KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Investigation on the Cause of Malodor through the Reproduction of Chemicals

화학물질의 재현을 통한 악취발생원인 규명

  • Park, Sang Jun (Department of Chemical Engineering, University of Seoul) ;
  • Oh, Young Hwan (Environment & Assessment Team, FITI Testing & Research Institute) ;
  • Jo, Bo Yeon (Environment & Assessment Team, FITI Testing & Research Institute) ;
  • Lee, Jae Shin (Environment & Assessment Team, FITI Testing & Research Institute) ;
  • Kim, Eui Yong (Department of Chemical Engineering, University of Seoul)
  • 박상준 (서울시립대학교 화학공학과) ;
  • 오영환 (FITI시험연구원 환경바이오평가팀) ;
  • 조보연 (FITI시험연구원 환경바이오평가팀) ;
  • 이재신 (FITI시험연구원 환경바이오평가팀) ;
  • 김의용 (서울시립대학교 화학공학과)
  • Received : 2014.09.11
  • Accepted : 2014.10.24
  • Published : 2014.10.30
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Abstract

It was confirmed that malodor connected with an air-conditioner in an automobile is caused by microbial volatile organic compounds (MVOCs) produced by microorganisms and through microorganisms coexisting with each other to form a biofilm on the evaporator surface. A bacterium, Methylobacterium aquaticum, can form a biofilm on the evaporator surface. The biofilm was composed of 45.79% C (Carbon), 42.36% O (Oxygen), 1.85% Na (Sodium), 5.42% Al (Aluminum), 1.39% P (Phosphorus), 0.74% Cl (Chlorine) and 2.45% K (Potassium). This result matches the composition of the biofilm formed on the surface of the used evaporator. It was determined that sulfur compounds (Hydrogen sulfide, Dimethyl sulfide) and organic acids (n-Butyric acid, n-Valeric acid, iso-Valeric acid) in the air which was blown into the automobile were generated by Methylobacterium aquaticum and Aspergillus versicolor, respectively. On the other hand, volatile organic compounds (Toluene, Xylene, 2-Ethylhexanol, 2-Phenyl- 2-propanol, Ethylbenzene) were not found. It is estimated that the reason is due to the low concentration of generated MVOCs or is caused by the change of some MVOCs depending on the nutrients (medium).

Keywords

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