한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제20권5호
  • /
  • Pages.452-456
  • /
  • 2004
  • /
  • 2289-0971(pISSN)
  • /
  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
권호 표지

감마선을 이용한 테레프탈산과 에틸렌글리콜의 방사선처리

Radiation Treatment of Terephthalic Acid and Ethylene Glycol by using Gamma-rays

  • 이선미 (고려대학교 환경생태공학부) ;
  • 조훈제 (고려대학교 환경생태공학부) ;
  • 김정규 (고려대학교 환경생태공학부) ;
  • 정진호 (고려대학교 환경생태공학부)
  • Lee, Sun-Mi (Division of Environmental Science & Ecological Engineering, Korea University) ;
  • Jo, Hun-Je (Division of Environmental Science & Ecological Engineering, Korea University) ;
  • Kim, Jeong-Gyu (Division of Environmental Science & Ecological Engineering, Korea University) ;
  • Jung, Jinho (Division of Environmental Science & Ecological Engineering, Korea University)
  • 투고 : 2004.05.28
  • 심사 : 2004.08.09
  • 발행 : 2004.09.30
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초록

Gamma-rays effectively decomposed TPA and EG, thus removal of $1.0{\times}10^{-3}$ M pollutants was near 65 and 95%, respectively, at an absorbed dose of 10 kGy. However, TOC removal in the radiation treatment was less than 5% due to a low transformation of both TPA and EG to $CO_2$. For TPA, gamma-ray treatment largely reduced biodegradability($BOD_5/COD$) by degrading TPA to non-biodegradable organic acids. This implies that the change of biodegradability should be considered when the radiation treatment is combined with conventional biological techniques. A weight-loss wastewater containing TPA and EG was also purified by gamma-ray treatment. Extraordinarily, biodegradability of the wastewater was increased at a low dose of 1 kGy. Though underlying mechanism was not clearly identified, this result stresses the effect of wastewater composition and absorbed dose on the biodegradability change.

키워드

참고문헌

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