Mazin Abdulhusein Beden, Muhammad Abbas Ahmad Zaini, Tuan Amran Tuan Abdullah


This work was aimed at evaluating the ethanol separation using Sepabeads207 adsorbent. A 10 wt% of ethanol solution was used as a model fermentation broth. The separation of ethanol from the solution was performed in a tube containing Sepabeads207 at different operating conditions: temperatures, 20 to 40oC; solution pH, 4 to 7; and contact times, 5 to 25 minutes. Recovery of ethanol via stripping was studied between 15 and 35 minutes, and at different air temperatures of 80 to 95oC. The concentration of liquid ethanol was measured using gas chromatography and refractometer. A higher ethanol concentration by Sepabeads207 adsorption was obtained at 20oC and solution pH 4 for 5 minutes, while the recovery was performed better at 80oC for 15 minutes. By applying these conditions, 10 wt% of ethanol in the solution was concentrated to 46 wt%. The ethanol adsorption data are: i). capacity of 0.22 g ethanol/g adsorbent, ii). selectivity of 7.75 (g ethanol/g water (adsorbed)) / (g ethanol/g water (original solution)), and iii). efficiency of 100%. Sepabeads207 is a promising adsorbent for ethanol separation from the dilute ethanol solution.


Adsorption, ethanol, fermentation broth, Sepabeads207, stripping

Full Text:



Ziolkowska, J. R. 2014. Prospective Technologies, Feedstocks and Market Innovations for Ethanol and Biodiesel Production in the US. Biotechnology Reports. 4: 94-98.

Ahmed, H., Rask, N. and Baldwin, E. D. 1989. Ethanol Fuel as an Octane Enhancer in the US Fuel Market. Biomass. 19(3): 215-232.

Huang, H-J., Ramaswamy, S., Tschirner, U. W. and Ramarao, B. V. 2008. A Review of Separation Technologies in Current and Future Biorefineries. Separation and Purification Technology. 62(1): 1-21.

Banduru, V. V. R., Somalanka, S. R., Mendu, D. R., Madicherla, N. R. and Chityala, A. 2006. Optimization of Fermentation Conditions for the Production of Ethanol from Sago Starch by Co-immobilized Amyloglucosidase and Cells of Zymomonas mobilis using Response Surface Methodology. Enzyme and Microbial Technology. 38(1-2): 209-214.

Wiselogel, A., Tyson, S. and Johnson, D. 1996. Biomass Feedstock Resources and Composition. In Wyman, C. E. (Ed.). Handbook on Bioethanol: Production and Utilization. London: CRC Press.

Ibrahim, N. A. and Zaini, M. A. A. 2016. Parametric Investigation of Fixed-Tray, Semi-continuous Distillation Column for Ethanol Separation From Water. Jurnal Teknologi (Science & Engineering). In press.

Lee, L-S. and Huang, M-Y. 2000. The Vapour-liquid Equilibrium of Ethanol-water Mixture in the Presence of Benzyltriethylammonium Chloride Salt at Atmospheric Pressure. Chemical Engineering Communication. 180(1): 19-38.

Gil, I. D., Uyazan, A. M., Aguilar, J. L., Rodriguez, G. and Caicedo, L. A. 2008. Separation of Ethanol and Water by Extractive Distillation with Salt and Solvent as Entrainer: Process Simulation. Brazilian Journal of Chemical Engineering. 25(1): 207-215.

Verhoef, A., Figoli, A., Leen, B., Bettens, B., Drioli, E. and der Bruggen, B. V. 2008. Performance of a Nanofiltration Membrane for Removal of Ethanol from Aqueous Solutions by Pervaporation. Separation and Purification Technology. 60(1): 54-63.

O’Brien, D. J. and Craig Jr., J. C. 1996. Ethanol Production in a Continuous Fermentation/Membrane Pervaporation System. Applied Microbiology and Biotechnology. 44(6): 699-704.

Delgado, J. A., Uguina, M. A., Sotelo, J. L., Agueda, V. I, Gracia, A. and Roldan, A. 2012. Separation of Ethanol-water Liquid Mixtures by Adsorption on Silicalite. Chemical Engineering Journal. 180: 137-144.

Malik, R. K, Ghosh, P. and Ghose, T. K. 1983. Ethanol Separation by Adsorption-desorption. Biotechnology and Bioengineering. 25(9): 2277-2282.

Ramachandran, C. E., Chempath, S., Broadbelt, L. J. and Snurr, R. Q. 2006. Water Adsorption in Hydrophobic Nanopores: Monte Carlo Simulations of Water iIn Silicalite. Microporous and Mesoporous Materials. 90(1-3): 293-298.

Wang, K. S., Liao, C. C., Chu, R. Q. and Chung, T. W. 2010. Equilibrium Isotherms of Water and Ethanol Vapors on Starch Sorbents and Zeolite 3A. Journal of Chemical and Engineering Data. 55(9): 3334-3337.

Ophardt, P. 2003. Chemistry of Hydrogen Bond. Journal of Applied Chemistry. 73: 18-24.



  • There are currently no refbacks.

Copyright © 2012 Penerbit UTM Press, Universiti Teknologi Malaysia.
Disclaimer : This website has been updated to the best of our knowledge to be accurate. However, Universiti Teknologi Malaysia shall not be liable for any loss or damage caused by the usage of any information obtained from this web site.
Best viewed: Mozilla Firefox 4.0 & Google Chrome at 1024 × 768 resolution.