Table 3 H 2 production by T. thermosaccharolyticum M18 on polymeric substrates after 96Â h fermentation
From: Single-step bioconversion of lignocellulose to hydrogen using novel moderately thermophilic bacteria
Parameters | Lignocellulosic substrates | |||||
|---|---|---|---|---|---|---|
Corn stalk | Wheat straw | Corn cob | ||||
Unwashed | Washed | Unwashed | Washed | Unwashed | Washed | |
Initial substrates (g/L) | 5.0 ± 0.02 | 5.0 ± 0.01 | 5.0 ± 0.01 | 5.0 ± 0.02 | 5.0 ± 0.03 | 5.0 ± 0.00 |
Residual substrate (g/L) | 2.58 ± 0.05 | 2.47 ± 0.14 | 2.49 ± 0.22 | 2.43 ± 0.28 | 2.02 ± 0.10 | 1.93 ± 0.14 |
Insoluble carbohydrates utilized (%) | 56.07 ± 1.46 | 57.12 ± 2.18 | 59.23 ± 2.56 | 52.07 ± 2.43 | 62.71 ± 3.11 | 58.88 ± 2.72 |
Maximum H2 production (mmol/L) | 8.42 ± 1.42 | 8.30 ± 0.88 | 8.86 ± 0.44 | 8.98 ± 0.32 | 9.65 ± 1.48 | 9.88 ± 0.76 |
H2 production rate (mmol/L/h) | 0.10 ± 0.02 | 0.09 ± 0.02 | 0.11 ± 0.02 | 0.11 ± 0.02 | 0.13 ± 0.03 | 0.11 ± 0.02 |
H2 yield (mmol/g substrate) | 3.47 ± 0.11 | 3.28 ± 0.33 | 3.53 ± 0.24 | 3.49 ± 0.18 | 3.23 ± 0.30 | 3.27 ± 0.21 |