Dehydration of Isopropanol and Ethanol by Pervaporation Technique

Authors

  • JR Khan
  • Shah Muhammad
  • Waseem Ahmed

Abstract

Pervaporation is an energy efficient process/technique for the evaporation of a selective component from the liquid mixture using membrane, in direct with the liquid stream. In present study an experimental setup was developed using a Pervatech Silica Based Single Tube Pervaporation Module. Experiments were performed and data was collected for the change in concentration of retentate as well as variation of permeate flux at different temperature, like 40 C and 77 C for two different alcohols ,i.e., isopropanol and 2-ethylhexanol. Vacuum on permeate side and velocity of retentate to membrane module were kept constant during all experiments. It was concluded that pervaporation process can be economically utilized for the production of dehydrated ethanol to be used in gasohol and other alcohols, replacing energy intensive and complicated azeotropic or extractive distillation processes.

References

Jonquieres, A., Clement, R., Lochon, P., Neel, J., Dresch, M., and Chretien, B., “Industrial stateof-the-art of pervaporation and vapour permeation in the western countries”, Journal of Membrane Science 206, pp. 87-117, (2002).

Feng, X., and R.Y.M. Huang, “Liquid Separation by membrane pervaporation: a review”, Industrial and Engineering Chemistry Research 36, pp. 1048-1060, (1997).

Smitha, B., Suhanya, D., Sridhar, S. and Ramakrishna, M., “Separation of organicorganic mixtures by pervaporation- a review”. Journal of membrane science 241, 1-21, (2004).

Matsuura, T., “Synthetic membranes and membrane separation processes CRC Press Boca Raton”, FL, pp. 314-315,( 1994).

Tsuyumoto, M., Teramoto, A., and P. Meares, “Dehydration of ethanol on a pilot-plant Scale, using a new type of hollow fiber membrane”, Journal of Membrane Science 133, pp. 83-94, (1997).

Xu, Z.K. Dai, Q.W., Liu, Z.M., Hou, R.Q., and y.y. Xu, “Microporous propylene hollow fiber membranes, II. Pervaporation separation of water/ethanol mixture by the Poly (acrylic acid) grafted membranes”, Journal of Membrane science 214, pp. 71-81, (2003).

Seok, D.R., Kang, S.G., and S.T., Hwang, “Use of pervaporation for separation of azeotropic mixtures using two different hollow fiber membranes”, Journal of Membrane Science 33, 71-81, (1987).

Liu, R.X., Qiao, X.Y., and T.S., Chung, “The development of high performance 84 copolyimide hollow fibers for pervaporation dehydration of isopropanol”, Chemical Engineering Science 60, pp. 6658-6673, (2005).

Clausi, D.T., and W.J. Koros, “Formation of defect-free polyimide hollow fiber membranes for gas separation”, Journal of Membrane Science 167, pp. 79-89, (2000).

Li, D.F., Chung, T.S., and R. Wang, “Morphological aspects and structure contro of dual-layer asymmetric hollow fiber membranes form by a simultaneous co-extrusion approach”, Journal of Membrane Sc., 243, pp. 155-175, (2004).

Jiang, L.Y.Chung, T.S. and S. Kulprathipanja, “Fabrication of mixed matrix hollow fibers with intimate polymer zeolite interface for gas separation”, A.I.Ch.E. Journal 52, pp. 2898- 2908, (2006).

Jiang, L.Y., Chung, T.S., and R. Rajagopalan, “Dehydration of alcohols by pervaporation through polyimide Matrimid asymmetric hollow fibers with various modifications”, Journal of Chemical Engineering Sc., 63, pp. 204-216, (2008).

Koops, G.H., Nolton, J.,Mulder, M.H.V., and C.A. “Smolders, Integrally skinned polsulfone hollow-fiber membranes for pervaporation”, Journal of Applied Polymer Science 54, pp. 385- 404, (1994).

Das, S., Sakar, S.,Basak, P., and B. Adhikari, “Dehydration of alcohols by pervaporation using hydrophilic polyether urethane membranes”, Journal of Scientific and Industrial Research, vol 67, March, pp. 219-227, (2008).

Wang, Y. Goh, S.H. Chung, T.S., and P. Na, “Polyamide-imide/ polyetherimide dual-layer hollow fiber membranes for pervaporation dehydration of C1-C4 alcholos”, Journal of membrance Science 326, pp. 222-233, (2009).

Xiaoliang, Z., Xin, S., Lingfang, Q., Minzheng, D., Rongfei, H.N.Z., and C. Xiangshu, Synthesis and pervaporation of highly reproducible zeolite membranes from clear solutions”, Chinese Journal of Catalysis 34, pp. 542-547, (2013).

Kittur, A.A., Jeevankumar B.K., and Kariduraganavar, “Pervaporation separation of water-dioxane mixtures through poly (vinyl alcohol)-silicone based hybrid membranes “International Journal of current Engineering and Technology, Special Issue1, Sept, pp. 148- 156, (2013).

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Published

2016-06-22

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Section

Polymer Engineering and Chemical Engineering, Materials Engineering, Physics, Chemistry, Mathematics