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Investigation of geosmin removal efficiency by microorganism isolated from biological activated carbon

생물활성탄에서 분리한 미생물의 지오스민 제거효율 평가

  • Baek, Dawoon (Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University) ;
  • Lim, Jaewon (Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University) ;
  • Cho, Yoonjung (Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University) ;
  • Ahn, Yong-Tae (Department of Environmental Engineering, Yonsei University) ;
  • Lee, Hyeyoung (Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University) ;
  • Park, Donghee (Department of Environmental Engineering, Yonsei University) ;
  • Jung, Dongju (Department of Biomedical Laboratory Science, College of Natural Sciences, Hoseo University) ;
  • Kim, Tae-Ue (Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University)
  • 백다운 (연세대학교 보건과학대학 임상병리학과) ;
  • 임재원 (연세대학교 보건과학대학 임상병리학과) ;
  • 조윤정 (연세대학교 보건과학대학 임상병리학과) ;
  • 안용태 (연세대학교 보건과학대학 환경공학과) ;
  • 이혜영 (연세대학교 보건과학대학 임상병리학과) ;
  • 박동희 (연세대학교 보건과학대학 환경공학과) ;
  • 정동주 (호서대학교 자연과학대학 임상병리학과) ;
  • 김태우 (연세대학교 보건과학대학 임상병리학과)
  • Received : 2014.11.26
  • Accepted : 2015.02.02
  • Published : 2015.02.15

Abstract

Recently, the production of taste and odor (T&O) compounds is a common problem in water industry. Geosmin is one of the T&O components in drinking water. However, geosmin is hardly eliminated through the conventional water treatment systems. Among various advanced processes capable of removing geosmin, adsorption process using granular activated carbon (GAC) is the most commonly used process. As time passes, however GAC process changes into biological activated carbon (BAC) process. There is little information on the BAC process in the literature. In this study, we isolated and identified microorganisms existing within various BAC processes. The microbial concentrations of BAC processes examined were $3.5{\times}10^5$ colony forming units (CFU/g), $2.2{\times}10^6CFU/g$ and $7.0{\times}10^5CFU/g$ in the Seongnam plant, Goyang plant and Goryeong pilot plant, respectively. The dominant bacterial species were found to be Bradyrhizobium japonicum, Novosphingobium rosa and Afipia broomeae in each plants. Removal efficiencies of $3{\mu}g/L$ geosmin by the dominant species were 36.1%, 36.5% and 34.3% in mineral salts medium(MSM) where geosmin was a sole carbon source.

Keywords

References

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