IDEAS home Printed from https://ideas.repec.org/a/gam/jijerp/v15y2018i11p2595-d184266.html
   My bibliography  Save this article

Remediating Potentially Toxic Metal and Organic Co-Contamination of Soil by Combining In Situ Solidification/Stabilization and Chemical Oxidation: Efficacy, Mechanism, and Evaluation

Author

Listed:
  • Yan Ma

    (School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Zhenhai Liu

    (School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Yanqiu Xu

    (School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Shengkun Zhou

    (School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Yi Wu

    (School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Jin Wang

    (School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Zhanbin Huang

    (School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Yi Shi

    (State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China)

Abstract

Most soil remediation studies investigated single contaminants or multiple contaminants of the same type. However, in field conditions, soils are often contaminated with potentially both toxic metals and organic pollutants, posing a serious technical challenge. Here, batch experiments were conducted to evaluate the performance of combining in situ solidification/stabilization (ISS) and in situ chemical oxidation (ISCO) for the simultaneous removal of aniline (1000 mg/kg) and Cd (10 mg/kg). All four tested ISS amendments, especially quick lime and Portland cement, promoted in situ chemical oxidation with activated persulfate in contaminated soil. Combined ISS/ISCO remediation effectively removed aniline and reduced the bioavailable Cd content at optimal initial persulfate and ISS amendment concentrations of 1.08 mol/kg and 30 wt% with a seven-day curing time, and significantly reduced leaching. Persulfate inhibited the reduction of the bioavailable Cd content, and ISS amendment with persulfate did not synergistically remediate Cd in co-contaminated soil. Strong alkalinity and high temperature were the main mechanisms driving rapid pollutant removal and immobilization. The reaction of CaO with water released heat, and Ca(OH) 2 formation increased the pH. The relative contributions of heat vs. alkaline activation, as well as the contaminant removal efficiency, increased with ISS amendment CaO content. Combined treatment altered the soil physicochemical properties, and significantly increased Ca and S contents. Activated persulfate-related reactions did not negatively impact unconfined compressive strength and hydraulic conductivity. This work improves the selection of persulfate activation methods for the treatment of soils co-contaminated with both potentially toxic metals and organic pollutants.

Suggested Citation

  • Yan Ma & Zhenhai Liu & Yanqiu Xu & Shengkun Zhou & Yi Wu & Jin Wang & Zhanbin Huang & Yi Shi, 2018. "Remediating Potentially Toxic Metal and Organic Co-Contamination of Soil by Combining In Situ Solidification/Stabilization and Chemical Oxidation: Efficacy, Mechanism, and Evaluation," IJERPH, MDPI, vol. 15(11), pages 1-19, November.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:11:p:2595-:d:184266
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1660-4601/15/11/2595/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1660-4601/15/11/2595/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Massimiliano Fabbricino & Alberto Ferraro & Vincenzo Luongo & Ludovico Pontoni & Marco Race, 2018. "Soil Washing Optimization, Recycling of the Solution, and Ecotoxicity Assessment for the Remediation of Pb-Contaminated Sites Using EDDS," Sustainability, MDPI, vol. 10(3), pages 1-12, February.
    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. Yaxuan Gao & Wenran Gao & Haonan Zhu & Haoran Chen & Shanshan Yan & Ming Zhao & Hongqi Sun & Junjie Zhang & Shu Zhang, 2022. "A Review on N-Doped Biochar for Oxidative Degradation of Organic Contaminants in Wastewater by Persulfate Activation," IJERPH, MDPI, vol. 19(22), pages 1-25, November.
    2. Geng Li & Haibo Li & Yinghua Li & Xi Chen & Xinjing Li & Lixin Wang & Wenxin Zhang & Ying Zhou, 2022. "Stabilization/Solidification of Heavy Metals and PHe Contaminated Soil with β-Cyclodextrin Modified Biochar (β-CD-BC) and Portland Cement," IJERPH, MDPI, vol. 19(3), pages 1-18, 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. Mariusz Z. Gusiatin & Sylwia Pasieczna-Patkowska & Magdaléna Bálintová & Marcin Kuśmierz, 2023. "Treatment of Wastewater from Soil Washing with Soluble Humic Substances Using Biochars and Activated Carbon," Energies, MDPI, vol. 16(11), pages 1-31, May.
    2. Marco Race & Alberto Ferraro & Massimiliano Fabbricino & Agostino La Marca & Antonio Panico & Danilo Spasiano & Alice Tognacchini & Francesco Pirozzi, 2018. "Ethylenediamine- N , N ′-Disuccinic Acid (EDDS)—Enhanced Flushing Optimization for Contaminated Agricultural Soil Remediation and Assessment of Prospective Cu and Zn Transport," IJERPH, MDPI, vol. 15(3), pages 1-13, March.
    3. Parviz Heidari & Antonio Panico, 2020. "Sorption Mechanism and Optimization Study for the Bioremediation of Pb(II) and Cd(II) Contamination by Two Novel Isolated Strains Q3 and Q5 of Bacillus sp," IJERPH, MDPI, vol. 17(11), pages 1-20, June.

    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:jijerp:v:15:y:2018:i:11:p:2595-:d:184266. 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.