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The effect of Time Scales in Photosynthesis on microalgae Productivity

Philipp Hartmann 1 Quentin Béchet 2 Olivier Bernard 1, * 
* Corresponding author
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
Abstract : Microalgae are often seen as a potential biofuel producer. In order to predict achievable productivities in the so called raceway culturing system, the dy- namics of photosynthesis has to be taken into account. In particular, the dynami- cal effect of inhibition by an excess of light (photoinhibition) must be represented. We propose a model considering both photosynthesis and growth dynamics. This model involves three different time scales. We study the response of this model to uctuating light with different frequencies by slow/fast approximations. Therefore, we identify three different regimes for which a simplified expression for the model can be derived. These expressions give a hint on productivity improvement which can be expected by stimulating photosynthesis with a faster hydrodynamics.
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Submitted on : Tuesday, August 20, 2013 - 2:04:05 PM
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Philipp Hartmann, Quentin Béchet, Olivier Bernard. The effect of Time Scales in Photosynthesis on microalgae Productivity. Bioprocess and Biosystems Engineering, Springer Verlag, 2014, 37 (1), pp.17-25. ⟨10.1007/s00449-013-1031-2⟩. ⟨hal-00852255⟩



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