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Predictive Thermodynamic Model for Gas Permeability of Gas Separation Membrane  

Kim, Jong Hwan (Department of Chemical Engineering, Dongguk University)
Hong, Sung Kyu (Department of Chemical Engineering, Dongguk University)
Park, Sang Jin (Department of Chemical Engineering, Dongguk University)
Publication Information
Korean Chemical Engineering Research / v.45, no.6, 2007 , pp. 619-626 More about this Journal
Abstract
It is of special interest in our membrane separation technology due to its low energy consumption and cost, relatively simple equipment, low investment and operation cost, et al. Full scale utilization of such processes can be widely utilized to the various fields. Using the difference of permeability of gas molecules between the filter layers, it is able to separate effectually pure gases from the mixed gases. In this paper, the membranes of PDMS, ${\gamma}-radiated$ PDMS, PTFE, PTFE-X are chosen to develop the predictive model for the separation of pure gases such as oxygen, nitrogen, hydrogen, and other gases from mixed gases. By utilizing the thermodynamic gas properties($\sigma$, $\varepsilon/k$) and experimental data of gas transport characteristics for different polymer membranes, it is able to develop the predictive model equation under the influence of temperature, pressure and polymer characteristics. Predictive model developed in this research showed good agreement with experimental data of gas permeability characteristics for develop four different polymer membranes. The proposed model can also be extended to the general equation for predicting the separation of gases based on the properties of polymeric membranes.
Keywords
Gas Transport; Permeability; Transport Property; Molecular Property;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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