돼지 사체의 혐기적 고온 매몰퇴비화법에서의 악취발생 특성과 세균군집구조의 상관성 분석

초록

In this study, the behavior of dominant microbial communities was investigated in the treatment of porcinecarcasses using an anaerobic high temperature burial composting method. The correlation between odor emissionand bacterial community structure was analyzed through principal component analysis and extended local similarityanalysis. In the burial layer of porcine carcass, the dominant bacteria were Bacillaceae (46%), Thermoactinomycetaceae(15%) and Lactobacillaceae (4%) in the early stage and Bacillaceae (46%), Thermoactinomycetaceae (15%),Lactobacillaceae (4%) in the end. Clostridiaceae (CH3SH), Bacillacea ((CH3)2S2), Clostridium ((CH3)2S2),Clostridial (H2S), Oceanobacillus (H2S), and Thermoanaerobacteraceae (H2S) were closely related to the sulfurousodorants, which are the highest odor contributions. The emission of sulfurous odor substances such as H2S, CH3SH,(CH3)2S, and (CH3)2S2 showed a positive correlation with each other, but showed a negative correlation withnitrogenous odorants (NH3 and TMA), aldehydes, organic acids, and VOCs. The results of this correlation analysiscan provide useful information that enables us to understand the characteristics of microbial communities and odorgeneration during the degradation of carcasses and to manage odors and burial sites in the treatment of carcass.

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