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Development of novel plasma water purification device by measuring a spatiotemporal concentration change

Research Project

Project/Area Number 17K14585
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Fluid engineering
Research InstitutionTohoku University

Principal Investigator

Uehara Satoshi  東北大学, 流体科学研究所, 助教 (70742394)

Research Collaborator Nishiyama Hideya  
Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2017: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywordsプラズマ / 水質浄化 / 細管内流動 / 気泡挙動 / 濃度変化 / 化学反応 / 流体工学
Outline of Final Research Achievements

In recent years, various studies have focused on water decontamination and purification using underwater plasma. It is known that the high chemical reactivity of
free radicals generated by non-thermal plasma can decompose pollutants, such as persistent organic pollutants (POPs), in water. In this research, the relation of discharge and bubble motion in between two capillaries are investigated. Analyzing high-speed images of discharge and bubble surface in the capillary arrows to clarify the synchronicity of the discharge in two capillaries.

Academic Significance and Societal Importance of the Research Achievements

細管を複数用いることでキャピラリー放電法の効率化を高めることに成功した。プラズマは高反応性があるがコスト面から大規模な水処理が難しい現状にあることを考慮すると、本研究手法により携帯用や家庭用を目的とした小型の水質浄化デバイスへの応用が考えられ、社会的に意義がある。また、複数管の放電同期性を解析する方法として構築した統計的解析は、本手法以外にも高速現象の同期性を解析するものとして、学術的にも有意義なものである。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (4 results)

All 2018 2017

All Presentation (4 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] Dynamic Characteristics of Underwater DC Biased Pulsed Capillary Discharge for High Efficiency Water Purification2018

    • Author(s)
      S.Kawaharada,S.Uehara, H.Takana and H.Nishiyama
    • Organizer
      15th International Conference on Flow Dynamics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 細管内放電を用いた小型水環境改善デバイスの開発2018

    • Author(s)
      上原聡司,川原田鎮一,宮岡泰浩,西山秀哉
    • Organizer
      第28回環境工学総合シンポジウム2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] 水質浄化のための放電を伴う2本細管内流動および分解特性解析2017

    • Author(s)
      宮岡泰浩、上原聡司、西山秀哉
    • Organizer
      日本混相流学会 混相流シンポジウム2017
    • Related Report
      2017 Research-status Report
  • [Presentation] Bubble Flow Analysis in Multiple-Capillary-Discharges for Water Treatment Device2017

    • Author(s)
      Satoshi Uehara, Yasuhiro Miyaoka, Hideya Nishiyama
    • Organizer
      Fourteenth International Conference on Flow Dynamics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2020-03-30  

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