Table 1 Overview of the investigated technical plants
Plant # | Type | Substrate | Archaeal cluster | Bacterial cluster |
|---|---|---|---|---|
1 (agricultural biogas plant)a | Fermenter—post digester | A B C | A2 | B2 |
2 (agricultural biogas plant) | Single stage fermenter | A B C E | A1 | B1 |
3 (agricultural biogas plant) | Fermenter—post digester | A D | A2 | B2 |
4 (agricultural biogas plant) | Box digester | A C | A2 | None |
5 (agricultural biogas plant) | Fermenter—post digester | A E | A3 | B2 |
6 (agricultural biogas plant) | Single stage fermenter | A B | A1/A3 | B1 |
7 (agricultural biogas plant) | Fermenter—post digester | A C E | A3 | B2 |
8 (agricultural biogas plant) | Fermenter—post digester | A B E | A1 | B2 |
9 (agricultural biogas plant) | Single stage fermenter | B F | A1/A2 | B1 |
10 (agricultural biogas plant) | Fermenter—post digester | A B | A2 | B2 |
11 (agricultural biogas plant) | Fermenter—post digester | A B | A3 | None |
12 (agricultural biogas plant) | Fermenter—post digester | A C E | A3 | B2 |
13 (agricultural biogas plant) | Fermenter—post digester | B C D | A3 | B2 |
14 (sewage sludge digester)a | Single stage digester | G | None | None |
15 (sewage sludge digester) | Single stage digester | G | None | None |