| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Research Abstract |
We proposed a flow type reactor for IPA degradation in water phase using ozone microbubbles (O3MB) and TiO2 photocatalyst fixed on nonwoven fabric. It was confirmed that decomposition rate of IPA improved by addition of O3MB and the mineralization rate was promoted by TiO2 photocatalyst. As the further research, the optimal condition of the IPA decomposition by O3MB, nonwoven fabric support TiO2, and H2O2 was investigated using a batch type reactor in order to improve the IPA degradation. The influences on IPA degradation, such as the material or shape of nonwoven fabric and molar ratio of H2O2/O3 with or without UV irradiation, were confirmed and the optimal condition was decided in consideration with O3 concentration because it acts as OH radical scavenger. In this process, it was confirmed that OH radicals were main active species, and contributed to improvement in the decomposition rate of IPA and the mineralization rate of its decomposition intermediates.
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