College of Life Science & Nano Technology, Department of Chemical Engineering & Nano-Bio Technology, Hannam University)
Ha, Seong Yong (Airrane Co. Ltd.)
Rhim, Ji Won (College of Life Science & Nano Technology, Department of Chemical Engineering & Nano-Bio Technology, Hannam University)
Publication Information
Membrane Journal / v.22, no.4, 2012 , pp. 251-257 More about this Journal
Abstract
For the separation and recovery of n-pentane from nitrogen environment, the poly (dimethyl siloxane) (PDMS) composite membranes supported by polyetherimide (PEI) hollow fiber membranes were prepared. To characterize the gas separation properties of the resulting membranes, the permeance of n-pentane and nitrogen, concentrations of permeate and retentate, and recovery ratio were measured for n-pentane and nitrogen mixtures. The permeance of n-pentane and nitrogen, 2485.3 and 9.9 GPU, were observed respectively. As the stage cut decreases and the feed concentration increases, the n-pentane concentration in permeate tends to increase. In the meanwhile, the recovery efficiency tends to increase as the stage cut increases and the feed concentration decreases.
Keywords
polyetherimide; poly (dimethyl siloxane); n-pentane; stage cut; gas seperation; membrane;
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Times Cited By KSCI : 3  (Citation Analysis)
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