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Preparation of Special Wettability Quartz Sand Filter Media and Its Synchronous Oil/Water Mixture Separation and Dye Adsorption

Author

Listed:
  • Che Yinglong

    (School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China)

  • Guo Hanyue

    (School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
    Jiangxi Architectural Design and Research Institute Group Co., Ltd., Nanchang 330046, China)

  • Man Shide

    (School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China)

  • Zhang Tingting

    (School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
    Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou 730070, China)

  • Wei Bigui

    (School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
    Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou 730070, China)

Abstract

To efficiently and synchronously separate oil/water mixture and adsorbed dyes, corn-cob-covered quartz sand (CCQS) filter media with underwater superoleophobic qualities and underoil extremely hydrophobic qualities were fabricated by grafting a corn cob onto the surface of quartz sand using the dip-coating technique. Due to the introduction of more hydrogen bonds on the quartz surface and the construction of a rough structure, the underwater oil contact angles and underoil water contact angles of the CCQS were 150.3~154.6° and 132.2°~154.6°, respectively. A separator for oil/water separation was devised, and the CCQS-filled separator could synchronously separate the oil/water mixture and adsorb malachite green. The separation efficiency of the oil/water mixture was over 99.93%, the removal rate of MG was 99.73%, and the adsorption capacity was 7.28 mg/g. The CCQS could keep its wettability steady under challenging environmental circumstances. Therefore, the study offered a novel concept for the successful oil/water mixture separation, while synchronously adsorbing dye.

Suggested Citation

  • Che Yinglong & Guo Hanyue & Man Shide & Zhang Tingting & Wei Bigui, 2022. "Preparation of Special Wettability Quartz Sand Filter Media and Its Synchronous Oil/Water Mixture Separation and Dye Adsorption," Sustainability, MDPI, vol. 14(16), pages 1-14, August.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:16:p:9860-:d:884630
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