대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제35권1호
  • /
  • Pages.10-16
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  • 2013
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  • 1225-5025(pISSN)
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  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
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산·알칼리 전처리를 통한 제당 폐수의 생물학적 수소생산

Biological Hydrogen Production By Pre-treatment of Sugar Wastewater Using Acidic or Alkaline Chemicals

  • 이태진 (서울과학기술대학교 환경공학과)
  • Lee, Tae-Jin (Department of Environmental Engineering, Seoul National University of Science & Technology)
  • 투고 : 2012.10.25
  • 심사 : 2012.12.01
  • 발행 : 2013.01.30
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초록

제당폐수를 산 또는 알카리 전 처리한 후 생물학적 수소생산율과 유기산의 생성특성을 평가하였다. 제당 폐수의 수소발생량은 산 전처리된 경우 보다 알칼리 전처리된 시료에서 약 70%의 발생량 증가를 나타내었다. 또한 제당폐수 원액에 적절한 영양염류(질소 인)를 공급하였을 때 보다 양호한 수소생성률을 보여주었다. 제당폐수의 혐기발효에 있어서 탄수화물의 분해와 수소생성의 직접적인 연관성은 나타나지 않았다. Butyric acid/Acetic acid (B/A)비와 수소생산의 연관성을 살펴보았을 때, 영양염류를 첨가한 제당폐수는 순수 제당폐수보다 B/A비가 약 3배 증가하였으며 알카리 전처리와 영양염류를 첨가한 시료에서 B/A비가 4.02로 가장 높게 나타났다. 실험에 사용된 전체 시료에서 B/A비가 클수록 수소생성률이 높았다.

Characteristics of biological hydrogen production rate and organic acid under anaerobic fermentation process were investigated with sugar wastewater. Hydrogen production rate was higher with alkaline pre-treatment than acidic pre-treatment, resulting in 70% increment. An adequate supply of the nutrients (N or P) into raw sugar wastewater could increase hydrogen production rate. Carbohydrate degradation of the anaerobic fermentation process was not directly related with hydrogen production. Sugar wastewater with the addition of the nutrients shows 3 times higher B/A ratio than the raw sugar wastewater. B/A ratio of the wastewater with alkaline pre-treatment and nutrients addition was most higher than other samples, showing 4.02 of B/A ratio. Higher B/A ratio shows higher hydrogen production rate at each sample.

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