Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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The Effects of Cadmium or Copper on Biological Hydrogen Production

생물학적 수소생산에 구리와 카드뮴이 미치는 영향에 관한 연구

  • Yoon, Woo-Hyun (Department of Environmental Engineering, Seoul National University of Technology) ;
  • Lee, Tae-Jin (Department of Environmental Engineering, Seoul National University of Technology)
  • 윤우현 (서울산업대학교 환경공학과) ;
  • 이태진 (서울산업대학교 환경공학과)
  • Published : 2005.09.30
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Abstract

Experiment was conducted to investigate the amount of hydrogen gas and the characteristics of organic acids production from various carbohydrates by anaerobic bacteria. The variation characteristics of organic acids and hydrogen gas production at the fermentative culture were also studied in the presence of heavy metals such as cadmium or lopper. 3.43 mole hydrogen per mole of hexose was produced when sucrose was used as a carbon source. Acetic acid and butyric acid were main products by the anaerobic fermentation. Hydrogen production rate was decreased and formation of acetic acid was increased as the concentration of heavy metals was increased in the medium. The inhibition of hydrogen production by the copper was more serious than the cadmium.

혐기성균에 의해 각종 탄수화물로부터 생성되는 수소가스의 량을 측정하였으며, 이 때 생성되는 유기산의 생성 특성을 파악하고자 하였다. 또한 이를 기초로 카드뮴과 구리와 같은 중금속이 배양액에 존재할 경우 혐기성균에 의한 수소생산량과 발효산물의 변화양상을 파악하고자 하였다. sucrose가 탄소원으로 사용되었을 때 3.43 mol H2/mol hexose의 최적 수소 생산량을 보였으며, 발효산물인 유기산은 acetic acid와 butyric acid가 주로 생성되었다. 카드뮴과 구리가 배양액에 존재함에 따라 수소생산량이 낮아지는 경향을 보인 반면, 유기산 중에서 acetic acid의 생성이 높아지는 경향을 나타내었으며 수소생산에 미치는 영향은 구리가 더 큰 것으로 나타났다.

Keywords

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