Vol. 7, Issue 2, Part B (2025)

The effect of hydrothermal pretreatment (HTP) on the biogas production through the anaerobic co-digestion have been studied around the world. HTP of rice straw (100-180°C) has an impact on the biogas production and methane yield on anaerobic co-digestion and the optimal HTP condition was at a temperature of 160°C for rice straw. The maximum biogas production and methane yield was observed with HTP at 140°C for tofu residue, reaching 306 mL biogas/g VS and 200.1 mL CH4/g VS respectively. These results can be used to design an effect anaerobic co-digestion process on management, effectively utilizing rice straw and tofu residue for renewable bio-energy production.