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Article Dans Une Revue Biotechnology and Bioengineering Année : 2021

H-2 production by photofermentation in an innovative plate-type photobioreactor with meandering channels

Résumé

Hydrogen production by Rhodobacter capsulatus is an anaerobic, photobiological process requiring specific mixing conditions. In this study, an innovative design of a photobioreactor is proposed. The design is based on a plate-type photobioreactor with an interconnected meandering channel to allow culture mixing and H-2 degassing. The culture flow was characterized as a quasi-plug-flow with radial mixing caused by a turbulent-like regime achieved at a low Reynolds number. The dissipated volumetric power was decreased 10-fold while maintaining PBR performances (production and yields) when compared with a magnetically stirred tank reactor. To increase hydrogen production flow rate, several bacterial concentrations were tested by increasing the glutamate concentration using fed-batch cultures. The maximum hydrogen production flow rate (157.7 +/- 9.3 ml H-2/L/h) achieved is one of the highest values so far reported for H-2 production by R. capsulatus. These first results are encouraging for future scale-up of the plate-type reactor.
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Dates et versions

hal-03166973 , version 1 (11-03-2021)

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Violette Turon, Stéphane Ollivier, Grégory Cwicklinski, John C. Willison, Zoé Anxionnaz-Minvielle. H-2 production by photofermentation in an innovative plate-type photobioreactor with meandering channels. Biotechnology and Bioengineering, 2021, 118 (3), pp.1342-1354. ⟨10.1002/bit.27656⟩. ⟨hal-03166973⟩
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