(466a) Effective Combination of Reactors for Biomass Feedstock for High-Efficiency Power Generation from Manure

Utilization of manure for power generation is important for renewable energy supply. However, conventional methane fermentation has limitation due to ammonia inhibition. In this study, combination of reactors for biomass feedstock achieved improved power generation. Hydrothermal pretreatment allowed ammonia generation as well as improved fermentability. The treated feedstock is then fed to high-temperature biomethanation where ammonia is removed into gas phase and adsorbed onto ammonia adsorber. The ammonia is then electrolyzed with a part of produced electricity into nitrogen and hydrogen while biogas is used as engine fuel for power generation. Hydrogen is fed to the engine to enhance the efficiency. Four elementary topics for this system were studied separately, and process evaluation was made based on the finding. The mass and energy flow is shown together with the experimental results of each study. Combination of reactors biomass feedstock can achieve effective process that cannot be achieved by single reactors. This research was performed by the Environment Research and Technology Development Fund (JPMEERF20203001) of the Environmental Restoration and Conservation Agency of Japan, and three year project finished last March. This is the presentation of the total achievement through the three year project.