TABLE 3.
Effect of deactivation procedures on the T2 and D/Daq ratio of methanogenic aggregates
| Sample type | Da (10−9 m2/s) | T2 (ms) | D/Daq (%) |
|---|---|---|---|
| Pulp and paper wastewater (Eerbeek)b | |||
| Intact | 1.39 ± 0.01 | 42.0 | 64 |
| Deactivated with: | |||
| Glutaraldehyde | 1.14 ± 0.01 | 27.0 | 52 |
| HgCl2 | 1.39 ± 0.02 | 45.0 | 64 |
| Heat (70°C) | 1.88 ± 0.04 | 58.8 | 87 |
| Heat (97°C) | 1.99 ± 0.03 | 78.9 | 92 |
| Citric acid (Ringaskiddy) | |||
| Intact | 1.32 ± 0.02 | 45.3 | 61 |
| Deactivated with: | |||
| Glutaraldehyde | 1.08 ± 0.03 | 22.0 | 47 |
| HgCl2 | 1.34 ± 0.01 | 43.5 | 62 |
| Heat (70°C) | 1.54 ± 0.02 | 65.7 | 71 |
| Heat (97°C) | 1.77 ± 0.03 | 73.5 | 82 |
a
Values are means ± standard deviations from triplicate experiments.
b
Measurements using the sludge fraction with a diameter of >1.4 mm.