우분과 볏짚의 병합 혐기성 소화를 통한 메탄 생산에 대한 고찰 (Effect of Rice Straw on Methane Production Potential of Cow Manure)

서지정보

· 발행기관 : 한국환경농학회
· 수록지 정보 : 한국환경농학회지 / 41권 / 2호 / 71 ~ 81페이지
· 저자명 : 박소윤, 장정아, 조흠, 홍진경, 조은혜

초록

BACKGROUND: Animal manures are one of the biggest sources of greenhouse gases and improper manage-ment of animal wastes contributes to the increasing greenhouse gases in the atmosphere. Con-verting greenhouse gases generated from animal manures to energy is one way of contributing to the net-zero carbon emissions. METHODS AND RESULTS: The potential for methane production from cow manure (CM) was studied by meas-uring the methane yield using the biochemical methane potential (BMP) test. In particular, the effect of co-diges-tion using rice straw (RM) on the methane production was studied. The methane yields from the co-digestion of CM and RS were statistically similar to that from the mono-di-gestion of CM or RS. But there was a synergy effect at the CM:RS ratio of 1:2 and 1:1. This can be attributed to the increased C/N ratio. The changed microbial community structure with the addition of substrates (CM, RS) prob-ably led to the increase in the methane produc-tion. CONCLUSION(S): The methane production potential of the particular CM used in this study was not improved by the addition of RS as a co-substrate. The addition of sub-strates to the anaerobic sludge promoted the increase in the microbial species having synergetic relationship with methano-gens, and this can partially explain the increase in the methane production with the addition of substrates. Overall, there are needs for further studies to improve the methane yield from CM.

영어초록

BACKGROUND: Animal manures are one of the biggest sources of greenhouse gases and improper manage-ment of animal wastes contributes to the increasing greenhouse gases in the atmosphere. Con-verting greenhouse gases generated from animal manures to energy is one way of contributing to the net-zero carbon emissions. METHODS AND RESULTS: The potential for methane production from cow manure (CM) was studied by meas-uring the methane yield using the biochemical methane potential (BMP) test. In particular, the effect of co-diges-tion using rice straw (RM) on the methane production was studied. The methane yields from the co-digestion of CM and RS were statistically similar to that from the mono-di-gestion of CM or RS. But there was a synergy effect at the CM:RS ratio of 1:2 and 1:1. This can be attributed to the increased C/N ratio. The changed microbial community structure with the addition of substrates (CM, RS) prob-ably led to the increase in the methane produc-tion. CONCLUSION(S): The methane production potential of the particular CM used in this study was not improved by the addition of RS as a co-substrate. The addition of sub-strates to the anaerobic sludge promoted the increase in the microbial species having synergetic relationship with methano-gens, and this can partially explain the increase in the methane production with the addition of substrates. Overall, there are needs for further studies to improve the methane yield from CM.

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