Proposed kinetic mechanism of biodiesel production through lipase catalysed interesterification with a methyl acetate acyl acceptor and ionic liquid [BMIM][PF6] co-solvent

Authors

  • Nicholas Ivan Ruzich,

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    1. Faculty of Engineering, Department of Chemical and Biochemical Engineering, University of Western Ontario, London, Ontario, Canada N6A 5B9
    • Faculty of Engineering, Department of Chemical and Biochemical Engineering, University of Western Ontario, London, Ontario, Canada N6A 5B9
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  • Amarjeet S. Bassi

    1. Faculty of Engineering, Department of Chemical and Biochemical Engineering, University of Western Ontario, London, Ontario, Canada N6A 5B9
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Abstract

The production of biodiesel was investigated using a lipase-catalysed (Novozym 435) reaction involving methyl acetate and ionic liquid [BMIM][PF6] as a co-solvent to produce an environmentally friendly, “green” process. Experiments were conducted at various amounts of ionic liquid. The reaction mechanism was examined through use of kinetic modelling and the effect of ionic liquid was studied for the first time. Studies indicated that the reaction followed a Ping–Pong Bi–Bi mechanism, and that the ionic liquid present in the system led to reduced initial reaction rates due to mass transfer limitations.

Abstract

On a étudié la production de biodiésel au moyen d'une réaction catalysée par une lipase (Novozym 435) comprenant l'acétate de méthyle et le liquide ionique [BMIM][PF6] comme cosolvant pour produire un procédé « vert » qui respecte l'environnement. Des expériences ont été réalisées avec diverses quantités de liquide ionique. Le mécanisme de réaction a été examiné par l'utilisation d'une modélisation cinétique et on a étudié l'effet du liquide ionique pour la première fois. Les études ont indiqué que la réaction a suivi un mécanisme Ping–Pong Bi–Bi et que le liquide ionique présent dans le système a mené à des taux de réaction initiaux réduits en raison des limites du transfert de masse.

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