IDEAS home Printed from https://ideas.repec.org/a/gam/jijerp/v19y2022i12p7209-d837150.html
   My bibliography  Save this article

The Assessment of Indoor Formaldehyde and Bioaerosol Removal by Using Negative Discharge Electrostatic Air Cleaners

Author

Listed:
  • Chao-Yun Liu

    (Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei 106344, Taiwan)

  • Chao-Heng Tseng

    (Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei 106344, Taiwan)

  • Kai-Feng Wang

    (Union Professional Group of Architecture, Taipei 110057, Taiwan)

Abstract

This study investigated the single-pass performance of a negative corona electrostatic precipitators (ESP) in removing suspended particulates (PM 2.5 and PM 10 ), formaldehyde (HCHO), and bioaerosols (bacteria and fungi) and measured the ozone (O 3 ) concentration generated by ESP. The experimental results revealed that if the operational conditions for the ESP were set to high voltage (−10.5 kV) and low air flow rate (2.4 m 3 /min), ESP had optimal air pollutant removal efficiency. In the laboratory system, its PM 2.5 and PM 10 removal rates both reached 99% at optimal conditions, and its HCHO removal rate was 55%. In field tests, its PM 2.5 , PM 10 , HCHO, bacteria, and fungi removal rates reached 89%, 90%, 46%, 69%, and 85% respectively. The ESP in the laboratory system (−10.5 kV and 2.4 m 3 /min) generated 7.374 ppm of O 3 under optimal conditions. Under the same operational conditions, O 3 generated by ESP in the food waste storage room and the meeting room were 1.347 ppm and 1.749 ppm, respectively. The removal of HCHO and bioaerosols was primarily attributed to their destruction in the corona, as well as ozone oxidation, and collection on the dust collection plate.

Suggested Citation

  • Chao-Yun Liu & Chao-Heng Tseng & Kai-Feng Wang, 2022. "The Assessment of Indoor Formaldehyde and Bioaerosol Removal by Using Negative Discharge Electrostatic Air Cleaners," IJERPH, MDPI, vol. 19(12), pages 1-15, June.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:12:p:7209-:d:837150
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1660-4601/19/12/7209/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1660-4601/19/12/7209/
    Download Restriction: no
    ---><---

    More about this item

    Keywords

    ;
    ;
    ;
    ;
    ;

    Statistics

    Access and download statistics

    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:jijerp:v:19:y:2022:i:12:p:7209-:d:837150. 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.