Biogas Production from Co-digestion Between Rice Straw and Food Waste with Pilot Scale

This study presents a pilot scale design for biogas production from the co-digestion of rice straw and food waste on a pilot scale, as well as the use of cow dung as microorganisms to determine the efficiency of the 3 m(3) pilot scale reactor. The operational of the pilot scale was referred to as laboratory conditions. In terms of a reactor in the laboratory scale was 10 L completely mixed. pH was operated within 6.0-7.5. The highest percentage of methane and cumulative methane production was 70.17% and 11,387.50 ml, respectively. The H-max, R-max and lambda were obtained 12,597.88 mL, 553.93 mL day(-1) and 6.53 day (R-2 = 0.98), respectively. In terms of the pilot scale 3 m(3) presented a percentage of CH4 55-56% during fermentation time. Biogas production from the pilot scale was presented at 1.604-2.157 m(3). The H-max and R-max were obtained at 16.95 m(3) and 0.32 m(3) day(-1) (R-2 = 0.99), respectively. Then, the calculation of GHG reduction was presented GHG baseline and project. The GHG reduction in this research was 18.33 kgCO(2)eq. The pilot scale biogas digester is useful food waste, rice straw, and cow dung management tool for global warming reduction. This research provides a small-scale biogas production that is useful for food waste, rice straw, and cow dung management tools for reducing global warming impacts. Finally, this research can be carried out towards to the sustainable development goals (SDGs) 12.4, reducing waste through the reuse and recycle process, and SDGs 7 ensuring everyone can access affordable sustainable energy.

Automated summary

This study presents a pilot scale design for biogas production from the co-digestion of rice straw and food waste using cow dung as microorganisms. The highest percentage of methane and cumulative methane production in the laboratory scale reactor were 70.17% and 11,387.50 ml, respectively. In the 3 m(3) pilot scale reactor, the percentage of CH4 during fermentation time was 55-56%. The calculated GHG reduction in this research was 18.33 kgCO(2)eq.