Development and systematization of the effective photocatalysis method in liquid phase using UV light and ozone
| Project/Area Number |
23510090
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Environmental technology/Environmental materials
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| Research Institution | Saitama University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| 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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| Keywords | 2-プロパノール / 不織布担持光触媒 / オゾンマイクロバブル / 過酸化水素 / 紫外線 / 分解速度 / 無機化速度 / 分解生成物 / 不織布型光触媒 / エタノール / 光運搬 / 無機化 / 全有機炭素 / 光触媒 / オゾン / マイクロバブル |
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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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Report
(4 results)
Research Products
(38 results)
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[Presentation] Complete decomposition of water-soluble VOC using ozone microbubbles and TiO_2 photocatalyst immobilized on a nonwoven fabric2012
Author(s)
Sekiguchi, K., Yoshida, T., Wang, Q., Kim, K. H., Yasui, F., Tamura, H., Kawasaki, T. and Matsubayashi, Y
Organizer
Proceedings of the 21th International Symposium on Contamination Control
Place of Presentation
チューリッヒ(スイス)
Year and Date
2012-09-05
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