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김재경 ( Jae Gyeong Kim ),허정민 ( Jeong Min Heo ),조흠 ( Xin Zhao ),홍진경 ( Jin-kyung Hong ),조은혜 ( Eun Hea Jho ) 한국환경농학회 2023 한국환경농학회지 Vol.42 No.4
본 연구에서는 볏짚과 토마토와 같은 농업부산물이 우분의 혐기성 소화를 통한 메탄 생성에 미치는 영향을 알아보기 위해 각 기질을 단독 소화한 것과 혼합 소화한 것을 비교하였다. 우분의 경우 토마토와 병합 소화했을 때 우분 단독 소화 시보다 메탄 생성량이 증가하였고, 혼합 기질 내 토마토 함량이 중요한 역할을 하였다. 본 연구를 통해 농업부산물을 활용한 분뇨의 바이오가스화 향상 가능성을 확인하였다. Large amounts of organic wastes generated in agricultural environments such as crop residues and livestock manure adversely affect the environment. Anaerobic digestion can reduce the amount of organic wastes and convert them into energy at the same time. Efforts are being made to further increase the energy conversion efficiency by using co-anaerobic digestion using two or more substrates. Tomatoes, rice straw, cattle manure, and cattle feces (CF) were used as substrates for anaerobic digestion. Each substrate was subjected to anaerobic digestion and the cumulative biochemical methane production potential was measured, and the biodegradability was calculated. Based on the methane production, CF and tomato were further used for co-anaerobic digestion at different mixing ratios. Among the CF:tomato ratios of 1:1, 1:2, and 2:1, 1:2 produced the most methane and the synergy index was greater 1 indicating that the co-digestion of CF and tomato improved the methane production. Overall, the results showed that the methane production from cattle manure can be improved using tomato residues.