한국생물공학회:학술대회논문집

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Inhibition of methane formation and improvement of $H_2$ production by adding nitrate to anaerobic reactor

  • Kim, Jeong-Ok (Korea Research Institute of Chemical Technology(KRICT), Department of Chemical Engineering, Chungnam National University) ;
  • Kim, Yong-Hwan (Korea Research Institute of Chemical Technology(KRICT)) ;
  • Ryu, Jeong-Yong (Korea Research Institute of Chemical Technology(KRICT)) ;
  • Song, Bong-Keun (Korea Research Institute of Chemical Technology(KRICT)) ;
  • Kim, In-Ho (Department of Chemical Engineering, Chungnam National University)
  • Published : 2003.10.22
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Abstract

Anaerobic hydrogen production was executed using mixed anaerobic sludge. pH control (pH $5.5^{\sim}6.2)$ and heat treatment of anaerobic sluge at $92^{\circ}C$ was not effective for repressing the methane formation. The addition of $nitrate(500^{\sim}2,000\;mg/L\;KNO_3)$ made it possible to repress the methane formation, which resulted in the improvement of hydrogen production. By using SEM(Scanning Electron Microscope), less methane forming microbial with spagetti shape was observed when nitrate was supplied to anaerobic reactor.

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