음식물쓰레기와 폐활성 슬러지를 이용한 생물학적 수소생산

  • 상병인 (한국과학기술연구원 수질환경및복원연구센터) ;
  • 이윤지 (한국과학기술연구원 수질환경및복원연구센터) ;
  • 김동임 (한국과학기술연구원 수질환경및복원연구센터) ;
  • 김동건 (한국과학기술연구원 수질환경및복원연구센터) ;
  • 김지성 (한국과학기술연구원 수질환경및복원연구센터) ;
  • 유명진 (서울시립대학교 환경공학과) ;
  • 박대원 (서울산업대학교 에너지환경대학원)
  • Published : 2005.11.11

Abstract

Anaerobic fermentation of food waste (FW) and waste activated sludge (WAS) for hydrogen production was performed in CSTR (Continuous Stirred tank reactor) under various HRTs and volumetric mixing ratio (V/V) of two substrates, FW and WAS. The specific hydrogen production potential of FW was higher than that of WAS. However, pH drop in the CSTR for hydrogen production from FW was higher than that from WAS. The maintenance of desired pH during fermentative hydrogen production is regarded as the most important operation parameter for the stable hydrogen production. Therefore, when the potential of hydrogen production from FW and better buffer capacity of WAS, the proper mixture of FW and WAS for fermentative hydrogen production were considered as a useful complementary substrate. The maximum yield of specific hydrogen production, 140 mL/g VSS, was found at HRT of 2 day and the volumetric mixing ratio of 20:80 (WAS : FW). The spatial distribution of hydrogen producing bacteria was observed in anaerobic fermentative reactor using fluorescent in situ hybridization (FISH) method.

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