에너지공학 (Journal of Energy Engineering)

  • 제24권4호
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  • Pages.11-17
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  • 2015
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  • 1598-7981(pISSN)
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  • 2713-7074(eISSN)
한국에너지학회 (The Korean Society for Energy)
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음폐수 산발효 조건에 따른 바이오가스 생산량에 관한 연구

A Study on Biogas Yield According to Food Waste Leachate Acid Fermentation Conditions

  • 문광석 (서울과학기술대학교 에너지환경대학원) ;
  • 박대원 (서울과학기술대학교 에너지환경대학원) ;
  • Moon, Kwangseok (Graduate School of energy and Environment, Seoul National University of Technology & Science) ;
  • Pak, Daewon (Graduate School of energy and Environment, Seoul National University of Technology & Science) ;
  • Kim, Jaehyung (Graduate School of energy and Environment, Seoul National University of Technology & Science)
  • 투고 : 2015.06.29
  • 심사 : 2015.11.03
  • 발행 : 2015.12.31
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초록

본 연구에서는 음식물류 폐기물 폐수(이하, 음폐수)를 이용하여 혐기성발효 시 부산물로 생성되는 메탄가스의 생산효율을 높이고자 산발효 전처리를 수행하였으며 전처리된 음폐수를 이용하여 BMP 실험을 통해 메탄생산량 증대를 위한 산발효 최적조건을 확인하고자 하였다. 산발효된 음폐수를 이용하여 BMP 실험을 진행한 결과 HRT 3일 조건에서 0.220 L/g VS의 가장 높은 메탄생산량을 확인하였으며, 초기 pH별 BMP실험에서는 pH 6에서 19,920 mg/L로 가장 높은 VFA와 Acetic acid/TVFA(76.2%)를 보였다. 이때 메탄생산은 약 10일 이내로 대부분 생산되어 일반적인 메탄발효(30일 이내)에 비해 약 1/3수준으로 단축됨을 확인하였다. 메탄생성량은 0.294 L/g VS로 대조군 대비 약 1.3배 높은 효율을 나타내었다.

This study performed acid fermentation pre-treatment to improve production efficiency of methane that is produced as a product in case of anaerobic fermentation by using food waste leachate, and attempted to confirm the acid fermentation optimum through the BMP test by using pre-treated food waste leachate to increase the yield of methane. As a result of the BMP experiment by using acid fermented food waste leachate, the highest yield of methane of 0.220 L/g VS was confirmed in the HRT three-day condition, and in the initial BMP test by pH, pH 6 was 19,920 mg/L that the highest VFA and acetic acid/TVFA(76.2%) were shown. At this time, it was confirmed that the yield of methane was mostly within 10 days that was reduced to around one-third compared to the general methane fermentation (within 30 days). As the yield of methane was 0.294 L/g VS, it showed a high efficiency of around 1.3 times compared to the control group.

키워드

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피인용 문헌

  1. Characteristics of Food Wastes and Its Hydrolysis Conditions vol.13, pp.1, 2017, https://doi.org/10.7849/ksnre.2017.3.13.1.036