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<p>MIL-53(Fe) (M53F) MOF nanoparticles are synthesized using the solvothermal method and are employed for the adsorption of 2,4,5-trichlorophenoxy acetic acid (2,4,5-T) as a herbicide from wastewater. Several analytical techniques, including FTIR, XRD, BET, and SEM imaging, are conducted to investigate the properties of these nanoparticles. The exceptional adsorption capacity of M53F (700&#xa0;mg&#xa0;g<sup>−1</sup>) is attributed to its high surface area, abundant active sites, and porous structure, which facilitate strong interactions with 2,4,5-T molecules. Additionally, the material achieves remarkably fast adsorption equilibrium within just 10&#xa0;min, significantly outperforming conventional adsorbents. The kinetics investigation revealed a strong match between the experimental results and both the pseudo-second-order and Boyd models, confirming the adsorption mechanism. Furthermore, the Langmuir, Flory–Huggins, and Dubinin-Radushkevich isotherm models are identified as the most appropriate for describing the adsorption of 2,4,5-T onto M53F. This favorable adsorption behavior is reinforced by a low separation adsorption coefficient (R<sup>L</sup>), indicating a high affinity for the target pollutant. Moreover, this study uniquely explores the influence of real wastewater matrices such as salinity, inorganic ions, and humic acid on adsorption performance. The results reveal a notable negative impact of these matrices, providing critical insights into real-world application challenges. Notably, M53F demonstrates outstanding reusability, retaining high removal efficiency over five adsorption–desorption cycles, underscoring its potential as an efficient, sustainable, and reusable adsorbent for environmental remediation.</p>

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Effective 2,4,5-T Removal from Wastewater Using M53F Adsorbent: Synthesis, Characterization, Kinetics, and Isotherm Investigations

  • 期刊论文

  • 发表日期：

    2025年6月26日

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  • Ahmed Mubarak M.,
  • Reem Mohammed,
  • Osama Abuzalat,
  • Sameh Ahmed Rizk,
  • Atef Samir Darwish,
  • Mohammed Eid M. Ali

摘要

MIL-53(Fe) (M53F) MOF nanoparticles are synthesized using the solvothermal method and are employed for the adsorption of 2,4,5-trichlorophenoxy acetic acid (2,4,5-T) as a herbicide from wastewater. Several analytical techniques, including FTIR, XRD, BET, and SEM imaging, are conducted to investigate the properties of these nanoparticles. The exceptional adsorption capacity of M53F (700 mg g−1) is attributed to its high surface area, abundant active sites, and porous structure, which facilitate strong interactions with 2,4,5-T molecules. Additionally, the material achieves remarkably fast adsorption equilibrium within just 10 min, significantly outperforming conventional adsorbents. The kinetics investigation revealed a strong match between the experimental results and both the pseudo-second-order and Boyd models, confirming the adsorption mechanism. Furthermore, the Langmuir, Flory–Huggins, and Dubinin-Radushkevich isotherm models are identified as the most appropriate for describing the adsorption of 2,4,5-T onto M53F. This favorable adsorption behavior is reinforced by a low separation adsorption coefficient (RL), indicating a high affinity for the target pollutant. Moreover, this study uniquely explores the influence of real wastewater matrices such as salinity, inorganic ions, and humic acid on adsorption performance. The results reveal a notable negative impact of these matrices, providing critical insights into real-world application challenges. Notably, M53F demonstrates outstanding reusability, retaining high removal efficiency over five adsorption–desorption cycles, underscoring its potential as an efficient, sustainable, and reusable adsorbent for environmental remediation.