TABLE 4.
Experimental H2 thresholds for different acetogens performing acetogenesis from CO2 and H2.
| Strain | H2 threshold (Pa) | Conditionsa | References |
| Acetitomaculum ruminis | 384b | 38°C, 24% CO2 | Le Van et al., 1998 |
| Acetobacterium bakii | 8–80 | 4–30°C, 20% CO2 | Kotsyurbenko et al., 2001 |
| Acetobacterium carbinolicum | 96b | 28–34°C, 20% CO2, 1 bar | Cord-Ruwisch et al., 1988 |
| 5–20 | 5–25°C, 2 mM acetate, pH 7, 28 kPa CO2 | Conrad and Wetter, 1990 | |
| Acetobacterium fimetarium | 15–80 | 4–30°C, 20% CO2 | Kotsyurbenko et al., 2001 |
| Acetobacterium paludosum | 15–150 | 4–30°C, 20% CO2 | Kotsyurbenko et al., 2001 |
| Acetobacterium psammolithicum | 53c | 30°C | Krumholz et al., 1999 |
| Acetobacterium tundrae | 10–100 | 4–30°C, 20% CO2 | Kotsyurbenko et al., 2001 |
| Acetobacterium woodii | 53b | 28–34°C, 20% CO2, 1 bar | Cord-Ruwisch et al., 1988 |
| 250 | 30°C, 20% CO2 | Poehlein et al., 2012 | |
| 14–55 | 15–30°C, 2 mM acetate, pH 7, 28 kPa CO2 | Conrad and Wetter, 1990 | |
| 37b | 30°C, 24% CO2 | Le Van et al., 1998 | |
| 18b | 30°C, 20% CO2, 1 atm | Leclerc et al., 1997 | |
| Moorella thermoacetica | 156b | 30°C, 20% CO2, 1 atm | Leclerc et al., 1997 |
| Sporomusa termitida | 84b | 28–34°C, 20% CO2, 1 bar | Cord-Ruwisch et al., 1988 |
| 88b | 30°C, 24% CO2 | Le Van et al., 1998 | |
| Thermoanaerobacter kivui | 300–600 | 50–60°C, 2 mM acetate, pH 7, 28 kPa CO2 | Conrad and Wetter, 1990 |
| Treponema primitia | 50b | 30°C, 20% CO2 | Graber and Breznak, 2004 |
aConditions are mentioned as far as they are reported in the cited reference. bH2 thresholds were converted from ppm values assuming a total pressure of 1 atm. cThe H2 threshold was converted using a Henri coefficient for H2 of 7.78 10–3 mol m–3 kPa–1.