| Project/Area Number |
23246032
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TANAKA Yasunori 金沢大学, 電子情報学系, 教授 (90303263)
TAKANA Hidemasa 東北大学, 流体科学研究所, 准教授 (40375118)
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| Co-Investigator(Renkei-kenkyūsha) |
YASUOKA Koichi 東京工業大学, 理工学研究科, 教授 (00272675)
TAKEUCHI Nozomi 東京工業大学, 理工学研究科, 助教 (80467018)
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| Project Period (FY) |
2011-11-18 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥23,790,000 (Direct Cost: ¥18,300,000、Indirect Cost: ¥5,490,000)
Fiscal Year 2013: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2012: ¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
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| Keywords | 機能性流体 / パルス放電 / 放電気泡 / 気泡ジェット / 高活性化 / ラジカル / 難分解性有機物分解 / 水質浄化 / バルス放電 |
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| Research Abstract |
OH and O radicals are successfully generated in the original and improved multiple bubble jet systems with pulsed discharge. Then water treatment characteristics such as decomposion of harmful persistent substances in solution were clarified experimentally. The dynamic behavior of bubble jet with discharge, streamer propagation at the bubble interface and radicals generation in the treated solution were investigated. The docomposition rate and energy efficiency of methylene blue and acetic acid were clarified for the applied voltage, duty ratio, frequency, gas flow rate and systems configuration for the optimized water treatment processes. Furthermore, the dynamic behavior model of bubble in a fine tube under DC discharge was proposed by visulalization analysis. Finally, plasma chemistry model was also established to clarify the radical generation process and radical life time in a bubble with high pressure and high temperature conditions.
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