Reliable determination of the growth and hydrogen production parameters of the photosynthetic bacterium $Rhodobacter\ capsulatus$ in fed batch culture using a combination of the Gompertz function and the Luedeking-Piret model - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Heliyon Année : 2021

Reliable determination of the growth and hydrogen production parameters of the photosynthetic bacterium $Rhodobacter\ capsulatus$ in fed batch culture using a combination of the Gompertz function and the Luedeking-Piret model

Résumé

In this study, experimental results of hydrogen producing process based on anaerobic photosynthesis using the purple non-sulfur bacterium Rhodobacter capsulatus are scrutinized. The bacterial culture was carried out in a photo-bioreactor operated in a quasi-continuous mode, using lactate as a carbon source. The method is based on the continuous stirred tank reactors (CSTR) technique to access kinetic parameters. The dynamic evolution of hydrogen production as a function of time was accurately simulated using Luedeking-Piret model and the growth of R. capsulatus was computed using Gompertz model. The combination of both models was successfully applied to determine the relevant parameters (λ, μ$_{max}$, α and β) for two R. capsulatus strains studied: the wild-type strain B10 and the H$_2$ over-producing mutant IR3. The mathematical description indicates that the photofermentation is more promising than dark fermentation for the conversion of organic substrates into biogas.
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hal-03287603 , version 1 (16-07-2021)

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Paternité - Pas d'utilisation commerciale - Pas de modification

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Jonathan Deseure, Jamila Obeid, John Willison, Jean-Pierre Magnin. Reliable determination of the growth and hydrogen production parameters of the photosynthetic bacterium $Rhodobacter\ capsulatus$ in fed batch culture using a combination of the Gompertz function and the Luedeking-Piret model. Heliyon, 2021, 7 (7), pp.e07394. ⟨10.1016/j.heliyon.2021.e07394⟩. ⟨hal-03287603⟩
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