Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Characteristics of Anaerobic Degradation on Dewatered Liquid of Household Food Waste.

음식물쓰레기 탈수액의 혐기성 생분해 특성

  • Kim, Woo-Sung (Dept. of Environmental Engineering, College of Engineering, Changwon National University) ;
  • Seo, Jeoung-Yoon (Dept. of Environmental Engineering, College of Engineering, Changwon National University) ;
  • Lee, Young-Hyeong (Dept. of Environmental Engineering, College of Engineering, Dong-A University)
  • 김우성 (창원대학교 공과대학 환경공학과) ;
  • 서정윤 (창원대학교 공과대학 환경공학과) ;
  • 이영형 (동아대학교 공과대학 환경공학과)
  • Published : 1998.09.30
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Abstract

Anaerobic degradation characteristics of dewatered liquid of household food waste including methane conversion efficiency and degradation kinetics were studied in an anaerobic batch reactor of 5 L volume. The ultimate methane production for dewatered liquid of household food waste tested was over 0.31L $CH_4/L{\cdot}dewatered$ liquid of household food waste. The kinetic constant of dewatered liquid of household food waste tested was $0.223d^{-1}/L$. The kinetic behavior of anaerobic degradation was described as a first order series reaction. The determinant of rate-limiting step(DR) that is balanced out from the rates of reaction steps was defined by the logarithmic difference of the maximum acidification rate and the maximum methanation rate. Anaerobic degradation characteristics of organic materials were evaluated by the value of DR. The DR of dewatered liquid of household food waste tested was 1.17.

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