IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v15y2023i8p6397-d1118825.html
   My bibliography  Save this article

Influence of Electrodes Configuration on Hydraulic Characteristics of Constructed Wetland–Microbial Fuel Cell Systems Using Graphite Rods and Plates as Electrodes

Author

Listed:
  • Xiaoou Wang

    (Key Laboratory of Clean Energy Utilization and Pollutant Control in Tianjin, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

  • Yu Zhang

    (Key Laboratory of Clean Energy Utilization and Pollutant Control in Tianjin, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

  • Changping Zhang

    (Key Laboratory of Clean Energy Utilization and Pollutant Control in Tianjin, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

  • Jiayin Li

    (Key Laboratory of Clean Energy Utilization and Pollutant Control in Tianjin, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

  • Ming Xue

    (Key Laboratory of Clean Energy Utilization and Pollutant Control in Tianjin, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

  • Weiyi Xia

    (Key Laboratory of Clean Energy Utilization and Pollutant Control in Tianjin, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

Abstract

Constructed wetland–microbial fuel cell coupling systems (CW–MFCs) have received significant academic interest in the last decade mainly due to the promotion of MFCs in relation to pollutants’ degradation in CWs. Firstly, we investigated the effect of hydraulic retention time (HRT) and electrode configuration on the flow field characteristics of CW–MFCs using graphite rods and plates as electrodes, as well as the optimization of electrode configuration using computational fluid dynamics (CFD) numerical simulation. The results showed that: (1) the apparent HRT was the most influential and decisive factor, with a contribution of over 90% for the average HRT of CW–MFCs; (2) anode spacing was the most influential factor for the hydraulic performance of CW–MFCs, with contributions of over 50% for water flow divergence and hydraulic efficiency ( λ ) and over 45% for effective volume ratio ( e ); (3) anode size was significant for e and λ, with a contribution of over 20%; (4) cathode position and cathode size had no statistically significant effect on the hydraulic performance of CW–MFCs. It was mainly through the blocking of water flows, flows around, compressing water flow channels and boundary layer separation that the MFC electrodes influenced the hydraulic characteristics of the flow field in CW–MFCs. Optimizing the flow field by optimizing the electrode configuration helped to facilitate electricity generation and pollutants’ removal in CW–MFCs. This study offers a scientific reference for improving the hydraulic performance of CW–MFCs, and it also provides a new research perspective for improving the wastewater treatment and electricity production performance of CW–MFCs.

Suggested Citation

  • Xiaoou Wang & Yu Zhang & Changping Zhang & Jiayin Li & Ming Xue & Weiyi Xia, 2023. "Influence of Electrodes Configuration on Hydraulic Characteristics of Constructed Wetland–Microbial Fuel Cell Systems Using Graphite Rods and Plates as Electrodes," Sustainability, MDPI, vol. 15(8), pages 1-21, April.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:8:p:6397-:d:1118825
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/15/8/6397/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/15/8/6397/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Sang-Soo Han & Zhi Chen & Fa-Yi Zhou & Xiu-Qing Lu, 2014. "Assessment of Suspended Solid Removal in a Surface Flow Constructed Wetland Using a Three-Dimensional Numerical Model," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 28(10), pages 3111-3125, August.
    2. Salma Elhenawy & Majeda Khraisheh & Fares AlMomani & Mohammad Al-Ghouti & Mohammad K. Hassan, 2022. "From Waste to Watts: Updates on Key Applications of Microbial Fuel Cells in Wastewater Treatment and Energy Production," Sustainability, MDPI, vol. 14(2), pages 1-23, January.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Öznur Kocaer & Alpaslan Yarar, 2020. "Experimental and Numerical Investigation of Flow Over Ogee Spillway," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 34(13), pages 3949-3965, October.
    2. Adrián Hernández-Fernández & Eduardo Iniesta-López & Yolanda Garrido & Ioannis A. Ieropoulos & Francisco J. Hernández-Fernández, 2023. "Microbial Fuel Cell Using a Novel Ionic-Liquid-Type Membrane-Cathode Assembly with Heterotrophic Anodic Denitrification for Slurry Treatment," Sustainability, MDPI, vol. 15(20), pages 1-18, October.
    3. Maria G. Savvidou & Pavlos K. Pandis & Diomi Mamma & Georgia Sourkouni & Christos Argirusis, 2022. "Organic Waste Substrates for Bioenergy Production via Microbial Fuel Cells: A Key Point Review," Energies, MDPI, vol. 15(15), pages 1-53, August.
    4. Hosseini Dehshiri, Seyyed Shahabaddin & Firoozabadi, Bahar, 2023. "A novel four-stage integrated GIS based fuzzy SWARA approach for solar site suitability with hydrogen storage system," Energy, Elsevier, vol. 278(PA).

    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:jsusta:v:15:y:2023:i:8:p:6397-:d:1118825. 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.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with 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.