Research Article
Efficacies of Various Anaerobic Starter Seeds for Biogas Production from Different Types of Wastewater
Table 4
Performances of six selected combinations of different starter seed and wastewater.
| | Parameter | CSsRBw | POsRBw | RBsSMw | SMsPOw | SWsCSw | CSsSWw |
| | (g COD-CH4/g VSS⋅d) | 0.13 | 0.11 | 0.02 | 0.06 | 0.08 | 0.13 |
| | (g COD CH4/g VSS⋅d) | 0.11 | 0.07 | 0.09 | 0.12 | 0.09 | 0.08 |
| | (g COD/g VSS⋅h) | 0.26 | 0.29 | 0.18 | 0.38 | 0.38 | 0.26 |
| | (g COD/g VSS⋅h) | 0.37 | 0.39 | 0.20 | 0.29 | 0.41 | 0.43 |
| | Final OLR (kg COD/m3⋅d) | 1.5 | 1.0 (recovery) | 2.0 | 2.0 | 2.0 | 2.0 |
| | TVA/alkalinity ratio | 0.4–0.6 | 0.4–0.6 | 0.3–0.5 | 0.3–0.5 | 0.5–0.6 | 0.4–0.5 |
| | Av. sCOD removal (%) | 94 | 74 | 96 | 75 | 93 | 87 |
| | Av. tCOD removal (%) | 85 | 55 | 76 | 57 | 79 | 67 |
| | Av. biogas production (mL/d) | 289 | 160 | 284 | 457 | 285 | 209 |
| | Av. CH4 production (mL/d) | 185 | 90 | 203 | 320 | 192 | 157 |
| | CH4 yield (L/kg ) | 123 | 90 | 101 | 160 | 96 | 78 |
| | OLR achieved | Not reach OLR2, max. OLR 1.5 | Fail at OLR 1.5, at recovered OLR 1.0 | OLR 2 at day 35 | OLR 2 at day 25 | OLR 2 at day 35 | OLR 2 at day 35 |
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