TABLE 4.
Proportion of hydrogen utilized for methane in Orange Pond sediments
| Initial H2 level (kPa) | Amt of H2 utilized (μmol)a | Amt of methane produced (μmol)a | % H2 utilized for methane productionb |
|---|---|---|---|
| 0 | 0 | 3.30 ± 0.54 | 0 |
| 3 | 8.96 ± 1.76 | 5.14 ± 0.35 | 82.1 |
| 6 | 12.21 ± 0.41 | 5.79 ± 0.39 | 81.6 |
| 12 | 23.73 ± 6.27 | 6.48 ± 0.22 | 53.5 |
| 28 | 46.44 ± 5.50 | 7.88 ± 0.21 | 39.4 |
a
Determined after 74 h of incubation. Values are means of at least duplicate determinations ± standard deviation.
b
Determined according to the equation CO2 + 4H2 → CH4 + 2H2O in which methane was subtracted from the control.