Hydrogen production by Rhodobacter sphaeroides DSM 158 under intense irradiation.
Bioresour Technol
; 175: 82-90, 2015 Jan.
Article
em En
| MEDLINE
| ID: mdl-25459807
ABSTRACT
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.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Rhodobacter sphaeroides
/
Fotobiorreatores
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Hidrogênio
Idioma:
En
Revista:
Bioresour Technol
Ano de publicação:
2015
Tipo de documento:
Article