대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제29권7호
  • /
  • Pages.839-845
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  • 2007
  • /
  • 1225-5025(pISSN)
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  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
권호 표지

혐기성소화의 산발효과정에 있어서 동역학정수의 온도의존성

Temperature Dependence of the Kinetic Constants in Acidogenesis Process of Anaerobic Digestion

  • 차기철 (연세대학교 환경공학부, 환경과학기술연구소) ;
  • 정태영 (연세대학교 환경공학부, 환경과학기술연구소) ;
  • 유익근 (울산대학교 생명화학공학부) ;
  • 김동진 (한림대학교 환경시스템공학과)
  • Cha, Gi-Cheol (Department of Environmental Engineering, YIEST, Yonsei University) ;
  • Jeong, Tae-Young (Department of Environmental Engineering, YIEST, Yonsei University) ;
  • Yoo, Ik-Keun (School of Chemical Engineering & Bioengineering, University of Ulsan) ;
  • Kim, Dong-Jin (Department of Environmental System Engineering, Hallym University)
  • 발행 : 2007.07.31
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초록

용해성 glucose를 기질로 하여 혐기성 산발효조에서 동역학정수에 대한 온도의존성을 검토하였다. 온도범위는 $15^{\circ}C$에서 $30^{\circ}C$이며, 포화정수$(K_s\upsilon)$와 증식수율(Y)은 온도의 상승에 따라 감소하였지만, 최대비기질소비속도$(\upsilon_{max})$는 증가하였다. 기질소비속도와 균체 증식속도의 온도보정인자$(Q_{10})$ 값은 각각 1.3에서 2.2, 1.5에서 2.2의 범위를 보였다. 최대비기질소비속도$(\upsilon_{max})$가 증식수율(Y) 보다 온도의 변화에 대하여 더 민감하였다. $20^{\circ}C$에서 $30^{\circ}C$까지의 온도영역에서 체류시간과 기질농도의 관계에 대한 시물레이션 모델은 $1/SRT={(6.53){\cdot}(1.038)^{T-20}{\cdot}(S/X)}/{(1.38){\cdot}(0.983)^{T-20}+(S/X)}$이다.

Temperature dependence of kinetic constants in the anaerobic acidogenesis was investigated using anaerobic chemostat-type reactor. Glucose was used as a substrate in this experiment. Temperature ranging from 15 to $30^{\circ}C$ were studied. The saturation constant$(k_s\upsilon)$ and growth yield(Y) decreased with increasing temperature, while the maximum specific substrate utilization rate$(\upsilon_{max})$ increased. A temperature correction factor$(Q_{10})$ values of the substrate utilization rate and bacteria growth rate were the range from 1.3 to 2.2 and 1.5 to 2.2, respectively. The growth yield(Y) for the acidogenesis process was less sensitive to temperature changes than the maximum specific substrate utilization rate$(\upsilon_{max})$. The simulation model of the relationship between the substrate and sludge retention time(SRT) at the temperature range of 20 to $30^{\circ}C$ is obtained as the following ; $1/SRT={(6.53){\cdot}(1.038)^{T-20}{\cdot}(S/X)}/{(1.38){\cdot}(0.983)^{T-20}+(S/X)}$.

키워드

참고문헌

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