Earticle

초록

영어

Effect of nitrogen-load condition on hydrogen (H2) production and bacterial community in a continuous anaerobic hydrogen fermentation were investigated. The slight H2 production on extremely low nitrogen-load condition (C/N ratio: 180) at the start-up period. The highest H2 production was obtained when the C/N ratio was 36, the H2 production yield (mol-H2 / mol-glucose) reached to 1.7, and it was indicated that Clostridium pasteurianum mainly contributed to the H2 production. The H2 production was decreased on both the lower (C/N: 72) and higher (C/N: 18) nitrogen-load conditions. The excess nitrogen-load was not always suitable for the
hydrogen production. The fluctuation of H2 production seemed to be caused by a change in the bacterial community according to the nitrogen-load condition, while a recovery of H2 productivity was possible by a control of nitrogen-load condition through the bacterial community change. When the nitrogen-load condition was not suitable for hydrogen production, the lactic acid concentration was increased and also lactic acid bacteria were definitely detected, which suggested that the competition between hydrogen fermentator and lactic acid producer was occurred. These results demonstrated that the nitrogen-load condition affect on the H2 productivity through the change of bacterial community in anaerobic hydrogen fermentation.

목차

Abstract
 Introduction
 Materials and Methods
  Inoculum and medium
  Continuous H2 fermentation on various nitrogen-load conditions
  Analysis
  PCR-DGGE
 Results and Discussion
  Start up of continuous hydrogen fermentation on low nitrogen-load condition
  Effect of low nitrogen-load on continuous hydrogen fermentation and bacterial community
  Effect of high nitrogen-load on continuous hydrogen fermentation and bacterial community
 Conclusions
 References

키워드

저자

• Yasunori Kawagoshi [ Graduate School of Science & Technology, Kumamoto University ] Corresponding author
• Masaharu Nakao [ Graduate School of Science & Technology, Kumamoto University ]
• Naoe Hino [ Graduate School of Science & Technology, Kumamoto University ]
• Tomonori Iwasa [ Graduate School of Science & Technology, Kumamoto University ]
• Kenji Furukawa [ Graduate School of Science & Technology, Kumamoto University ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국습지학회지 [韓國濕地學會誌]

• 간기

  계간

• pISSN

  1229-6031

• eISSN

  2384-0056

• 수록기간

  1999~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 472 DDC 570