지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2010.1
- 수록면
- 19 - 25 (7page)
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초록· 키워드
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In this study, continuous dry anaerobic co-digestion of livestock waste and food waste was performed under mesophilic condition. The entire operation was divided into five phases according to the change of hydraulic retention time (HRT) and livestock waste content. In order to investigate the inhibitory effect of ammonia, a batch test was conducted using the sludge taken at 40th day. As the sludge was not acclimated at high concentration of ammonia, it showed decreased biogas production as ammonia concentration increased. In continuous operation, however, by the stepwise increase of ammonia, the sludge could adapt to high concentration of ammonia. At Phase IV (HRT = 60 d and livestock content = 40%), although the total ammonia concentration reached 7,000 mg NH4-N/L, it showed high biogas production yield of 0.59 ± 0.03 m3/kg VS (Volatile Solids) and VS reduction of 71.5 ± 1.9%. And, based on COD input, CH4 production yield was 0.26 m3/kg CODadded, indicating that 76% of energy content in the substrate was converted to CH4. At Phase V, when the livestock content increased to 60%, there was a sharp decrease of biogas production, which was attributed to the increase of free ammonia concentration to over 1,000 mg NH3-N/L.
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