IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v14y2022i9p5604-d809817.html
   My bibliography  Save this article

Study on Properties of Copper-Contaminated Soil Solidified by Solid Waste System Combined with Cement

Author

Listed:
  • Lisheng Liang

    (Department of Civil and Architectural Engineering, Shanxi Institute of Technology, Yangquan 045000, China
    The Cultivation Base of Shanxi Key Laboratory of Mining Area Ecological Restoration and Solid Wastes Utilization, Yangquan 045000, China)

  • Jieya Zhang

    (College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

  • Peiying Fang

    (College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

  • Chongxian Suo

    (College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

Abstract

Three industrial solid wastes including red mud, carbide slag, and phosphogypsum combined with ordinary Portland cement were used as curing agents to solidify/stabilize loess polluted by a high concentration of copper ions. The unconfined compressive strength, resistivity, permeability coefficient, copper ion leaching concentration, pH value, and other engineering application evaluation indexes were analyzed to preliminarily assess the applicability of the curing agent in the remediation of soil contaminated with a high concentration of copper ions. The mineral phases and functional groups of solidified soil were detected using XRD and FTIR, showing that the strength, electrical resistivity, and pH value of solidified soil decrease following the addition of copper ions. Moreover, the strength and resistivity of solidified soil increase with the curing age, and the pH value decreases with age. For solidified contaminated soil, when the total content of curing agent increases from 10 to 20%, the maximum 28 d strength increases from 1.35 to 5.43 MPa, and in this study, its permeability coefficient, copper ion leaching concentration, and pH value were found to be within the limits set by relevant national standards. In conclusion, red mud-carbide slag-phosphogypsum combined with cement has a good stabilizing effect on sites polluted with a high concentration of copper ions.

Suggested Citation

  • Lisheng Liang & Jieya Zhang & Peiying Fang & Chongxian Suo, 2022. "Study on Properties of Copper-Contaminated Soil Solidified by Solid Waste System Combined with Cement," Sustainability, MDPI, vol. 14(9), pages 1-19, May.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:9:p:5604-:d:809817
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/14/9/5604/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/14/9/5604/
    Download Restriction: no
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Xinming Li & Pan Yan & Song Yin & Xianwei Zhang & Pengfei Liu & Yulong Wang, 2023. "Strength Characteristics and Micro-Mechanism of Silty Soil Modified by Red Mud Co-Cement," Sustainability, MDPI, vol. 15(11), pages 1-19, May.

    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:9:p:5604-:d:809817. 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: 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.