Complete Decomposing of Perfluoro Compounds in Solution Using Gas-Liquid Two-Phase Plasma

• Project/Area Number: 20360123
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: YASUOKA Koichi Tokyo Institute of Technology, 大学院・理工学研究科, 教授 (00272675)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥19,500,000 (Direct Cost: ¥15,000,000、Indirect Cost: ¥4,500,000); Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2009: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2008: ¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
• Keywords: 電気機器 / 有機フッ素化合物 / プラズマ / 気泡内プラズマ / 気液二相流 / 気泡内ララズマ / 水中プラズマ / PFOA / PFOS / 誘電体パルスバリア放電 / 誘電体バリア放電

Research Abstract

Plasmas in bubbles have successfully demonstrated energy-efficient and fast decomposition of perfluorocarbons; such as perfluorooctanoic acid and perfluorooctanesulfonic acid, which are environmentally harmful and persistent substances. 20~100 mL solutions at 50 mg/L concentration of perfluorocarbons were completely decomposed after 3~8 hours of operation with the plasma generated in bubbles. Higher decomposing rate and energy-efficiency were obtained compared with other reported methods.

Research Products

• [Journal Article] Experimental and theoretical study of acetic-acid decomposition by a pulsed dielectric-barrier plasma in a gas-liquid two-phase flow (2011)
  • Author(s): Y.Matsui, N.Takeuchi, K.Sasaki, R.Hayashi, K.Yasuoka
  • Journal Title: Plasma Sources Sci.Technol. vol.20
  • Peer Reviewed
• [Journal Article] An energy-efficient process for decomposing perfluorooctanoic and perfluorooctane sulfonic acids using dc plasmas generated within gas bubbles (2011)
  • Author(s): 安岡康一, 佐々木敬介, 林竜一
  • Journal Title: Plasma Sources Sci.Technol. vol.20
  • Peer Reviewed
• [Journal Article] An energy-efficient process for decomposing perfluorooctanoic and perfluorooctane sulfonic acids using dc plasmas generated within gas bubbles (2011)
  • Author(s): K.Yasuoka, K.Sasaki, R.Hayashi
  • Journal Title: Plasma Sources Sci.Technol. Volume: 20
  • Peer Reviewed
• [Journal Article] Experimental and theoretical study of acetic-acid decomposition by a pulsed dielectric-barrier plasma in a gas-liquid two-phase flow (2011)
  • Author(s): Y.Matsui, N.Takeuchi, K.Sasaki, R.Hayashi, K.Yasuoka
  • Journal Title: Plasma Sources Sci.Technol. Volume: 20
  • Peer Reviewed
• [Journal Article] Degradation of Perfluoro Compounds and F-Recovery in Water Using Discharge Plasmas Generated within Gas Bubbles (2010)
  • Author(s): K.Yasuoka, K.Sasaki, R.Hayashi, A.Kosugi, N.Takeuchi
  • Journal Title: International Journal of Plasma Environmental Science & Technology vol.4 Pages: 113-117
  • Peer Reviewed
• [Journal Article] 水中気泡内パルス放電による有機フッ素化合物の分解 (2010)
  • Author(s): 佐々木敬介, 林竜一, 安岡康一
  • Journal Title: 電気学会論文誌A vol.130 Pages: 985-986
  • NAID: 10026693737
