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<p>Due to the significant amount of water used in wet textile coloration processing, wastewater treatment poses a significant environmental problem of the high colored effluent. In this study, acrylic fibre waste was spun with different concentrations of natural sodium bentonite clay (BC) utilizing solution blow spinning method to yield polyacrylonitrile/clay composite nanofibre-based adsorbents. The prepared PAN/BC composite nanofibres were identified using SEM, EDX, and FTIR analyses. SEM images revealed the average diameters of the PAN/BC composite nanofibers produced were below 1&#xa0;μm. EDX confirmed the presence and distribution of key elements within the fibres, indicating successful incorporation of BC. The adsorption process of a model cationic dye, Basic Blue 62 (BB62) onto the prepared adsorbents from aqueous solutions with respect to the BC concentrations, pH, temperature, contact times and dye concentrations was examined. The composite nanofibers exhibited a high adsorption capacity for removing BB62 from aqueous waste solutions, with approximate efficiency of 675&#xa0;mg/g as the dye concentration increased from 100 to 800&#xa0;mg/L. Freundlich isotherm model was best represented by the data of the adsorption equilibrium, indicating a heterogeneous surface and multilayer adsorption behavior.</p>

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Solution blow spinning of composite nanofibres from acrylic fibres waste and natural clay for cationic dye adsorption

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月3日

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  • Hany Kafafy,
  • Lamiaa El-Gabry,
  • Hamada Mashaly,
  • Amira Abou El-Kheir,
  • Tamer Hamouda,
  • Guocheng Zhu,
  • Dongming Qi,
  • Yehya A. Youssef

摘要

Due to the significant amount of water used in wet textile coloration processing, wastewater treatment poses a significant environmental problem of the high colored effluent. In this study, acrylic fibre waste was spun with different concentrations of natural sodium bentonite clay (BC) utilizing solution blow spinning method to yield polyacrylonitrile/clay composite nanofibre-based adsorbents. The prepared PAN/BC composite nanofibres were identified using SEM, EDX, and FTIR analyses. SEM images revealed the average diameters of the PAN/BC composite nanofibers produced were below 1 μm. EDX confirmed the presence and distribution of key elements within the fibres, indicating successful incorporation of BC. The adsorption process of a model cationic dye, Basic Blue 62 (BB62) onto the prepared adsorbents from aqueous solutions with respect to the BC concentrations, pH, temperature, contact times and dye concentrations was examined. The composite nanofibers exhibited a high adsorption capacity for removing BB62 from aqueous waste solutions, with approximate efficiency of 675 mg/g as the dye concentration increased from 100 to 800 mg/L. Freundlich isotherm model was best represented by the data of the adsorption equilibrium, indicating a heterogeneous surface and multilayer adsorption behavior.