Table 6.
Different biological pretreatments applied to the production of biogas
| Biomass | Pretreatment | Degradation of hemicellulose (%) | Degradation of lignin (%) | Anaerobic digestion | Ybiogas | YAP | YBP | References |
|---|---|---|---|---|---|---|---|---|
| Corn stover silage | Fungal pretreatment (Phanerochaete chrysosporium) at 28 °C, 30 days | 32.4 | 22.6 | Batch, 37 °C, 30 days | Close to 500 mL g−1 VS | 265.1 mLCH4 g−1 VS | 215.5 mL CH4 g−1 VS | Liu et al. (2014) |
| Agropyron elongatum | Fungal (Flammulina velutipes) at 28 °C, 28 days | 29 | 35.4 | Batch, 37 °C, pH 7 and around 23 days | 398.1 mL g−1 VS | 169.2 mL CH4 g−1 VS | 125.75 mL CH4 g−1 VS | Lalak et al. (2016) |
| Rice straw | Acid oxalic + enzymatic (cellulase) at 45 °C for 72 h, 200 rpm | – | 63.1 | Batch, 35 °C, pH 7, 45 days | 318.3 mL g−1 rice straw | – | 50.84 mL biogas g−1 VS | Amnuaycheewa et al. (2016) |
| Rice straw | Acid citric + enzymatic (cellulase) at 45 °C for 72 h, 200 rpm | – | 20.8 | Batch, 35 °C, pH 7, 45 days | 322.1 mL g−1 rice straw | – | 50.84 mL biogas g−1 VS | Amnuaycheewa et al. (2016) |
| Corn stover | Enzymatic (laccase and Trametes versicolor) at 30 °C, 6 h | – | – | Batch, 30 days | 238.4 mL CH4 | 191.7 mL CH4 | Schroyen et al. (2015) | |
| Rice straw | Fungal (Pleurotus ostreatus) at 28 °C, 20 days | – | 33.4 | Batch, 37 °C, 20 days | 367 mL g−1 VS | 263 mL CH4 g−1 VS | 127 mL CH4 g−1 VS | Mustafa et al. (2016) |
| Yard trimmings | Fungal (Ceriporiopsis subvermispora) at 28 °C, 30 days | 9.8–16.2 | 14.8–20.2 | Batch, 37 °C, 28 days | – | 34.9–44.6 mLCH4 g−1 VS | 20 mL CH4 g−1 VS | Zhao et al. (2014) |
APAfter pretreatment
BPBefore pretreatment