  • Peer Reviewed
• [Journal Article] 水中気泡内パルス放電による有機フッ素化合物の分解 (2010)
  • Author(s): 佐々木敬介, 林竜一, 安岡康一
  • Journal Title: 電気学会論文誌A Volume: 130 Pages: 985-986
  • NAID: 10026693737
  • Peer Reviewed
• [Journal Article] Degradation of Perfluoro Compounds and F-Recovery in Water Using Discharge Plasmas Generated Within Gas Bubbles (2010)
  • Author(s): K.Yasuoka, K.Sasaki, R.Hayashi, A.Kosugi, N.Takeuchi
  • Journal Title: International Journal of Plasma Environmental Science & Technology Volume: 4 Pages: 113-117
  • Peer Reviewed
• [Presentation] 大気圧プラズマによる水中難分解性有機フッ素化合物の分解反応過程の検討と大容量リアクタへ向けた開発 (2010)
  • Author(s): 林竜一, 竹内希, 安岡康一
  • Organizer: 電気学会プラズマ/パルスパワー合同研究会
  • Place of Presentation: 東京工業大学
  • Year and Date: 2010-12-18
• [Presentation] 大気圧プラズマによる水中難分解性有機フッ素化合物の分解反応過程の検討と大容量リアクタへ向けた開発 (2010)
  • Author(s): 林竜一, 竹内希, 安岡康一
  • Organizer: 電気学会プラズマ/パルスパワー合成研究会
  • Place of Presentation: 東京, 日本
  • Year and Date: 2010-12-18
• [Presentation] 水中気泡内放電プラズマによる有機フッ素化合物の分解 (2010)
  • Author(s): 林竜一, 安岡康一
  • Organizer: 平成22年電気学会基・材料・共通部門大会
  • Place of Presentation: 琉球大学
  • Year and Date: 2010-09-13
• [Presentation] 水中気泡内放電プラズマによる有機フッ素化合物の分解 (2010)
  • Author(s): 林竜一, 安岡康一
  • Organizer: 平成22年電気学会 基礎・材料・共通部門大会
  • Place of Presentation: 沖縄, 日本
  • Year and Date: 2010-09-13
• [Presentation] Degradation of Perfluoro Compounds and F-Recovery in Water (2010)
  • Author(s): K.Yasuoka, K.Sasaki, R.Hayashi, A.Kosugi, N.Takeuchi
  • Organizer: International Symposium on Non-Thermal/Thermal Plasma Pollution Control Technology & Sustainable Energy
  • Place of Presentation: Newfoundland
  • Year and Date: 2010-06-22
• [Presentation] Degradation of Perfluoro Compounds and F-Recovery in Water (2010)
  • Author(s): K.Yasuoka, K.Sasaki, R.Hayashi, A.Kosugi, N.Takeuchi
  • Organizer: International Symposium on Non-Thermal/Thermal Plasma Pollution Control Technology & Sustainable Energy
  • Place of Presentation: Newfoundland, Canada
  • Year and Date: 2010-06-22
• [Presentation] 水中気泡内プラズマによるラジカルの発生と利用 (2010)
  • Author(s): 安岡康一
  • Organizer: 日本混相流学会研究分科会
  • Place of Presentation: 東北大学(招待)
  • Year and Date: 2010-05-28
• [Presentation] 水中気泡内プラズマによるラジカルの発生と利用 (招待) (2010)
  • Author(s): 安岡康一
  • Organizer: 日本混相流学会研究分科会
  • Place of Presentation: 仙台, 日本
  • Year and Date: 2010-05-28
• [Presentation] 水中気泡内直流放電プラズマによる高効率水中PFOS分解処理 (2010)
  • Author(s): 佐々木敬介, 林竜一, 安岡康一
  • Organizer: 日本化学会第90春季年会
  • Place of Presentation: 近畿大学
  • Year and Date: 2010-03-29
• [Presentation] 水中気泡内直流放電プラズマによる高効率水中PFOS分解処理 (2010)
  • Author(s): 佐々木敬介, 林竜一, 安岡康一
  • Organizer: 日本化学会第90春季年会
  • Place of Presentation: 大阪,日本
  • Year and Date: 2010-03-29
• [Presentation] Degradation Mechanisms of Persistent Compounds in Water Using Discharge Plasmas Generated Inside Gas Bubbles (2010)
  • Author(s): 安岡康一
