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Modelling the kinetics of transesterification reaction of sunflower oil with ethanol in microreactors

Richard, Romain and Thiebaud-Roux, Sophie and Prat, Laurent E. Modelling the kinetics of transesterification reaction of sunflower oil with ethanol in microreactors. (2013) Chemical Engineering Science, vol. 87 . pp. 258-269. ISSN 0009-2509

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Official URL: http://dx.doi.org/10.1016/j.ces.2012.10.014

Abstract

Transesterification reaction of vegetable oil with ethanol leads to ethyl esters, used to date for applications principally in food and cosmetic industry. To open the application field to biofuels (to substitute current fuels resulting from fossil resources), the process efficiency has to be developed to be economically profitable. In this work, the sunflower oil ethanolysis was performed in a micro-scaled continuous device, inducing better control for heat and mass transfer in comparison with batch processes. Moreover, this device ensures kinetic data acquisition at the first seconds of the reaction, which was not feasible in a conventional batch process. These data were used to model occurring phenomena and to determine kinetic constants and mass transfer coefficients. A single set of these parameters is able to represent the evolution of the reaction media composition function of time for five ethanol to oil molar ratios (6.0, 9.0, 16.2, 22.7 and 45.4). The model was validated in reaction and diffusion mode. Finally, it was subsequently used to simulate reactions with other operational conditions and to propose other process implementation.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Chemical Engineering Science website : http://www.sciencedirect.com/science/article/pii/S0009250912006094
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
French research institutions > Institut National de la Recherche Agronomique - INRA
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Laboratory name:
Laboratoire de Chimie Agro-Industrielle - LCA (Toulouse, France) - Lipochilie et Réacticité Chimique des Agromolécules
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Réaction, mélange & séparation (RMS) - Procédés pour la Chimie Fine
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Deposited By: Laurent PRAT
Deposited On:27 Nov 2012 11:44

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