title: Investigation and modeling of the effects of light spectrum and incident angle on the growth of Chlorella vulgaris in photobioreactors.
abstract: An in-depth investigation of how various illumination conditions influence microalgal growth in photobioreactors (PBR) has been presented. Effects of both the light emission spectrum (white and red) and the light incident angle (0° and 60°) on the PBR surface were investigated. The experiments were conducted in two fully controlled lab-scale PBRs, a torus PBR and a thin flat-panel PBR for high cell density culture. The results obtained in the torus PBR were used to build the kinetic growth model of Chlorella vulgaris taken as a model species. The PBR model was then applied to the thin flat-panel PBR, which was run with various illumination conditions. Its detailed representation of local rate of photon absorption under various conditions (spectral calculation of light attenuation, incident angle influence) enabled the model to take into account all the tested conditions with no further adjustment. This allowed a detailed investigation of the coupling between radiation field and photosynthetic growth. Effects of all the radiation conditions together with pigment acclimation, which was found to be relevant, were investigated in depth. © 2016 American Institute of Chemical Engineers Biotechnol. Prog., 32:247-261, 2016.
authors: CNRS, Laboratoire de Génie des Procédés - Environnement - Agroalimentaire, Université De Nantes, UMR 6144, 37 Boulevard De L'université, BP 406, Saint-Nazaire Cedex, 44602, France.
authors: Antoine
authors: A
authors: Souliès
authors: CNRS, Laboratoire de Génie des Procédés - Environnement - Agroalimentaire, Université De Nantes, UMR 6144, 37 Boulevard De L'université, BP 406, Saint-Nazaire Cedex, 44602, France.
authors: Jack
authors: J
authors: Legrand
authors: CNRS, Laboratoire de Génie des Procédés - Environnement - Agroalimentaire, Université De Nantes, UMR 6144, 37 Boulevard De L'université, BP 406, Saint-Nazaire Cedex, 44602, France.
authors: Hélène
authors: H
authors: Marec
authors: CNRS, Laboratoire de Génie des Procédés - Environnement - Agroalimentaire, Université De Nantes, UMR 6144, 37 Boulevard De L'université, BP 406, Saint-Nazaire Cedex, 44602, France.
authors: Jérémy
authors: J
authors: Pruvost
authors: CNRS, Laboratoire de Thermocinétique de Nantes, Université De Nantes, UMR 6607, La Chantrerie, Rue Christian-Pauc, BP 50609, Nantes Cedex 3, 44306, France.
authors: Cathy
authors: C
authors: Castelain
authors: CNRS, Laboratoire de Thermocinétique de Nantes, Université De Nantes, UMR 6607, La Chantrerie, Rue Christian-Pauc, BP 50609, Nantes Cedex 3, 44306, France.
authors: Teodor
authors: T
authors: Burghelea
authors: Université Clermont Auvergne, Sigma-Clermont, Institut Pascal, UMR CNRS 6602, BP 10448, F63000, Clermont-Ferrand, France.
authors: Jean-François
authors: JF
authors: Cornet
mesh_terms: D018929:Cell Culture Techniques; D048408:Chlorella vulgaris / Q000254:growth & development* / Q000528:radiation effects*; D008027:Light; D008954:Models, Biological; D058433:Photobioreactors; D013499:Surface Properties
keywords: Chlorella vulgaris; incident angle; microalgae; modeling; photobioreactor; radiative transfer; red light; spectral effect