A New Resistance Model for Interpretation of Gas Permeation Data of Composite and Asymmetric Membranes

Document Type : Original Paper

Authors

1 Senior Chemical Engineer, Gas Company of East Azarbijan, Tabriz, Iran

2 Department of Chemical Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran

3 Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran

Abstract

In this work a new resistance model has been presented based on that of Henis-Tripodi which can be used for interpretation of gas permeation data in composite and asymmetric membranes. In contrast to the previous works, in this model the fraction of the support layer surface that includes the pores filled with coating material has been taken into account. The influences of the filled pores on separation factor and the gas permeation through composite and asymmetric membranes as well as the influence of the effective thickness of substrate on the filled pores have also been analyzed. Then the corresponding unknown parameters for gas separation of the composite and asymmetric membranes have been characterized by nonlinear regression and the results were compared with those of the experimental data from the literature. The pressure dependence of the gas permeability coefficient in glassy polymer has also been considered. The model shows improvement with respect to its capability in the interpretation of the permeation data of gas mixtures by composite and asymmetric membranes.     

Keywords

References

[1] Shieh, J. J., Chung, T. S. and Paul, D. R. (1999). "Study on multi-layer composite hollow fiber membranes for gas separation." Chem. Eng. Sci., Vol. 54, pp. 675-684.
[2] Feng, X., Shao, P., Hung, R., Jiang, G. and Xu, R. (2002). "A study of silicone rubber/polysulfone composite membrane: correlating H2/N2 and O2/N2 permselectivities." Sep. Purif. Technol., Vol. 27, pp. 211-223.
[3] Pourafshari Chenar, M., Soltanieh, M., Matsuura, T., Tabe Mohammadi, A. and Khulbe, K.C. (2006). "The effect of water vapor on the performance of commercial polyphenylene oxide and Cardo-type polyimide hollow fiber membranes in CO2/CH4 separation applications." J. Membrane Sci., Vol. 285, pp. 265–271.
[4] Pourafshari Chenar, M., Soltanieh, M., Matsuura, T., Tabe-Mohammadi, Sadeghi, M. (2008). "Application of Cardo-type polyimide (PI) and polyphenylene oxide (PPO) hollow fiber membranes in two-stage membrane systems for CO2/CH4 separation." J. Membrane Sci., Vol. 324, pp. 85–94.
[5] Peng, P., Liu, J. and Li, J. (2003)."Analysis of the gas transport performance through PDMS/PS composite membranes using the resistances-in-series model." J. membrane sci., Vol. 222, pp. 225-234.
[6] Henis, J. M. S. and Tripodi, M. K. (1981). "Composite hollow fiber membranes for gas separation: the resistance model approach." J. Membrane Sci., Vol. 8, pp. 233-246.
[7] He, G., Huang, X., Xu, R. and Zhu, B. (1996). "An improved resistance model for gas permeation in composite membranes." J. Membrane Sci., Vol. 118, pp. 1-7.
[8] Kimmerle, K., Hofman, T. and Strathmann, H. (1991). "Analysis of gas permeation through composite membranes." J. membrane sci., Vol. 61, pp. 1-17.
[9] Ashworth, A.J. (1992). "Relation between gas permselectivity and permeability in a bilayer composite membrane." J. Membrane Sci., Vol. 71, pp. 169-173.
[10] Fouda, A., Chen, Y., Bai, J. and Matsuura, T. (1991). "Wheatstone bridge model for the laminated polydimethylsiloxane/ polyethersulfone membrane for gas separation." J.
Membrane Sci., Vol. 64, pp. 263-271.
[11] Wang, D., Li, K. and Teo, W.K. (1995). "Effects of temperature and pressure on gas permselection properties in asymmetric membranes." J. Membrane Sci., Vol. 105, pp. 89-101.
[12] Wang, D., Xu, R., Jiang, G. and Zhu, B. (1990). "Determination of surface dense layer structure parameters of the asymmetric membrane by gas permeation method." J. Membrane Sci., Vol. 52, pp. 97-108.
[13] Erb, A.J. and Paul, D.R. (1981). "Gas sorption and transport in polysulfone." J. Membrane Sci., 8,11.
[14] Reid, R.C., Prausnitz, J.M. and Sherwood, T.K. (1977). "The properties of gases and liquids" McGraw-Hill.
[15] Rangarajan, R., Mazid, M. A., Matsuura and Sourirajan, T. S. (1984). "Permeation of pure gases under pressure through asymmetric porous membranes. Membrane characterization and prediction of performance." Ind. Eng. Chem. Process Des. Dev., Vol. 23, pp. 79-87.
[16] Seader and Henley, (1998). "Separation process principles", John Wiley and Sons.
[17] Kesting, R.E. and Fritzche, A.K. (1993). "Polymeric gas separation membranes", Wiley Interscience.
[18] Zydney, A.L., Aimar, P., Meireles. M., et al. (1994). "Use of the log-normal probability density function to analyze membrane pore size distributions: functional forms and discrepancies." J. Membrane Sci., Vol. 91, pp. 293-298.
[19] Momeni, M. (1997). "Transport of multi-component gas mixture through membranes." M.S. Thesis, Department of Chemical Engineering, Sharif University of Technology, Tehran, Iran.
[20] Hojjati, S.A. (2002). "Modeling of Multi-component gas mixture transport through membranes." M.S. Thesis, Department of Chemical Engineering, Sharif University of Technology, Tehran, Iran.
[21] Baker, R.W. (1997). "The Solution-Diffusion model: A review." J. Membrane Sci., Vol. 107, pp. 1-21.
Journal of Chemical and Petroleum Engineering
Volume 46, Issue 2 - Serial Number 2
December 2012
Pages 73-86

Files

History

  • Receive Date: 06 September 2012
  • Accept Date: 20 November 2012

Share

How to cite

Statistics