IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v242y2025ics0960148125000734.html
   My bibliography  Save this article

Production of high-grade biocrude and recovery of nutrient elements from wet torrefaction of sewage sludge coupled with co-liquefaction with soybean straw

Author

Listed:
  • Wang, Mengjiao
  • Zhou, Wenguang
  • Wang, Yunpu
  • Jiang, Haiwei
  • Wang, Weixin
  • Wu, Jiabo
  • Hu, Jinye
  • Luo, Ting
  • Wang, Qi
  • Hu, Yuhang
  • Fan, Liangliang

Abstract

The application of hydrothermal liquefaction (HTL) technology for the production of biocrude is limited by the high N and O contents. In this study, a process combining wet torrefaction and co-HTL with soybean straw was developed for elevating biocrude production and quality. After the wet torrefaction, up to 30.9 % N and 35.4 % O of SS were removed. The HTL of the torrefied SS by co-feeding with soybean straw increased the biocrude yield to as high as 29.1 wt%. When the ratio of soybean straw and the torrefied SS was 2:1, the highest synergistic extents of denitrogenation and deoxygenation were obtained. Based on the N-rich aqueous phase from the wet torrefaction and P-rich solid residue from the co-HTL, a method of coupling recovery of N and P nutrients was proposed to produce the value-added N and P fertilizer (struvite), with the N and P recovery rates of 78.1 % and 94.0 %, respectively.

Suggested Citation

  • Wang, Mengjiao & Zhou, Wenguang & Wang, Yunpu & Jiang, Haiwei & Wang, Weixin & Wu, Jiabo & Hu, Jinye & Luo, Ting & Wang, Qi & Hu, Yuhang & Fan, Liangliang, 2025. "Production of high-grade biocrude and recovery of nutrient elements from wet torrefaction of sewage sludge coupled with co-liquefaction with soybean straw," Renewable Energy, Elsevier, vol. 242(C).
    • Handle: RePEc:eee:renene:v:242:y:2025:i:c:s0960148125000734
    DOI: 10.1016/j.renene.2025.122411
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148125000734
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.renene.2025.122411?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:renene:v:242:y:2025:i:c:s0960148125000734. 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/renewable-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.