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Sepiolite-Based Adsorbents for the Removal of Potentially Toxic Elements from Water: A Strategic Review for the Case of Environmental Contamination in Hunan, China

Author

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  • Zhenghua Wang

    (Hunan Provincial Key Laboratory of Shale Gas Resource Exploitation, Hunan University of Science & Technology, Xiangtan 411201, China
    School of Civil Engineering, Hunan University of Science & Technology, Xiangtan 411201, China)

  • Lina Liao

    (School of Civil Engineering, Hunan University of Science & Technology, Xiangtan 411201, China)

  • Andrew Hursthouse

    (Hunan Provincial Key Laboratory of Shale Gas Resource Exploitation, Hunan University of Science & Technology, Xiangtan 411201, China
    School of Computing, Engineering & Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK)

  • Na Song

    (School of Computing, Engineering & Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK)

  • Bozhi Ren

    (Hunan Provincial Key Laboratory of Shale Gas Resource Exploitation, Hunan University of Science & Technology, Xiangtan 411201, China
    School of Civil Engineering, Hunan University of Science & Technology, Xiangtan 411201, China)

Abstract

The last few decades have seen rapid industrialization and urban development in many regions globally; with associated pollution by potentially toxic elements; which have become a threat to human health and the food chain. This is particularly prevalent in a number of regions in China that host multiple mineral resources and are important agricultural locations. Solutions to protect contamination of the food chain are more effective and sustainable if locally sourced materials are available; and in this context; we review the potential of local (sepiolite) mineral deposits to treat water contamination in the Hunan Municipality; central south China; widely recognized for significant environmental pollution issues (particularly by Hg; Cd; Pb; and Cr) and the high agricultural productivity of the region. Sepiolite is an abundant fibrous clay mineral with modest to good adsorption properties and extensive industrial process applications. It shows reasonable performance as an adsorbent for element removal. In addition; a number of surface modification strategies are available that improve this capability. We review these studies; focused on sorption reaction mechanisms and regeneration potential; with a view to present options for a localized and effective economic strategy for future application.

Suggested Citation

  • Zhenghua Wang & Lina Liao & Andrew Hursthouse & Na Song & Bozhi Ren, 2018. "Sepiolite-Based Adsorbents for the Removal of Potentially Toxic Elements from Water: A Strategic Review for the Case of Environmental Contamination in Hunan, China," IJERPH, MDPI, vol. 15(8), pages 1-15, August.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:8:p:1653-:d:161881
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    Citations

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    Cited by:

    1. Chenglin Yuan & Siqi Liang & Xiaohong Wu & Taimoor Hassan Farooq & Tingting Liu & Yu Hu & Guangjun Wang & Jun Wang & Wende Yan, 2022. "Land Use Changes Influence the Soil Enzymatic Activity and Nutrient Status in the Polluted Taojia River Basin in Sub-Tropical China," IJERPH, MDPI, vol. 19(21), pages 1-10, October.
    2. Jian Yu & Wenting He & Bin Liu, 2020. "Adsorption of Acid Orange Ⅱ with Two Step Modified Sepiolite: Optimization, Adsorption Performance, Kinetics, Thermodynamics and Regeneration," IJERPH, MDPI, vol. 17(5), pages 1-14, March.
    3. Zhendong He & Bozhi Ren & Andrew Hursthouse & Zhenghua Wang, 2020. "Efficient Removal of Cd(II) Using SiO 2 -Mg(OH) 2 Nanocomposites Derived from Sepiolite," IJERPH, MDPI, vol. 17(7), pages 1-12, March.
    4. Jian Yu & Lirong Zhang & Bin Liu, 2019. "Adsorption of Malachite Green with Sodium Dodecylbenzene Sulfonate Modified Sepiolite: Characterization, Adsorption Performance and Regeneration," IJERPH, MDPI, vol. 16(18), pages 1-14, September.

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