太陽光によるビスフェノールAの分解

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タイトル別名
  • Photo Catalytic Degradation of Bisphenol A under Solar Exposure
  • タイヨウコウ ニ ヨル ビスフェノール A ノ ブンカイ

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Photo catalytic oxidation of endocrine disruptor bisphenol A (BPA) was carried out under solar exposure with two types of reactor, non-light concentrating cylindrical photoreactor and concentrating one. The non-concentrating cylindrical reactor exhibited a higher apparent quantum yield than the solar-light concentrating one. The low degradation efficiency of the concentrating system could be highly attributable to that the reactor can employ only direct solar radiation, conversely to the non-concentrating reactor which employs both direct and diffuse radiation. The photo-oxidation of BPA was depressed under the strong illumination condition provided by the concentrating system, due to an enhanced hole/e- recombination. The optimal conditions to decompose BPA (0.1mM, 15L) were pursued. The aromatic ring cleavage occurred in a 90 % yield and the TOC decrease proceeds in a 95% yield after 90 min of irradiation under the optimal conditions (cylindrical photo reactor, flow rate: 7.2L/min TiO2: 2g/L, initial pH: 6.8) to decompose BPA (0.1mmol/L, 15L).

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