Three-reaction model for the anaerobic digestion of microalgae

Francis Mairet 1, 2 Olivier Bernard 1 Elliot Cameron 3 Monique Ras 4 Laurent Lardon 4 Jean-Philippe Steyer 1, 4 Benoît Chachuat 3, 5
1 BIOCORE - Biological control of artificial ecosystems
LOV - Laboratoire d'océanographie de Villefranche, CRISAM - Inria Sophia Antipolis - Méditerranée , INRA - Institut National de la Recherche Agronomique
2 Anlysis and Mathematical Modeling, Valparaiso
Departamento de Matematica [Valparaiso]
Abstract : Coupling an anaerobic digester to a microalgal culture has received increasing attention as an alternative process for combined bioenergy production and depollution. In this article, a dynamic model for anaerobic digestion of microalgae is developed with the aim of improving the management of such a coupled system. This model describes the dynamics of inorganic nitrogen and volatile fatty acids since both can lead to inhibition and therefore process instability. Three reactions are considered: Two hydrolysis-acidogenesis steps in parallel for sugars/lipids and for proteins, followed by a methanogenesis step. The proposed model accurately reproduces experimental data for anaerobic digestion of the freshwater microalgae Chlorella vulgaris with an organic loading rate of 1 gCOD L−1 d−1. In particular, the three-reaction pathway allows to adequately represent the observed decoupling between biogas production and nitrogen release. The reduced complexity of this model makes it suitable for developing advanced, model-based control and monitoring strategies
Type de document :
Article dans une revue
Biotechnology and Bioengineering, Wiley, 2012, 109 (2), pp.415-425
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Contributeur : Jean-Luc Gouzé <>
Soumis le : vendredi 26 juillet 2013 - 10:31:59
Dernière modification le : jeudi 11 janvier 2018 - 17:07:44


  • HAL Id : hal-00848426, version 1



Francis Mairet, Olivier Bernard, Elliot Cameron, Monique Ras, Laurent Lardon, et al.. Three-reaction model for the anaerobic digestion of microalgae. Biotechnology and Bioengineering, Wiley, 2012, 109 (2), pp.415-425. 〈hal-00848426〉



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