Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Improvement of the Biodegradability of Polyvinyl Alcohol by Radiation Treatment

방사선 처리에 의한 폴리비닐 알콜의 생분해도 개선

  • Jung, Jinho (Division of Environmental Science & Ecological Engineering, Korea University) ;
  • Park, Nam-Young (Division of Environmental Science & Ecological Engineering, Korea University) ;
  • Jo, Hun-Je (Division of Environmental Science & Ecological Engineering, Korea University) ;
  • Lee, Sun-Mi (Division of Environmental Science & Ecological Engineering, Korea University) ;
  • Kim, Jeong-Gyu (Division of Environmental Science & Ecological Engineering, Korea University)
  • 정진호 (고려대학교 환경생태공학부) ;
  • 박남용 (고려대학교 환경생태공학부) ;
  • 조훈제 (고려대학교 환경생태공학부) ;
  • 이선미 (고려대학교 환경생태공학부) ;
  • 김정규 (고려대학교 환경생태공학부)
  • Received : 2004.01.30
  • Accepted : 2004.03.09
  • Published : 2004.05.30
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Abstract

Radiation treatment with gamma-rays and electron-beams was used to remove polyvinyl alcohol(PVA), one of the main components of dyeing wastewater. PVA was effectively decomposed by radiation treatment, thus the removal was near 100 % at an initial PVA concentration of 44 mg/L. However, total organic carbon(TOC) removal was less than 5 % due to lower transformation of PVA to $CO_2$. This directly indicates the radiation treatment alone is not appropriate for the complete decomposition of PVA. In this sense, the improvement of biodegradability($BOD_5/COD$) of PVA by radiation treatment was studied. Both gamma-ray and electron-beam treatments significantly increased the biodegradability of PVA by transforming non-biodegradable PVA to biodegradable by-products. This suggests radiation treatment, especially electron-beam treatment that showed better improvement of biodegradability, can be used as a pre-treatment of biological degradation process of PVA.

Keywords

References

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