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<p>The current study involves the synthesis of a composite of chitosan (Ch) and activated carbons (AC) that was derived from Iraqi Keentar date palm seeds, to yield a composite of them (Ch/AC). The composite was synthesized using a simple impregnation–evaporation method. The synthesized composite was then characterized using different techniques such as the XRD technique, SEM, EDX, BET, FTIR and point zero charges (PZC). The adsorption ability of the synthesized materials was conducted by the removal of Bismarck Brown G dye (BBG) from its aqueous solution. Various adsorption parameters were investigated under the applied conditions, including the effects of the three synthesized adsorbent types, adsorption time, temperature, and pH on dye adsorption. The obtained results show that the best removal efficiency of BBG dye over Ch/AC composite was achieved upon using a dose of 0.1&#xa0;g of the synthesized composite at 25&#xa0;°C, and the optimum pH was 5. It was found that the removal efficiency of this dye over the Ch/AC composite was better than that in comparison with each of chitosan and ACs alone under the same adsorption circumstances. The best composite was Ch/AC, which showed remarkable efficiency in removing the BBG dye, achieving up to 99.5% removal at 60&#xa0;min. The pseudo-first order kinetic model describes the adsorption behavior of BBG dye onto the Ch/AC composite. The Freundlich isotherm best fits the adsorption performance of the Ch/AC composite. The study also found that Ch/AC composites were highly recyclable, which made them inexpensive materials with a greater potential for usage in water treatment.</p>

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Fabrication of a chitosan–activated carbon composite and evaluation of its adsorption efficiency for Bismarck Brown G dye removal

  • 期刊论文

  • 发表日期：

    2026年7月1日

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  • Ahmed F. Halbus,
  • Zahraa H. Athab,
  • Bashaer Jawad kahdum,
  • Abbas J. Atiyah,
  • Hussein Idrees Ismael,
  • Khudheyer Jawad Kadem,
  • Rasha M. Jawad,
  • Mubeen Isam

摘要

The current study involves the synthesis of a composite of chitosan (Ch) and activated carbons (AC) that was derived from Iraqi Keentar date palm seeds, to yield a composite of them (Ch/AC). The composite was synthesized using a simple impregnation–evaporation method. The synthesized composite was then characterized using different techniques such as the XRD technique, SEM, EDX, BET, FTIR and point zero charges (PZC). The adsorption ability of the synthesized materials was conducted by the removal of Bismarck Brown G dye (BBG) from its aqueous solution. Various adsorption parameters were investigated under the applied conditions, including the effects of the three synthesized adsorbent types, adsorption time, temperature, and pH on dye adsorption. The obtained results show that the best removal efficiency of BBG dye over Ch/AC composite was achieved upon using a dose of 0.1 g of the synthesized composite at 25 °C, and the optimum pH was 5. It was found that the removal efficiency of this dye over the Ch/AC composite was better than that in comparison with each of chitosan and ACs alone under the same adsorption circumstances. The best composite was Ch/AC, which showed remarkable efficiency in removing the BBG dye, achieving up to 99.5% removal at 60 min. The pseudo-first order kinetic model describes the adsorption behavior of BBG dye onto the Ch/AC composite. The Freundlich isotherm best fits the adsorption performance of the Ch/AC composite. The study also found that Ch/AC composites were highly recyclable, which made them inexpensive materials with a greater potential for usage in water treatment.