Table 2. Concentrations of carbon (C) and nitrogen (N) compounds in the influent medium and the steady-state reactor in experiments examining the effect of C/N ratios on respiratory ammonification and denitrification pathways in Shewanella loihica strain PV-4.
| C/N ratio |
Measured influent concentrations (mM) |
Measured steady-state concentrations (mM) |
||||||
|---|---|---|---|---|---|---|---|---|
| Lactate | NO3− | NH4+ | NO3− | NO2− | NH4+ | Lactate | Acetate | |
| 7.5 | 5.04 (0.03) | 1.96 (0.10) | 0.46 (0.03) | 0 | 0 | 1.79 (0.01) | 0.51 (0.01) | 3.98 (0.09) |
| 6.0 | 3.91 (0.18) | 2.03 (0.01) | 0.47 (0.01) | 0 | 0 | 1.48 (0.01) | 0.05 (0.01) | 2.93 (0.05) |
| 4.5 | 2.82 (0.07) | 2.03 (0.02) | 0.44 (0.02) | 0 | 0 | 0.88 (0.01) | 0 | 2.33 (0.10) |
| 3.0 | 2.15 (0.00) | 1.89 (0.00) | 0.50 (0.02) | 0 | 0 | 0.29 (0.05) | 0 | 1.47 (0.06) |
| 1.5 | 1.04 (0.03) | 1.90 (0.03) | 0.48 (0.03) | 0.18 (0.15) | 0.14 (0.13) | 0.20 (0.02) | 0 | 0 |
The averages of duplicate measurements are presented with the s.d. indicated in parentheses.