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Study of the Kinetics and Equilibrium of the Adsorption of Oils onto Hydrophobic Jute Fiber Modified via the Sol-Gel Method

Author

Listed:
  • Na Lv

    (School of Environmental Science & Safety Engineering, Tianjin University of Technology, Tianjin 300384, China)

  • Xiaoli Wang

    (School of Environmental Science & Safety Engineering, Tianjin University of Technology, Tianjin 300384, China)

  • Shitao Peng

    (School of Environmental Science & Safety Engineering, Tianjin University of Technology, Tianjin 300384, China
    Laboratory of Environmental protection in Water Transport Engineering, Tianjin Research Institute for Water Transport Engineering, Ministry of Transport, Tianjin 300456, China)

  • Huaqin Zhang

    (Laboratory of Environmental protection in Water Transport Engineering, Tianjin Research Institute for Water Transport Engineering, Ministry of Transport, Tianjin 300456, China)

  • Lei Luo

    (School of Environmental Science & Safety Engineering, Tianjin University of Technology, Tianjin 300384, China)

Abstract

A new kind of hydrophobic and oil sorbent based on jute fiber was successfully prepared by the integration of silica onto a fiber surface via the sol-gel method and subsequent hydrophobic modification with octadecyltrichlorosilane (OTS). Compared with the hydrophilic raw fiber, the modified fiber had a water contact angle (CA) of 136.2°, suggesting that the material has good hydrophobicity. Furthermore, the ability of oil in the oil/water system (taking diesel for example) to absorb was revealed by the kinetics, the isotherm equation, and the thermodynamic parameters. Adsorption behavior was kinetically investigated using pseudo first-order and pseudo second-order models. The data mostly correlated with the pseudo first-order model. The equilibrium adsorption at 298 K was assessed by using the Langmuir and Freundlich isotherm models. The Freundlich model had greater consistency with the experimental data. The obtained thermodynamic parameters demonstrate that the adsorption of diesel is spontaneous, favorable, and exothermic.

Suggested Citation

  • Na Lv & Xiaoli Wang & Shitao Peng & Huaqin Zhang & Lei Luo, 2018. "Study of the Kinetics and Equilibrium of the Adsorption of Oils onto Hydrophobic Jute Fiber Modified via the Sol-Gel Method," IJERPH, MDPI, vol. 15(5), pages 1-14, May.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:5:p:969-:d:145981
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