Table 2.
Substrate consumption and hydrogen yields from batchexperiments.
| Non Headspace Flushing (NHF) | |||||
|---|---|---|---|---|---|
| pH | Substrate | Substrate consumed (%) | Yield (molH2 mol of substrate consumed-1) |
Percentage of H2 produced from the theoretical yield (%) |
pH at the end of the batch experiment |
| 5.5 | arabinose | 65 | 0.68 ± 0.05 | 20 | 5.8 |
| glucose | 87 | 0.67 ± 0.13 | 17 | 5.2 | |
| Headspace Flushing (HF) | |||||
| pH | Substrate | Substrate consumed (%) | Yield (molH2 mol of substrate consumed-1) |
Percentage of H2 produced from the theoretical yield (%) |
pH at the end of the batch experiment |
| 5.5 | arabinose | 84 | 0.76 ± 0.06 | 23 | 5.3 |
| glucose | 100 | 0.58 ± 0.07 | 15 | 5.2 | |
| 7 | arabinose | 100 | 1.15 ± 0.03 | 35 | 6.5 |
| glucose | 100 | 1.36 ± 0.14 | 34 | 6.8 | |