IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v16y2024i13p5733-d1429139.html
   My bibliography  Save this article

Iron- and Nitrogen-Modified Biochar for Nitrate Adsorption from Aqueous Solution

Author

Listed:
  • Sohrab Haghighi Mood

    (Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164, USA)

  • Manuel Raul Pelaez-Samaniego

    (Department of Applied Chemistry and Production Systems, Faculty of Chemical Sciences, University of Cuenca, Cuenca 010107, Ecuador)

  • Yinglei Han

    (Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164, USA
    Department of Bioresource and Environmental Security, Sandia National Laboratories, 7011 East Avenue, Livermore, CA 94550, USA)

  • Kalidas Mainali

    (Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164, USA
    US Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Sustainable Biofuels and Co-Products Research Unit, Wyndmoor, PA 19038, USA)

  • Manuel Garcia-Perez

    (Department of Biological Systems Engineering, Washington State University, Pullman, WA 99164, USA)

Abstract

Nutrient pollution poses a significant global environmental threat, and addressing this issue remains an ongoing challenge. Biochar has been identified as a potential adsorbent for environmental remediation. However, raw biochar has a low nitrate adsorption capacity; thus, biochar modification is necessary for targeted environmental applications. This work explored and compared the performance of Fe-doped, N-doped, and N-Fe-co-doped biochars from Douglas fir toward nitrate removal from an aqueous solution. A central composite experimental design was used to optimize processing variables, maximizing the surface area and nitrate adsorption capacity. Proximate analysis, elemental composition, gas physisorption, XPS, SEM, TEM, FTIR, and XRD were used to characterize the biochar’s properties. Pyrolysis under NH 3 gas generated more pores in biochar than conventional pyrolysis. Doping biochar with N and Fe improved nitrate adsorption capacity from aqueous solutions. The maximum nitrate adsorption capacity of Fe-N-doped biochar produced at 800 °C was 20.67 mg g −1 in sorption tests at pH 3.0. The formation of N-containing functional groups and Fe oxides on the biochar surface enhanced the nitrate removal efficiency of N-Fe biochar. The results indicate that biochar’s adsorption capacity for NO 3 − is largely affected by the solution’s pH and biochar’s surface chemistry. Electrostatic attraction is the primary mechanism for nitrate adsorption.

Suggested Citation

  • Sohrab Haghighi Mood & Manuel Raul Pelaez-Samaniego & Yinglei Han & Kalidas Mainali & Manuel Garcia-Perez, 2024. "Iron- and Nitrogen-Modified Biochar for Nitrate Adsorption from Aqueous Solution," Sustainability, MDPI, vol. 16(13), pages 1-22, July.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:13:p:5733-:d:1429139
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/16/13/5733/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/16/13/5733/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Soon-Jin Hwang, 2020. "Eutrophication and the Ecological Health Risk," IJERPH, MDPI, vol. 17(17), pages 1-6, August.
    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. Jinxin Liu & Qinghao Jin & Junfeng Geng & Jianxin Xia & Yanhong Wu & Huiying Chen, 2023. "Fast Capture and Efficient Removal of Bloom Algae Based on Improved Dielectrophoresis Process," IJERPH, MDPI, vol. 20(1), pages 1-12, January.
    2. Eva M. García del Toro & Luis Francisco Mateo & Sara García-Salgado & M. Isabel Más-López & Maria Ángeles Quijano, 2022. "Use of Artificial Neural Networks as a Predictive Tool of Dissolved Oxygen Present in Surface Water Discharged in the Coastal Lagoon of the Mar Menor (Murcia, Spain)," IJERPH, MDPI, vol. 19(8), pages 1-12, April.
    3. Qiaoyan Lin & Yu Song & Yixin Zhang & Jian Li Hao & Zhijie Wu, 2022. "Strategies for Restoring and Managing Ecological Corridors of Freshwater Ecosystem," IJERPH, MDPI, vol. 19(23), pages 1-19, November.

    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:16:y:2024:i:13:p:5733-:d:1429139. 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.