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Gas–liquid interfacial area in the oxygen absorption to oil-in-water emulsions in an airlift reactor

Authors

  • D. Gómez-Díaz,

    Corresponding author
    1. Department of Chemical Engineering, University of Santiago de Compostela, Campus Sur, Santiago de Compostela E-15782, Spain
    • Department of Chemical Engineering, University of Santiago de Compostela, Campus Sur, Santiago de Compostela E-15782, Spain.
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  • N. Gomes,

    1. IBB-Institute for Biotechnology and Bioengineering, Center of Biological Engineering, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal
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  • J. A. Teixeira,

    1. IBB-Institute for Biotechnology and Bioengineering, Center of Biological Engineering, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal
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  • I. Belo

    1. IBB-Institute for Biotechnology and Bioengineering, Center of Biological Engineering, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal
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Abstract

The present work includes an exhaustive study about gas–liquid interfacial area between gas phase and liquid heterogeneous medium generated in an airlift bioreactor. The system studied is composed by water, methyl ricinoleate (MR), and Tween-80, since it is the base of the medium used for the production of γ-decalactone, a peach-like aroma compound of industrial interest that can be produced biotechnologically through the biotransformation of ricinoleic acid, by the yeast Yarrowia lipolytica. Experimental results allow describing the hydrodynamic behaviour of the gas phase into the biphasic medium.

Abstract

Le travail actuel comprend une étude approfondie sur la zone interfaciale gaz-liquide entre la phase gazeuse et le milieu hétérogène liquide produit par un bioréacteur à agitation par circulation d'air. Le système étudié se compose d'eau, de ricinoléate de méthyle et de Tween 80, puisqu'il constitue la base du milieu utilisé pour la production de γ-decalactone, un composé d'arôme semblable à la pêche d'intérêt industriel que l'on peut produire de façon biotechnologique par la biotransformation de l'acide ricinoléique (un important constituant du ricinoléate de méthyle), par la levure Yarrowia lipolytica. Les résultats expérimentaux permettent de décrire le comportement hydrodynamique de la phase gazeuse dans le milieu biphasique.

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