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<p>Organic pollution is a major environmental issue that requires the deployment of steps to lower the organic content of water. In this study, Glycidyl methacrylate (GMA) functionalized Zr-MOF was fabricated and employed as a selective adsorbent in PW to reduce COD level. XRD, EDX, BET, PSA and FT-IR were employed to investigate the properties of the synthesized MOF. The synthesized MOF has an enormous surface area of 1144 m<sup>2/</sup>g, a mean pore diameter of 2.84&#xa0;nm, and an overall pore volume of 0.37 cm<sup>3</sup>/g. Investigating the effects of pH (2–12), contact time (10–120&#xa0;min), and adsorbent dose (0-2000&#xa0;mg/L) on COD % removal allowed us to assess the effectiveness of UiO-66-GMA. The results demonstrated that at pH 8 and a 500&#xa0;mg/L dose of MOF, COD removal efficiency increased from 35.2 to 94.67%. Additionally, as contact time was extended from 10 to 50&#xa0;min, the removal efficiency improved from 52.78 to 92.4%. Adsorption isotherm analysis revealed that the pseudo-second-order kinetic and Freundlich isothermal models provided a very good match to the adsorption data (R<sup>2</sup> = 0.98). A maximum COD removal efficiency of 96.12% was reported. Based on the current research, it is feasible to draw the conclusion that Zr-functionalized MOFs are an efficient adsorbent for the adsorption of organic contaminants.</p>

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Insight into recent advances of post synthetically modified Zr-basedMOF for the treatment of high COD produced water

  • 期刊论文

  • 发表日期：

    2025年4月22日

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  • Humaira Gul Zaman,
  • Lavania Baloo,
  • Puganeshwary Palaniandy,
  • Mohd Remy Rozainy Mohd Arif Zainol

摘要

Organic pollution is a major environmental issue that requires the deployment of steps to lower the organic content of water. In this study, Glycidyl methacrylate (GMA) functionalized Zr-MOF was fabricated and employed as a selective adsorbent in PW to reduce COD level. XRD, EDX, BET, PSA and FT-IR were employed to investigate the properties of the synthesized MOF. The synthesized MOF has an enormous surface area of 1144 m2/g, a mean pore diameter of 2.84 nm, and an overall pore volume of 0.37 cm3/g. Investigating the effects of pH (2–12), contact time (10–120 min), and adsorbent dose (0-2000 mg/L) on COD % removal allowed us to assess the effectiveness of UiO-66-GMA. The results demonstrated that at pH 8 and a 500 mg/L dose of MOF, COD removal efficiency increased from 35.2 to 94.67%. Additionally, as contact time was extended from 10 to 50 min, the removal efficiency improved from 52.78 to 92.4%. Adsorption isotherm analysis revealed that the pseudo-second-order kinetic and Freundlich isothermal models provided a very good match to the adsorption data (R2 = 0.98). A maximum COD removal efficiency of 96.12% was reported. Based on the current research, it is feasible to draw the conclusion that Zr-functionalized MOFs are an efficient adsorbent for the adsorption of organic contaminants.