The Developement of Advanced Oxidation Processes for Direct Degradation of Slowly Biodegradable Organic Matters
| Project/Area Number |
08455240
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Civil and environmental engineering
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
SOMIYA Isao Kyoto University, Graduate School of Engineering, Professor, 工学研究科, 教授 (60025947)
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| Co-Investigator(Kenkyū-buntansha) |
KISHIMOTO Naoyuki Kyoto University, Graduate School of Engineering, Instructor, 工学研究科, 助手 (00293895)
MIYATA Jun Kyoto University, Graduate School of Engineering, Instructor, 工学研究科, 助手 (80273481)
西村 文武 京都大学, 工学研究科, 助手 (60283636)
津野 洋 京都大学, 工学部, 教授 (40026315)
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| Project Period (FY) |
1996 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 1997: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1996: ¥2,600,000 (Direct Cost: ¥2,600,000)
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| Keywords | Advanced Oxidation Process / slowly biodegradable organic matter / ozone / organochlorine compound |
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| Research Abstract |
In this study, treatment characteristics and reaction mechanisms of advanced oxidation processes for the direct degradation of humic acid, trichloroethylene (TCE), and 1,1,1-trichloroethane (1,1,1-TCE) were examined.
Decoloration process of humic acid by ozonation was described by Michaelis-Menten's formula, whose rate constant of reaction and Michaelis constant were proportional to the rate of ozonation and the initial concentration of humic acid respectively. Ozonation for 30 minutes degraded 91.7% of the initial TCE and none of 1,1,1-TCE.But the ozone-hydrogen peroxide process for 30 minutes could degrade 22.2% of 1,1,1-TCE and the rate constant of reaction of TCE was 1.5 times larger than that with the ozonation process. Ozone-UV process could decolor humic acid solution, furthermore it could decompose 95% of the initial total organic carbon (TOC) with UV intensity not less than 4.7 W.The ratio of decomposed TOC to the initial TOC reached two times larger than that with the ozonation process. This was thought to be caused by oxidative decomposition of organic acids, which was inferred by the transition of pH.The ozone-UV process for 30 minutes could degrade 97.8% of the initial TCE,and 53.2% of the initial 1,1,1-TCE.As a result, it was clarified that the advanced oxidation processes, especially ozone-UV process, were effective to the degradation of slowly biodegradable organic matters.
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Report
(3 results)
Research Products
(17 results)
