Assessment of the Energy Potential of Anaerobic Digestion of Soybean Hulls in Bolivia
摘要
Bolivia faces an energy crisis due to its high dependence on natural gas. Since soybeans account for 40% of the cultivated area, their hulls could be used for biogas production. In this sense, this study estimated their potential through bibliographic analysis and Buswell’s method, obtaining a BMP of 892 mL/g VS with 43.05% methane content. Calculations show that 3.38 kg of SH generates the equivalent of 1 m3 of natural gas, with a potential production of 76 billion m3 of biogas in 2023, covering 16.36% of residential consumption. However, it was determined that pyrolysis generates 26.53% more energy than biogas. The low degradability in mono-digestion suggests that co-digestion with carbon-rich substrates and pretreatments could improve its efficiency.