IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v296y2024ics0360544224009885.html
   My bibliography  Save this article

Effects of applied voltages on electron transfer pathways for bioelectrochemical methane production from maize straw

Author

Listed:
  • Li, Xiaoxiang
  • Cao, Hongrui
  • Feng, Qing
  • Lv, Yaowei
  • Zhao, Yong
  • Pan, Hongda

Abstract

The electron transfer pathways for CH4 production from maize straw are investigated in the bioelectrochemical anaerobic digestion (BEAD) under different applied voltages of (0.5–12) V, and compared to that of the conventional anaerobic digestion. The CH4 yield is 589.8 mL/g Volatile solid (VS) in BEAD reactor under the applied voltage of 4 V, which is remarkably higher than the 175.7 mL/g VS of the control reactor and the other BEAD reactors of (0.5, 1, 2, 8) V. The CH4 production was mainly improved by the direct interspecies electron transfer (DIET) activated by electroactive microorganisms in the bulk solution, rather than that on the electrode surface, and varied under different applied voltage. The contribution of biological DIET pathway in the bulk solution was 73.5 % of total CH4 production under the applied voltage of 4 V, followed by the indirect interspecies electron transfer pathway (23.1 %), and electrode pathway (3.4 %). These findings provide critical knowledge for the large-scale use of the bioelectrochemical process, and the recycling of maize straw.

Suggested Citation

  • Li, Xiaoxiang & Cao, Hongrui & Feng, Qing & Lv, Yaowei & Zhao, Yong & Pan, Hongda, 2024. "Effects of applied voltages on electron transfer pathways for bioelectrochemical methane production from maize straw," Energy, Elsevier, vol. 296(C).
    • Handle: RePEc:eee:energy:v:296:y:2024:i:c:s0360544224009885
    DOI: 10.1016/j.energy.2024.131215
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544224009885
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2024.131215?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    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:eee:energy:v:296:y:2024:i:c:s0360544224009885. 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: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    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.