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Modelling microalgae growth in nitrogen limited photobiorector for estimating biomass, carbohydrate and neutral lipid productivities

Francis Mairet 1, 2 Olivier Bernard 2 Thomas Lacour 3 Antoine Sciandra 2, 3
2 BIOCORE - Biological control of artificial ecosystems
LOV - Laboratoire d'océanographie de Villefranche, CRISAM - Inria Sophia Antipolis - Méditerranée , INRA - Institut National de la Recherche Agronomique
Abstract : Microalgae culture for energy production has emerged as an interesting alternative to fossil fuel and biofuel from terrestrial plants. In this paper, we propose a dynamical model of microalgae growth in photobioreactor in order to further optimize productivity. We consider light and nitrogen effects on microalgae growth and on the intracellular carbon flows between a functional compartment (proteins, nucleic acids, membranes) and two storage pools (carbohydrates and neutral lipids). In a second step, we take into account the photoacclimation dynamics. We also compute the light distribution inside the photobioreactor using a Beer-Lambert law. The proposed model has been assessed with experimental data of Isochrysis affinis galbana under day/night cycles. Finally, the model is used to predict carbohydrate, neutral lipid, and biomass productivities and to identify optimal operating conditions (dilution rate and influent nitrogen concentration).
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https://hal.inria.fr/hal-00848427
Contributor : Jean-Luc Gouzé <>
Submitted on : Friday, July 26, 2013 - 10:32:02 AM
Last modification on : Thursday, July 1, 2021 - 3:36:04 AM

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Francis Mairet, Olivier Bernard, Thomas Lacour, Antoine Sciandra. Modelling microalgae growth in nitrogen limited photobiorector for estimating biomass, carbohydrate and neutral lipid productivities. IFAC World Congress, 2011, Milano, Italy. ⟨10.3182/20110828-6-IT-1002.03165⟩. ⟨hal-00848427⟩

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