A Study on the Degradation of PAH in Organic and Aqueous Phases by Ozone

다환방향족탄화수소에 대한 오존처리의 방법에 관한 연구

  • Choi, Young Ik (Department of Environmental Engineering, Silla University) ;
  • Son, Hee-Jong (Water Quality Research Institute, Waterworks Headquarter) ;
  • Jung, Chul-Woo (Department of Environmental Engineering, Silla University)
  • 최영익 (신라대학교 환경공학과) ;
  • 손희종 (부산광역시 상수도사업본부 수질연구소) ;
  • 정철우 (울산산업진흥TP 전략산업기획단)
  • Received : 2006.08.10
  • Accepted : 2006.10.23
  • Published : 2006.11.30

Abstract

Pyrene of natural and anthropogenic sources is one of the toxic, mutagenic polycyclic aromatic hydrocarbons (PAHs) listed as priority pollutants. The objectives of this research are to break down pyrene by using ozonation, identify the intermediates and byproducts of pyrene, and test the biodegradability of intermediates and byproducts of pyrene in the aqueous phase. Since pyrene is non-polar, hexane was chosen as a solvent to effectively dissolve pyrene. Pyrene solutions were treated with ozone, as it has high oxidation capacity and electrophilic characteristic. After different ozonation pretreatment times (2, 3, and 10 minutes), intermediates of pyrene in the form of yellowish solid were collected from the hexane solution using a centrifuge. They were identified by gas chromatography/mass spectrometer (GC/MS). $BOD_5$, COD, and E-coli toxicity tests have been performed to assess the ozonation products.

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