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The Removal and Mitigation Effects of Biochar on Microplastics in Water and Soils: Application and Mechanism Analysis

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  • Wenxin Li

    (School of Energy and Environmental Engineering, University of Science & Technology Beijing, Beijing 100083, China
    Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science & Technology Beijing, Beijing 100083, China)

  • Yi Xing

    (School of Energy and Environmental Engineering, University of Science & Technology Beijing, Beijing 100083, China
    Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science & Technology Beijing, Beijing 100083, China)

  • Ying Guo

    (School of Energy and Environmental Engineering, University of Science & Technology Beijing, Beijing 100083, China
    Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science & Technology Beijing, Beijing 100083, China)

  • Duo Zhang

    (School of Energy and Environmental Engineering, University of Science & Technology Beijing, Beijing 100083, China
    Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science & Technology Beijing, Beijing 100083, China)

  • Yajuan Tang

    (School of Energy and Environmental Engineering, University of Science & Technology Beijing, Beijing 100083, China
    Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science & Technology Beijing, Beijing 100083, China)

  • Jiayu Chen

    (School of Energy and Environmental Engineering, University of Science & Technology Beijing, Beijing 100083, China
    Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science & Technology Beijing, Beijing 100083, China)

  • Han Zhang

    (School of Energy and Environmental Engineering, University of Science & Technology Beijing, Beijing 100083, China
    Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science & Technology Beijing, Beijing 100083, China)

  • Bo Jiang

    (School of Energy and Environmental Engineering, University of Science & Technology Beijing, Beijing 100083, China
    Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science & Technology Beijing, Beijing 100083, China
    National Engineering Laboratory for Site Remediation Technologies, Beijing 100015, China)

Abstract

Due to their widespread distribution, microplastics (MPs) are endangering the soil ecological environment system, causing water pollution and altering the soil’s physicochemical and microbiological features. Because of its unique pore structure and strong stability, biochar is widely used as an adsorbent. However, the effects of MP–biochar interactions in water and soil environment are still unclear. This review outlines the application and mechanism of biochar as an adsorbent in a water environment for the removal of MPs. Also, biochar serves as remediation material for MPs in soils as it mitigates the adverse effects of MPs on soil properties, enzyme activities and soil microbial community. It was found that woody biochar had the highest yield and was more effective in adsorbing MPs. Further research should focus on the combined effects of biochar and MPs, the environmental risks of biochar, the modification of biochar application of MP-removal technologies, the characterization of MP properties, the remediation of combined contamination of MPs and other pollutants, and the transportation of MPs.

Suggested Citation

  • Wenxin Li & Yi Xing & Ying Guo & Duo Zhang & Yajuan Tang & Jiayu Chen & Han Zhang & Bo Jiang, 2024. "The Removal and Mitigation Effects of Biochar on Microplastics in Water and Soils: Application and Mechanism Analysis," Sustainability, MDPI, vol. 16(22), pages 1-19, November.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:22:p:9749-:d:1516759
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    References listed on IDEAS

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    1. Mingying Dong & Lizhi He & Mengyuan Jiang & Yi Zhu & Jie Wang & Williamson Gustave & Shuo Wang & Yun Deng & Xiaokai Zhang & Zhenyu Wang, 2023. "Biochar for the Removal of Emerging Pollutants from Aquatic Systems: A Review," IJERPH, MDPI, vol. 20(3), pages 1-18, January.
    2. Kambo, Harpreet Singh & Dutta, Animesh, 2015. "A comparative review of biochar and hydrochar in terms of production, physico-chemical properties and applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 45(C), pages 359-378.
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