Anaerobic co-digestion of spent coffee grounds with different waste feedstocks for biogas production

摘要: Proper management of spent coffee grounds has become a challenging problem as the production this waste residue increased rapidly worldwide. This study investigated feasibility anaerobic co-digestion ground with various organic wastes, i.e., food waste, Ulva, activated sludge, and whey, for biomethanation. The effect was evaluated each tested co-substrate in batch biochemical methane potential tests by varying substrate mixing ratio. Co-digestion sludge had an apparent negative on both yield rate methane. Meanwhile, other co-substrates enhanced reaction while maintaining at comparable or higher level to that mono-digestion ground. proportion without significant loss methanation potential. These results suggest reduce time thus reactor capacity compromising production.