  • Organizer: International Workshop on Plasmas with Liquids
  • Place of Presentation: Matsuyama
  • Year and Date: 2010-03-22
• [Presentation] Degradation Mechanisms of Persistent Compounds in Water Using Discharge Plasmas Generated Inside Gas Bubbles (2010)
  • Author(s): K.Yasuoka
  • Organizer: International Workshop on Plasmas with Liquids (IWPL 2010)
  • Place of Presentation: 松山,日本
  • Year and Date: 2010-03-22
• [Presentation] 水中気泡内直流放電による水中有機フッ素化合物の分解 (2010)
  • Author(s): 佐々木敬介, 林竜一, 安岡康一
  • Organizer: 平成22年電気学会全国大会
  • Place of Presentation: 明治大学
  • Year and Date: 2010-03-17
• [Presentation] 水中気泡内直流放電による水中有機フッ素化合物の分解 (2010)
  • Author(s): 佐々木敬介, 林竜一, 安岡康一
  • Organizer: 平成22年電気学会全国大会
  • Place of Presentation: 東京,日本
  • Year and Date: 2010-03-17
• [Presentation] 水中気泡内直流放電による難分解性有機フッ素化合物の高速・高効率分解 (2010)
  • Author(s): 林竜一, 佐々木敬介, 安岡康一
  • Organizer: 第44回日本水環境学会年会
  • Place of Presentation: 福岡大学
  • Year and Date: 2010-03-16
• [Presentation] 水中気泡内直流放電による難分解性有機フッ素化合物の高速・高効率分解 (2010)
  • Author(s): 林竜一, 佐々木敬介, 安岡康一
  • Organizer: 第44回日本水環境学会年会
  • Place of Presentation: 福岡,日本
  • Year and Date: 2010-03-16
• [Presentation] 気液二相流内酸素放電による水中有機フッ素化合物の分解 (2009)
  • Author(s): 佐々木敬介, 林竜一, 安岡康一
  • Organizer: 第56回応用物理学関係連合学術講演会
  • Place of Presentation: 筑波大学
  • Year and Date: 2009-03-31
• [Presentation] 気液二相流内酸素放電による水中有機フッ素化合物の分解 (2009)
  • Author(s): 佐々木敬介, 林竜一, 安岡康一
  • Organizer: 第56回応用物理学関係連合学術講演会
  • Place of Presentation: つくば, 日本
  • Year and Date: 2009-03-31
• [Presentation] 気液二相流内パルスバリア放電による水中有機フッ素化合物の分解 (2009)
  • Author(s): 佐々木敬介, 林竜一, 安岡康一
  • Organizer: 電気学会全国大会
  • Place of Presentation: 海道大学
  • Year and Date: 2009-03-17
• [Presentation] 気液二相流内パルスバリア放電による水中有機フツ素化合物の分解 (2009)
  • Author(s): 佐々木敬介, 林 竜一, 安岡康一
  • Organizer: 電気学会全国大会
  • Place of Presentation: 札幌, 日本
  • Year and Date: 2009-03-17
• [Presentation] 気液二相流プラズマリアクタを用いた水中有機物分解と分解過程の検討 (2008)
  • Author(s): 松井保明, 佐々木敬介, 安岡康一
  • Organizer: 電気学会プラズマ研究会
  • Place of Presentation: 同志社大学
  • Year and Date: 2008-12-19
• [Presentation] 気液二相流プラズマリアクタを用いた水中有機物分解と分解過程の検討 (2008)
  • Author(s): 松井保明, 佐々木敬介, 安岡康一
  • Organizer: 電気学会プラズマ研究会
  • Place of Presentation: 京都, 日本
  • Year and Date: 2008-12-19
• [Presentation] Pulsed Dielectric Barrier Discharge and OH Radical Formation in Gas-Liquid Two-Phase Flow for Water Purification (2008)
  • Author(s): K. Yasuoka, K. Sasaki, Y. Matsui
  • Organizer: Int. Interdisciplinary-Symposium on Gaseous and Liquid Plasmas
  • Place of Presentation: 仙台, 日本
  • Year and Date: 2008-09-06
• [Presentation] Pulsed Dielectric Barrier Discharge and OH Radical Formation in Gas-Liquid Two-Phase Flow for Water Purification (2008)
  • Author(s): 安岡康一, 佐々木敬介, 松井保明
  • Organizer: Int.Interdisciplinary-Symposium on Gaseous and Liquid Plasmas
  • Place of Presentation: Tohoku University
  • Year and Date: 2008-09-05