서지주요정보
혐기성 소화 슬러지에서 황산염환원균과 메탄생성균의 상호관계 = Interactions between sulfate reducers and methanogens in anaerobic sludges
서명 / 저자 혐기성 소화 슬러지에서 황산염환원균과 메탄생성균의 상호관계 = Interactions between sulfate reducers and methanogens in anaerobic sludges / 나현준.
저자명 나현준 ; Na, Hyun-Joon
발행사항 [대전 : 한국과학기술원, 1995].
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소장정보

등록번호

8005140

소장위치/청구기호

학술문화관(문화관) 보존서고

MBT 95003

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초록정보

For the control and improvement of the anaerobic digestion processes, it is important to understand the microbial interactions related to the decomposition of organic matter in the anaerobic treatment processes. Methanogensis and sulfidogensis which are the terminal processes of anaerobic degradation of organic compounds have the potential importance in anaerobic waste treatments. The aims of the present study are estimation in situ of the utilization rates of sulfate reducers and methanogens and clarification of the interactions between these bacteria. In order to estimate availabilities of substrates for methanogens and sulfate reducers, chloroform and molybdate were used as specific inhibitors of each group of bacteria. It was shown that methanogens and sulfate reducers used about 70% and 30% of organic acids in anaerobic sludges respectively. Sulfate reducers improve the anaerobic environment for methanogenesis by supplying sulfide which rapidly decreased the oxidation-reduction potential. The effect of sulfate and sulfide on methanogensis were also studied. Under the concentration of 4mM sulfate and 2mM sulfide the methane producing activity was increased and sulfide production rate had the maximum value with 15mM sulfate. The investigation on physiological chracteristics of sulfate reducing bacteria was carried out by using pure culture method. Sulfate reducers which were cultured in liquid media with lactate as the carbon source used lactate by anaerobic respiration and fermentation of lactate into acetate. It is therefore evident that methanogens and sulfate reducing bacteria have complex relationship each other in the form of competition and syntrophism according to the substrates present in the anaerobic sludge.

서지기타정보

서지기타정보
청구기호 {MBT 95003
형태사항 vi, 55 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Hyun-Joon Na
지도교수의 한글표기 : 이성택
지도교수의 영문표기 : Sung-Taik Lee
학위논문 학위논문(석사) - 한국과학기술원 : 생물공학과,
서지주기 참고문헌 : p. 51-52
주제 Microbial metabolism.
Methanobacteriaceae.
슬러지. --과학기술용어시소러스
혐기적 대사. --과학기술용어시소러스
메탄 세균. --과학기술용어시소러스
Sewage sludge.
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