Abstract:
: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 H2 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 H2 /L/h) achieved is one of the highest values so far reported for H2 production by R. capsulatus. These first results are encouraging for future scale-up of the plate-type reactor.
journal_name
Biotechnol Bioengjournal_title
Biotechnology and bioengineeringauthors
Turon V,Ollivier S,Cwicklinski G,Willison JC,Anxionnaz-Minvielle Zdoi
10.1002/bit.27656subject
Has Abstractpub_date
2020-12-15 00:00:00eissn
0006-3592issn
1097-0290pub_type
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