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<p>The presence of dyes in water bodies has become a significant concern in recent years. In this study, a magnetic nanocomposite synthesized from activated carbon (AC) and Fe<sub>3</sub>O<sub>4</sub> nanoparticles (AC/FeO) was employed as an adsorbent to remove janus green (JG) and safranin-O (SO) dyes. The AC/FeO nanocomposite had particle sizes smaller than 100 nm. The specific surface area, pore size, and pore volume average of the AC/FeO nanocomposite were 329.56&#xa0;m<sup>2</sup>&#xa0;g<sup>−1</sup>, 3.67&#xa0;nm, and 0.289&#xa0;cm<sup>3</sup>&#xa0;g<sup>−1</sup>, respectively. The pH<sub>pzc</sub> of AC/FeO magnetic nanocomposite was found to be 5.3. Optimal conditions for removal were determined to be a dye concentration of 20&#xa0;mg L<sup>−1</sup>, a sonication time of 18 min, a nanocomposite dosage of 0.023&#xa0;g, and a pH of 7. The AC/FeO nanocomposite exhibited excellent adsorption performance, achieving removal efficiencies of 95.79% and 97.60% for JG and SO, respectively. Moreover, the magnetic nanocomposite demonstrated good reusability, making it a promising candidate for removing JG and SO dyes from aqueous solutions. The AC/FeO nanocomposite was used to remove JG and SO from different environmental water samples, and the removal efficiency was obtained in the range of 87.65–94.81%. Overall, this study highlights the potential of the AC/FeO magnetic adsorbent, as an effective adsorbent for removing JG and SO dyes from water, which could have significant implications for water treatment and environmental protection.</p>

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Application of response surface methodology for modeling adsorption of janus green and safranin-O on magnetic nanocomposite from aqueous solutions

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年8月25日

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  • Irfan Ahmad,
  • Dilshad A. H. Alhadrawi,
  • Bhavesh Kanabar,
  • T. Ramachandran,
  • Haider Radhi Saud,
  • Aman Shankhyan,
  • A. Karthikeyan,
  • Dhirendra Nath Thatoi

摘要

The presence of dyes in water bodies has become a significant concern in recent years. In this study, a magnetic nanocomposite synthesized from activated carbon (AC) and Fe3O4 nanoparticles (AC/FeO) was employed as an adsorbent to remove janus green (JG) and safranin-O (SO) dyes. The AC/FeO nanocomposite had particle sizes smaller than 100 nm. The specific surface area, pore size, and pore volume average of the AC/FeO nanocomposite were 329.56 m2 g−1, 3.67 nm, and 0.289 cm3 g−1, respectively. The pHpzc of AC/FeO magnetic nanocomposite was found to be 5.3. Optimal conditions for removal were determined to be a dye concentration of 20 mg L−1, a sonication time of 18 min, a nanocomposite dosage of 0.023 g, and a pH of 7. The AC/FeO nanocomposite exhibited excellent adsorption performance, achieving removal efficiencies of 95.79% and 97.60% for JG and SO, respectively. Moreover, the magnetic nanocomposite demonstrated good reusability, making it a promising candidate for removing JG and SO dyes from aqueous solutions. The AC/FeO nanocomposite was used to remove JG and SO from different environmental water samples, and the removal efficiency was obtained in the range of 87.65–94.81%. Overall, this study highlights the potential of the AC/FeO magnetic adsorbent, as an effective adsorbent for removing JG and SO dyes from water, which could have significant implications for water treatment and environmental protection.