IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v14y2022i6p3306-d769206.html
   My bibliography  Save this article

Optimization of Solidification and Stabilization Efficiency of Heavy Metal Contaminated Sediment Based on Response Surface Methodology

Author

Listed:
  • Yang Yang

    (School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China)

  • Moting Li

    (School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China)

  • Yan Sun

    (School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China)

  • Huimin Gao

    (School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China)

  • Lingchen Mao

    (School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China)

  • He Zhang

    (School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China)

  • Hong Tao

    (School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China)

Abstract

Solidification and stabilization (S/S) by agents and stabilizers is an effective way to treat heavy metal-contaminated sediments. Optimization of curing condition is crucial to minimize the consumption of reagents on the base of effective S/S. In this work, the synergistic effects of cement and stabilizer on mechanical strength and leaching toxicity of contaminated sediments were investigated, and the S/S conditions were optimized using response surface methodology. On the basis of a single-factor test, multi-factor experiments were conducted to fit the relationship between the S/S effect of contaminated sediments and the amount of cement and stabilizer. The mechanism of stabilization was investigated by the results from the revised BCR method. The results indicate that the optimal curing conditions were 44.29% of cement content with 2.05% of trimercapto-s-triazine trisodium salt (TMT). After 28 days of curing, the compressive strength reached 2.07 MPa and the leaching concentrations of Cd, Cu, and Pb were 0.094 mg/L, 0.031 mg/L, and 0.173 mg/L, respectively, which met the requirement of in-situ resource recycling standard. The stability of heavy metals was significantly improved as a result of the removal of acid extractable fraction (15.58~69.92%) and an increase in the residual fraction (18.27~49.07%).

Suggested Citation

  • Yang Yang & Moting Li & Yan Sun & Huimin Gao & Lingchen Mao & He Zhang & Hong Tao, 2022. "Optimization of Solidification and Stabilization Efficiency of Heavy Metal Contaminated Sediment Based on Response Surface Methodology," Sustainability, MDPI, vol. 14(6), pages 1-10, March.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:6:p:3306-:d:769206
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/14/6/3306/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/14/6/3306/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Mert Guney & Zhanel Akimzhanova & Aiganym Kumisbek & Symbat Kismelyeva & Almira Guney & Ferhat Karaca & Vassilis Inglezakis, 2021. "Assessment of Distribution of Potentially Toxic Elements in Different Environmental Media Impacted by a Former Chlor-Alkali Plant," Sustainability, MDPI, vol. 13(24), pages 1-26, December.
    2. Vemula Anand Reddy & Chandresh H. Solanki & Shailendra Kumar & Krishna R. Reddy & Yan-Jun Du, 2020. "Stabilization/Solidification of Zinc- and Lead-Contaminated Soil Using Limestone Calcined Clay Cement (LC 3 ): An Environmentally Friendly Alternative," Sustainability, MDPI, vol. 12(9), pages 1-13, May.
    Full references (including those not matched with items on IDEAS)

    Citations

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


    Cited by:

    1. Zhitong Yao & Wei Qi & José Luiz Francisco Alves, 2023. "Editorial for the Special Issue on the Environmentally Friendly Management and Treatment of Solid Waste to Approach Zero Waste City," Sustainability, MDPI, vol. 15(1), pages 1-2, January.

    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. Zhiyong Wei & Zifang Chi, 2023. "Groundwater Risk Assessment Based on DRASTIC and Special Vulnerability of Solidified/Stabilized Heavy-Metal-Contaminated Sites," Sustainability, MDPI, vol. 15(4), pages 1-18, February.
    2. Symbat Kismelyeva & Rustem Khalikhan & Aisulu Torezhan & Aiganym Kumisbek & Zhanel Akimzhanova & Ferhat Karaca & Mert Guney, 2021. "Potential Human Exposure to Mercury (Hg) in a Chlor-Alkali Plant Impacted Zone: Risk Characterization Using Updated Site Assessment Data," Sustainability, MDPI, vol. 13(24), pages 1-18, December.

    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:6:p:3306-:d:769206. 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.