논문 상세보기
pp.209-219
In this study, we analyzed the changes in concentrations of volatile fatty acids (VFA), phenols, and indoles, as well as odor contribution in pig slurry. The pig slurry was stored for approximately two months after the manure excretion of pigs which had been fed 3% level of peat moss additive. The investigation was carried out through lab-scale experiments simulating slurry pit conditions within pig house. Throughout the storage period, the concentration of VFA exhibited a tendency to be 11%-32% higher in the pig manure treated with peat moss as compared to the control group. From a concentration perspective, phenol and acetic acid accounted for the majority of the total odor compounds produced during the pig slurry storage period. However, their significance diminished when the concentration of odoros compounds are converted into odor activity value and odor contribution. Despite the odor reduction effect of the ammonia (NH3) adsorption by peat moss, if it cannot effectively reduce the high odor-contributing compounds such as indoles and p-cresol, the sole use of peat moss may not be considered an effective means of mitigating odors produced by pig slurry. According to this study, indoles, p-cresol, skatole, and valeric acid were consistently revealed as major odor-contributing substances during the two-month storage of pig slurry. Therefore, a comprehensive odor mitigation methodology should be proposed, taking into consideration the odor generation characteristics (including temporal concentration and odor contribution) of pig slurry-derived odors during storage.
2. 재료 및 방법
2.1 돈분뇨 채취 및 분석
2.2 슬러리피트 모의실험 설계
2.3 악취화합물 농도 분석
2.4 악취화합물 악취활동도 및 기여도 분석
2.5 통계 분석
3. 결과 및 고찰
3.1 돈슬러리 2개월 저장 후 이화학적 변화
3.2 공기 중 악취화합물(VFA, phenols, indoles) 농도결과
3.3 공기 중 악취화합물(VFA, phenols, indoles)의 악취활동도(OAV) 및 기여도(%) 결과
4. 결 론
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