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Gas-liquid interfacial phenomena induced by pulsed discharge on the water surface using highly controlled high voltage burst pulses

Research Project

Project/Area Number 21K03994
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21010:Power engineering-related
Research InstitutionIwate University

Principal Investigator

Takahashi Katsuyuki  岩手大学, 理工学部, 准教授 (00763153)

Co-Investigator(Kenkyū-buntansha) 高木 浩一  岩手大学, 理工学部, 教授 (00216615)
竹内 希  東京工業大学, 工学院, 准教授 (80467018)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords水面上パルス放電 / パルスパワー / 非熱平衡プラズマ / ラジカル / イオン / 気液界面
Outline of Research at the Start

本研究の目的は、気液界面における水面上パルス放電後の反応場の緩和現象を観測し、これまで明らかにされていない気液界面放電現象における放電機構と水中化学現象の相互関係を解明することである。そのためには、パルス間隔、パルス幅、極性を自在に高精度で制御可能な独自の高電圧バーストパルス電源を開発し、水面上パルス放電の連続的な発生を実現する。そして、残留した放電生成粒子が、続けて発生する放電現象ならびに、水中ラジカル・化学反応に及ぼす影響とその機構を明らかにし、気液界面における放電現象と化学反応のモデルを構築する。

Outline of Final Research Achievements

Pulsed discharges on the water surface have been promised as a technology can be applied to various application fields. In this study, the influence of the pulsed discharges on the water surface on the gas-liquid interfacial reaction field was investigated by observing the development of the consecutive pulse discharges. The first and second discharges propagate along the same path and the development of the second pulse discharge is enhanced by the increasing gas temperature and the excited gas molecules caused by the first discharge. This phenomenon is observed when the interval time between the pulses is less than 20 μs. The discharge length of the second pulse is shorter than that of the first pulse with an interval time from 20 μs to several ms. The charges on the water surface reduce the electric field, which suppress the development of the second pulse discharge. The discharge length in the case of negative pulse is shorter than that of positive pulse.

Academic Significance and Societal Importance of the Research Achievements

独自のバーストパルス電圧を発生可能なパルスパワーシステムを構築し利用することによって、放電の進展と液中化学反応において極めて重要となる気液界面反応場における、放電現象と化学反応の相互作用を解明できるだけはなく、反応の高度制御と最適化によって応用技術におけるラジカル反応効率の飛躍的な向上を実現できるとの着想に至った。本研究により、いまだ解明されていない、複雑な気液界面反応場における物理・化学現象の振る舞いを体系的に明らかにすることが可能となり、革新的な学際融合連携技術の確立につながる

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (26 results)

All 2023 2022 2021

All Presentation (24 results) (of which Int'l Joint Research: 3 results,  Invited: 14 results) Book (2 results)

  • [Presentation] Observation of Two Consecutive Pulsed Discharge Over Water Surface2023

    • Author(s)
      K. Takahashi, S. Michigami, G. Ichii, T. Sakakibara, K. Takaki, N Takeuchi, D. Wang, and T. Namihira
    • Organizer
      第33回日本MRS年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 極性による水面上パルス放電の進展と有機物分解への影響2023

    • Author(s)
      一井元太,榊原哲,龍輝優,山本一人,高橋克幸,高木浩一,王斗艶,浪平隆男
    • Organizer
      応用物理学会東北支部 第78回学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] SiC-MOSFETを用いた小型軽量高電圧パルス発生装置の開発とその応用2023

    • Author(s)
      高橋克幸,高木浩一,黒岩丈晴,坂本邦博
    • Organizer
      プラズマ・核融合学会第40回年会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 小型パルス電源を用いたプラズマの生成と環境・農業への利用2023

    • Author(s)
      高橋克幸,高木浩一
    • Organizer
      令和5年度日本表面真空学会東北・北海道支部学術講演会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 高電圧プラズマと液体の相互作用とその利用可能性2023

    • Author(s)
      高橋克幸
    • Organizer
      ソフトパス理工学総合研究センター環境科学・工学研究グループ研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 大気圧低温プラズマを用いた気相・液相中の難分解性有機化合物の分解2023

    • Author(s)
      高橋克幸,高木浩一
    • Organizer
      化学工学会山形大会2023(3支部合同大会)
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] パルスパワーを用いた放電プラズマの形成と環境・農業への応用技術の開拓2023

    • Author(s)
      高橋克幸
    • Organizer
      環境資源工学会第141回学術講演会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] パルスパワーを用いた大気圧放電の生成と環境・農業への利用2023

