Table 1. The composition of several components in biogas production [2].
| Components | Composition, % |
|---|---|
| CO2 | 30–40 |
| CH4 | 60–70 |
| H2S | 0.15–3.0 |
| NH3 | < 1 |
| N2 | 0–2 |
| CO | < 0.6 |
| O2 | 0–1 |
| H2O | 5–10 |
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