2016 Fiscal Year Final Research Report
Treatment of wastewater with highly concentrated organic compounds using multiple plasmas generated within gas bubbles
| Project/Area Number |
15H05516
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Keywords | OHラジカル / 促進酸化処理 / 水中気泡内プラズマ / 高濃度有機排水 |
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| Outline of Final Research Achievements |
Plasma generated within oxygen gas bubbles was used for the decomposition of persistent organic compounds in water. The plasma was generated at 21 treatment holes in parallel, and hydrogen peroxide and ozone were selectively generated in each hole. In addition to the OH radicals generated by the plasma directly, OH radicals generated by the reaction involving hydrogen peroxide and ozone were effectively used for the decomposition of organic compounds. This plasma treatment achieved a higher energy efficiency and a higher decomposition rate than other plasma methods. Quantitative estimation of the amount of OH radical in water was also achieved using a chemical probe. Furthermore, the generation mechanism of hydrogen peroxide in plasma with liquid electrode was revealed by a numerical simulation model.
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| Free Research Field |
プラズマ工学
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