    • Author(s)
      高橋克幸
    • Organizer
      第4回 電磁界応答流体を基盤としたエネルギー・環境先進技術に関する調査専門委員会研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Discharges over water surface generated by pulsed power generators and environmental and agricultural applications2023

    • Author(s)
      K. Takahashi and K. Takaki
    • Organizer
      The 7th Taiwan-Japan Workshop on Plasma Life Science and Technology (TJPL2023)
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Non-thermal plasma generated by high-voltage pulses and its applications for improving the growth and preserving the freshness of fruits and vegetables2023

    • Author(s)
      K. Takahashi and K. Takaki
    • Organizer
      12th International Conference on Flow Dynamics
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Environmental and agricultural applications of high-voltage and plasma2023

    • Author(s)
      K. Takahashi
    • Organizer
      Interdisciplinary Exchange Workshop for Future of Korea and Japan (IEWF-KJ)
    • Related Report
      2023 Annual Research Report
  • [Presentation] Overvation of two consecutive pulsed discharge over water surface in argon2023

    • Author(s)
      K. Takahashi, G. Ichii, T. Sakakibara, K. Takaki, N. Takeuchi, T. Ryu, K. Yamamoto, D. Wang, T. Namihira
    • Organizer
      25th International Symposium on Plasma Chemistry (ISPC25)
    • Related Report
      2023 Annual Research Report
  • [Presentation] Environmental and Agricultural Applications of Compact Pulsed Power Generators2023

    • Author(s)
      K. Takahashi
    • Organizer
      GPF-Aomori
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Waste water treatment using non-thermal plasma as a novel advanced oxidation process2023

    • Author(s)
      K. Takahashi and N. Takeuchi
    • Organizer
      9th IWA-ASPIRE Conference & Exhibition 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] 液面上連続パルス放電のパルス休止期間が温度特性ならびに放電特性に及ぼす影響2023

    • Author(s)
      道上竣介,榊原哲,竹内希,高橋克幸
    • Organizer
      静電気学会全国大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 液面上連続パルス放電のパルス休止期間が放電特性に及ぼす影響2023

    • Author(s)
      道上竣介,榊原哲,竹内希,高橋克幸
    • Organizer
      電気学会放電・プラズマ・パルスパワー研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 気液界面放電の放電観測およびラジカル供給効率の評価2022

    • Author(s)
      一井元太,榊原哲,龍輝優,山本一人,高橋克幸,高木浩一,王斗艶,浪平隆男
    • Organizer
      電気学会放電・プラズマ・パルスパワー研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] 極性による水面上パルス放電の進展と有機物分解への影響2022

    • Author(s)
      一井元太,榊原哲,高橋克幸,高木浩一,龍輝優,山本一人,浪平隆男
    • Organizer
      第46回静電気学会全国大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Agricultural and Environmental Applications of Plasma Discharges over Water Surface Generated by Pulsed Power Generator2022

    • Author(s)
      K. Takahashi, and K. Takaki
    • Organizer
      The 11th Rajamangala University of Technology International Conference
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] パルスパワーによる水面上プラズマの形成と環境浄化および農水分野への利用2022

    • Author(s)
      高橋克幸,高木浩一
    • Organizer
      日本表面真空学会 東北・北海道支部支部講演会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 気液界面プラズマを利用した農業・環境応用2022

    • Author(s)
      高橋克幸
    • Organizer
      2022年静電気学会東北・関西・九州支部合同研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Agricultural Applications of High Voltage Pulses and Atmospheric Discharges2022

    • Author(s)
      K. Takahashi and K. Takaki
    • Organizer
      14th International symposium on advanced plasma science and its applications for nitrides and nanomaterials/15th international conference on plasma-nano technology&science
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] プラズマによる液中へのラジカル供給とファインバブルによる効率向上2021

    • Author(s)
      高橋克幸
    • Organizer
      京都大学微細気泡研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Agricultural applications of high voltage pulses and atmospheric discharges2021

    • Author(s)
      K. Takahashi, K. Takaki
    • Organizer
      International symposium plasma tech challenges toward BCG
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] Processing of food products and waste with high voltage electrical discharge2023

    • Author(s)
      K. Takahashi, T. Tanino, T. Ohshima, and K. Takaki
    • Total Pages
      26
    • Publisher
      Elsevier
    • ISBN
      9780323954037
    • Related Report
      2023 Annual Research Report
  • [Book] Sewage - Recent Advances, New Perspectives and Applications- A Novel Wastewater Treatment Method Using Electrical Pulsed Discharge Plasma over a Water Surface2021

    • Author(s)
      K. Takahashi, K. Takaki, and N. Satta
    • Total Pages
      32
    • Publisher
      IntechOpen
    • ISBN
      9781839698255
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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