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 (molH 2 mol of substrate consumed -1 ) | Percentage of H 2 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 | |