Journal article
Hydrogen production by Rhodobacter sphaeroides DSM 158 under intense irradiation
Institute of Food Technology and Bioprocess Engineering, TU Dresden, Bergstraße 120, 01069 Dresden, Germany. Electronic address: Felix.Krujatz@tu-dresden.de.1
Institute of Food Technology and Bioprocess Engineering, TU Dresden, Bergstraße 120, 01069 Dresden, Germany. Electronic address: paulhaertel@gmx.de.2
Institute of Food Technology and Bioprocess Engineering, TU Dresden, Bergstraße 120, 01069 Dresden, Germany. Electronic address: Karsten.Helbig@tu-dresden.de.3
Institute of Physical Chemistry, TU Dresden, Eisenstuckstraße 5, 01069 Dresden, Germany. Electronic address: Nora.Haufe@tu-dresden.de.4
Institute of Food Technology and Bioprocess Engineering, TU Dresden, Bergstraße 120, 01069 Dresden, Germany. Electronic address: Simone.Thierfelder@tu-dresden.de.5
Institute of Food Technology and Bioprocess Engineering, TU Dresden, Bergstraße 120, 01069 Dresden, Germany. Electronic address: Thomas.Bley@tu-dresden.de.6
Institute of Food Technology and Bioprocess Engineering, TU Dresden, Bergstraße 120, 01069 Dresden, Germany. Electronic address: Jost.Weber@tu-dresden.de.7
To identify optimal hydrogen production conditions using growing cultures of Rhodobacter sphaeroides DSM 158 the effects of varying the reactor's volumetric power input (0.01-1.4kWm(-3)) and irradiation intensity (5-2500Wm(-2)) were investigated in batch and continuous production modes. Irradiation intensity had a greater effect on hydrogen production than volumetric power input.
Hydrogen production and photofermentative biomass formation were maximized by irradiation at 2250Wm(-2) with a volumetric power input of 0.55kWm(-3). The bacterial dry weight (2.64gL(-1)) and rate of hydrogen production (195mLL(-1)h(-1)) achieved under these conditions were greater than any that have previously been reported for batch-mode hydrogen production by R. sphaeroides.
Continuous mode experiments (D=0.1h(-1)) yielded a bacterial dry weight, hydrogen production rate, productivity and hydrogen yield of 2.35±0.18gL(-1), 165±6.2mLL(-1)h(-1), 3.96LL(-1)d(-1) and 36.6%, respectively.
| Language: | English |
|---|---|
| Year: | 2015 |
| Pages: | 82-90 |
| ISSN: | 09608524 and 18732976 |
| Types: | Journal article |
| DOI: | 10.1016/j.biortech.2014.10.061 |
