IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v14y2022i19p12535-d931248.html
   My bibliography  Save this article

Study on Phosphorus Removal Pathway in Constructed Wetlands with Thermally Modified Sepiolite

Author

Listed:
  • Pan Gao

    (Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China
    College of Environment, Hohai University, Nanjing 210098, China)

  • Chao Zhang

    (Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China
    College of Environment, Hohai University, Nanjing 210098, China)

Abstract

Constructed wetlands, as natural sewage treatment ecosystems, have been widely used in the fields of rural domestic sewage and sewage plant tailwater treatment. However, the synchronous removal of phosphorus in most constructed wetlands is not ideal. This study aimed to prepare thermally modified sepiolites with high phosphorus adsorption capacities and design a constructed wetland based on them. Thermal modification was adopted to enhance the adsorption capacity of sepiolite based on its high specific surface area and ion exchange capacity. The physicochemical properties and adsorption performance of thermally modified sepiolite were studied. The results showed that the specific surface area and adsorption capacity of thermally modified sepiolite were higher than those of natural sepiolite, reaching 19.494 mg·g −1 . The concentration of effluent and the removal of constructed wetlands based on thermally modified sepiolite was 0.07 mg·g −1 and 91.05%. An analysis of the phosphorus forms in constructed wetlands proved that the main phosphorus removal pathway is the adsorption of substrate, and the form of phosphorus was mainly Ca/Mg-P and Fe/Al-P.

Suggested Citation

  • Pan Gao & Chao Zhang, 2022. "Study on Phosphorus Removal Pathway in Constructed Wetlands with Thermally Modified Sepiolite," Sustainability, MDPI, vol. 14(19), pages 1-17, October.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:19:p:12535-:d:931248
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/14/19/12535/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/14/19/12535/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Liying Gong & Xuanxuan Zhao & Guangcan Zhu, 2022. "Pathways of Nitrogen and Phosphorus Utilization and Removal from Cyanobacteria Wastewater by Combining Constructed Wetlands with Aerobic Reactors," Sustainability, MDPI, vol. 14(14), pages 1-16, July.
    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.

      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:14:y:2022:i:19:p:12535-:d:931248. 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.