Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Nitrate Removal by Immobilized Denitrifying Bacteria in Recirculating Aquaculture System

순환여과식 양식 시스템에 있어서의 고정화 탈진균에 의한 질산염 제거

  • 김상희 (부경대학교 식품생명공학부 생물공학전공) ;
  • 김필균 (부경대학교 식품생명공학부 생물공학전공) ;
  • 김중균 (부경대학교 식품생명공학부생물공학전공)
  • Published : 1999.12.01
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Abstract

For the nitrate removal in recirculating aquaculture system, a denitrifying bacterium, Pseudomonas fluorescens, was isolated from municipal sewage and the cells were immobilized in modified-polyvinly alchol (PVA) gel beads. The immobilized cells in both the fixed-and fluidized-bed reactors showed 98% of denitrification efficiency with 6hr HRT, and the removal efficiency of total organic carbon (TOC) was above 90%. Form scanning electron microscopy (SEM) observation, it was known that biofilm formed in fixed-bed reactor was thicker than that formed in fluidized-bed reactor as operation time passed.

Keywords

References

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