alexa Kinetics Modeling of The Column Adsorption for The Dehy
ISSN: 2157-7048

Journal of Chemical Engineering & Process Technology
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Research Article

Kinetics Modeling of The Column Adsorption for The Dehydration of Ethanol-Water Mixtures using Biomass Adsorbents

Okewale AO1*, Igbokwe PK2 and Babayemi KA3
1Department of Chemical Engineering, Federal University of Petroleum Resources, P.M.B., 1221, Effurun, Nigeria
2Department of Chemical Engineering, Nnamdi Azikiwe University, P.M.B., 5025, Awka, Anambra State, Nigeria
3Department of Chemical Engineering, Anambra State University, P.M.B., 02, Uli, Anambra State, Nigeria
Corresponding Author : Okewale AO
Department of Chemical Engineering
Federal University of Petroleum Resources
P.M.B., 1221, Effurun, Nigeria
E-mail: [email protected]
Received January 08, 2015; Accepted March 02, 2015; Published March 10, 2015
Citation: Okewale AO, Igbokwe PK, Babayemi KA (2015) Kinetics Modeling of The Column Adsorption for The Dehydration of Ethanol - Water Mixtures using Biomass Adsorbents. J Chem Eng Process Technol 6:217. doi:10.4172/2157-7048.1000217
Copyright: © 2015 Okewale AO, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

This study has explored the use of biomass - based adsorbents other than the conventional materials as adsorbent for the dehydration of ethanol - water mixtures. The column study was carried out using enzyme modified corn starch and un- modified corn starch for the adsorptive dehydration of ethanol - water mixtures. The effect of bed heights and flow rates on the breakthrough curves revealed that adsorption efficiency decreased with increased flow rate and increased with bed height. The throughput volume of the anhydrous ethanol - water mixtures increased with increase bed height, due to availability of more sorption sites on the adsorbents. Thomas, Yoon and Nelson, and Adams - Bohart kinetic models were used to describe the packed column study. The column kinetics was best described by Yoon and Nelson and Adams - Bohart models. The presence of the hydroxyl O - H stretch group’s spectroscopy confirmed the chemical affinity of these adsorbents for water in the ethanol - water mixture. The amorphous or crystallinity nature of the adsorbents was investigated using the X - RD analysis.

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