IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v15y2022i11p4028-d828195.html
   My bibliography  Save this article

Development and Evaluation of Newly Designed Coaxial Cylindrical Plasma Reactor with Liquid Flow Control and Post-Discharge Reactions for Water Treatment

Author

Listed:
  • Kosuke Tachibana

    (Department of Innovative Engineering, Oita University, 700 Dannoharu, Oita 870-1192, Japan)

  • Ryosuke Hanabata

    (Department of Innovative Engineering, Oita University, 700 Dannoharu, Oita 870-1192, Japan
    Current address: Kobe Works, Mitsubishi Electric Corporation, 1-1-2 Wadasaki-Cho, Kobe 652-8555, Japan.)

  • Takashi Furuki

    (Department of Innovative Engineering, Oita University, 700 Dannoharu, Oita 870-1192, Japan)

  • Ryuta Ichiki

    (Department of Innovative Engineering, Oita University, 700 Dannoharu, Oita 870-1192, Japan)

  • Seiji Kanazawa

    (Department of Innovative Engineering, Oita University, 700 Dannoharu, Oita 870-1192, Japan)

  • Marek Kocik

    (Institute of Fluid Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-231 Gdańsk, Poland)

Abstract

Water purification by non-equilibrium atmospheric pressure plasma has attracted much attention and is expected to be a next-generation method. However, general approaches to improve the energy efficiency of the water purification have not been revealed. Therefore, to investigate important factors for increasing its energy efficiency, we developed coaxial cylindrical plasma reactors where pulsed streamers were generated between a high-voltage electrode and running water film. To evaluate the performance of the plasma reactors, we measured hydroxyl (OH) radicals in solution based on a chemical probe method using disodium terephthalic acid (NaTA) and decolorized indigo carmine solution. Our experimental results showed that the production rate of the OH radicals was approximately 20 nmol/s and that the energy efficiency of the decolorization was on the order of 10 g/kWh. In addition, we found that controlling liquid flow based on the Coandă effect and introducing the intermittent operation of the streamer discharges to use post-discharge reactions increased the energy efficiency by a factor of approximately 3.5, which indicated that these approaches are effective to improve the performance of the water purification by plasma.

Suggested Citation

  • Kosuke Tachibana & Ryosuke Hanabata & Takashi Furuki & Ryuta Ichiki & Seiji Kanazawa & Marek Kocik, 2022. "Development and Evaluation of Newly Designed Coaxial Cylindrical Plasma Reactor with Liquid Flow Control and Post-Discharge Reactions for Water Treatment," Energies, MDPI, vol. 15(11), pages 1-15, May.
  • Handle: RePEc:gam:jeners:v:15:y:2022:i:11:p:4028-:d:828195
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/15/11/4028/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1996-1073/15/11/4028/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:15:y:2022:i:11:p:4028-:d:828195. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.