Research Article
Simultaneous Coproduction of Hydrogen and Ethanol in Anaerobic Packed-Bed Reactors
Table 3
SMP distribution in studies using APBRs for hydrogen production.
| Reference | Substrate (support material) | HRT (h) | EtOH/SMP (%) | HAc/SMP (%) | HPr/SMP (%) | HBu/SMP (%) | MetOH/SMP (%) | HVl/SMP (%) | HCpr/SMP (%) | TVFA (mmol L−1) | SMP (mmol L−1) | HAc/HBu* | HAc/EtOH* |
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Chang et al. [1]** | Sucrose (expanded clay) | 5 | 46.3 | 27.2 | 17.4 | 9.1 | — | — | — | 29.9 | 55.8 | 2.9 | 0.6 | 2 | 42.7 | 24.9 | 24.6 | 7.8 | — | — | — | 44.5 | 77.7 | 3.2 | 0.6 | 1 | 25.3 | 31.1 | 33.9 | 9.7 | — | — | — | 50.7 | 67.9 | 3.2 | 1.2 | 0.5 | 19.5 | 29.4 | 39.3 | 11.7 | — | — | — | 64.2 | 79.9 | 2.5 | 1.5 |
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Lee et al. [2]** | Sucrose (activated carbon) | 4 | 1.6 | 31.3 | 36.8 | 29.7 | — | 0.6 | — | 94.9 | 96.5 | 1.1 | 19.3 | 2 | 21.0 | 20.8 | 16.6 | 37.8 | — | 3.9 | — | 89.2 | 112.8 | 0.6 | 1.0 | 1 | 9.6 | 19.2 | 23.4 | 41.8 | — | 6.0 | — | 147.4 | 163.0 | 0.5 | 2.0 | 0.5 | 10.3 | 20.6 | 24.7 | 41.2 | — | 3.2 | — | 136.2 | 151.8 | 0.5 | 2.0 |
| Zhang et al. [3] | Glucose (glass beads) | 1.3*** | — | 70.6 | — | 29.4 | — | — | — | 1.7 | 1.7 | 2.4 | — |
| Wu et al. [4] | Fructose (POE) | 4 | 52.8 | 25.1 | 10.1 | 12.1 | — | — | — | 355.7 | 616.3 | 2.1 | 0.5 |
| Wu et al. [4] | Sucrose (POE) | 4 | 62.0 | 29.9 | 1.9 | 6.2 | — | — | — | 605.7 | 1302.2 | 4.8 | 0.5 |
| Wu et al. [4] | Glucose (POE) | 4 | 69.2 | 22.3 | 1.3 | 7.1 | — | — | — | 418.5 | 1064.4 | 3.1 | 0.3 |
| Leite et al. [5] | Glucose (expanded clay) | 0.5 | — | 57.9 | 3.0 | 34.0 | — | — | 5.1 | 12.9 | 12.9 | 1.7 | — |
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HVl: valeric acid. HCpr: caproic acid.
*Molar ratio, **based on article data, and ***HRT = reactor volume/influent flow rate.
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