Table 3.
Ratio for the rate of CH4 production with added substrate versus un-amended control.
| Month | Chicago |
McLean |
Michigan |
||||||
|---|---|---|---|---|---|---|---|---|---|
| +Acet | +Rif | +H2 + Rif | +Acet | +Rif | +H2 + Rif | +Acet | +Rif | +H2 + Rif | |
| Jun | 1.6 | 0.5 | 2.3 | 2.2 | 1.1 | 5.2 | 10.2 | ND | ND |
| Aug | 2.0 | ND | ND | 3.0 | ND | ND | 9.2 | ND | ND |
| Sep/Oct | 2.1 | 0.6 | 7.0 | 3.9 | 1.0 | 11.7 | 14.4 | 3.0 | 6.3 |
| Jan | 1.6 | 1.2 | 17.5 | 1.3 | 0.4 | 4.4 | |||
| Apr | 1.4 | 0.5 | 5.7 | 1.9 | 0.8 | 7.3 | 1.4 | 0.8 | 1.4 |
| May | 1.9 | 0.7 | 6.7 | 1.5 | 0.6 | 2.8 | 1.1 | 0.5 | 4.0 |
| Jul | 1.4 | 1.1 | 3.6 | 1.4 | 0.9 | 2.0 | 1.1 | 0.6 | 1.1 |
ND, no data. Substrates were either acetate (Acet), rifampicin (Rif), or H2 plus rifampicin (+H2 + Rif).