P6 超音波と短波長紫外光を用いた難分解性有機フッ素化合物の分解処理(ポスターセッション)

DOI

書誌事項

タイトル別名
  • P6 Degradation of persistent organic fluorine compound using ultrasonic irradiation and short-wavelength UV light(Poster Session)

抄録

Perfluoropolyether (PFPE) is the fluorinated organic synthetic oil which has been used as heat carrier and hydraulic oil for a vacuum pump used in the semiconductor clean room. This substance has extremely strong carbon-fluorine bonds in the internal structure, and these carbon-fluorine bonds give high resistance to heat and a chemical reaction. However, PFPE is harmful to a human body, and has high global warming potential. In this study, we investigated the effects of 50 and 200 kHz ultrasonication and short-wavelength UV irradiation on the degradation of PFPE and its decomposition intermediate products. As an intermediate product of PFPE, we chose pentafluoropropionic acid (PFPrA). 84.9% of PFPE was decomposed after 120 min by 200 kHz ultrasonic irradiation, and 48.6% of PFPrA was decomposed after 120 min by UV_<254+185> irradiation. From these results, it was confirmed that 200 kHz ultrasonic irradiation was more effective for hydrophobic perfluorochemicals like PFPE, and UV_<254+185> irradiation was more effective for hydrophilic perfluorochemicals like PFPrA which is one of the decomposition intermediates of PFPE.

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詳細情報 詳細情報について

  • CRID
    1390282681027872384
  • NII論文ID
    110010013673
  • DOI
    10.20577/pamjss.23.0_41
  • ISSN
    24241512
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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