Table 1 Optimal pH ranges for H 2 production by pure Clostridium strains and co-cultures determined during one-stage glucose fermentation (first sequence) at unregulated pH
Strain/ co-culture | pH value | |
|---|---|---|
| Â | Optimal | Inhibitory |
C. beijerinckii DSM 1820 | 6.7 | 5.2 |
C. butyricum CWBI 1009 | 5.15 | 4.7 |
C. pasteurianum DSM 525 | 5.4 | 4.6 |
C. felsineum DSM 794 | 5.5 | 5 |
Co-culture 1 | 5.3 | 4.7 |
Co-culture 2 | 5.3 | 4.6 |
Co-culture 3 | 5.3 | 5.0 |