유기물자원화 (Journal of the Korea Organic Resources Recycling Association)

  • 제21권1호
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  • Pages.62-68
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  • 2013
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  • 1225-6498(pISSN)
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  • 2508-3015(eISSN)
유기성자원학회 (Korea Organic Resources Recycling Association)
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매몰지 내 유기물 농도가 분해 속도에 미치는 영향

Effect of organic concentration on its degradation kinetics in a burial site

  • 이채영 (수원대학교 토목공학과) ;
  • 최재민 (수원대학교 토목공학과) ;
  • 오승준 (수원대학교 토목공학과) ;
  • 한선기 (한국방송통신대학교 환경보건학과) ;
  • 박준규 ((주)다산컨설턴트 기술연구소)
  • Lee, Chae-Young (Department of Civil Engineering, The University of Suwon) ;
  • Choi, Jae-Min (Department of Civil Engineering, The University of Suwon) ;
  • Oh, Seung-Jun (Department of Civil Engineering, The University of Suwon) ;
  • Han, Sun-Kee (Department of Environmental and Health, Korea National Open University) ;
  • Park, Joon-Kyu (Dasan consultants, R&D center)
  • 발행 : 2013.03.30
⟨ 이전 논문 다음 논문 ⟩

초록

회분식 실험을 통해 매몰지 내 유기물의 농도가 분해 속도에 미치는 영향을 평가하였다. 기질은 돈 및 우육을 이용하였으며 기질의 농도는 2, 4, 6, 8 및 10 g VS/L로 선정하였다. 기질의 농도가 2 g VS/L 일 경우에 돈 및 우육의 메탄 발생율 각각 46.3 및 48.4 ml CH4/g VS.d 로 가장 높게 나타났으며 기질의 농도가 증가할수록 메탄 발생율은 감소하였다. 비선형 저해 방정식을 이용하여 평가된 저해 상수 값은 돈육의 경우, n 및 m은 각각 4.9 및 0.6으로 나타났으며 우육은 각각 1.1 및 0.4로 나타났다(n: 최대 메탄 발생율 저해 상수, m: 최종 메탄 수율 저해 상수). 기질의 농도가 증가할수록 메탄 발생율은 민감하게 반응하였으나 최종 메탄 수율은 상대적으로 둔감하게 반응하였다. 또한, 돈 및 우육의 n과 m 값 관계를 통해 기질 농도에 따른 저해 특성은 반경쟁적 저해 특성으로 판단된다.

The effect of organic substance on its degradation rate in burial site was investigated using batch tests. Substrate were swine and cattle with the initial concentrations of 2, 4, 6, 8, and 10 g VS(volatile solids)/L, respectively. The highest methane production rates of swine and cattle were found at 2 g VS/L as 46.3 and 48.4 ml CH4/g VS.d, respectively. As substrate concentration increased, the methane production rate decreased. The inhibition constants were n and m that were estimated using nonlinear inhibition model. The values of n and m were inhibition constants of methane production rate and ultimate methane yield, respectively. The values of n and m were 4.9 and 0.6 on swine and 1.1 and 0.4 on cattle. The methane production rate was responded sensitively by increase and decrease of substrate concentration, whereas ultimate methane yield do not relatively. From a relation between n and m, inhibitory effect of substrate concentration was confirmed as uncompetitive inhibition.

키워드

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