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<p>An efficient sodium phosphate-doped silica gel nanocomposites (SG-SDP) material was successfully produced and used to collect uranyl ions from an aqueous solution via batch sorption. The nanocomposite was characterized using ATR-FTIR, SEM, XPS, and XRD techniques, and its thermal stability was determined with TGA. The efficiency of SG-SDP to capture uranyl ions was evaluated using a variety of factors, including temperature (<i>T</i>), pH, contact time (<i>t</i>), and initial concentration (<i>C</i><sub><i>i</i></sub>). Under particular conditions (<i>p</i>H = 2, <i>C</i><sub><i>i</i></sub> = 1.0&#xa0;mg&#xa0;L<sup>−1</sup>, <i>T</i> = 55&#xa0;°C, 80&#xa0;rpm, and dosage = 2&#xa0;g&#xa0;L<sup>−1</sup>), sorption equilibrium is reached in 40&#xa0;min, resulting in the greatest elimination percentage of 90%. The binding of U(VI) ions conformed to the Langmuir isotherm model (<i>R</i><sup>2</sup> &gt; 0.999), and the interaction followed a pseudo-second-order kinetic model (<i>R</i><sup>2</sup> &gt; 0.999). These positive results indicate that the SG-SDP nanocomposite material can be used effectively to remove diluted uranium (VI) ions from water.</p>

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Phosphate-doped silica gel nanocomposites for effective uranium ion remediation from water

  • 期刊论文

  • 发表日期：

    2025年1月23日

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  • Mohammed A. Al-Anber,
  • Idrees F. Al-Momani,
  • Ahmed K. Hijazi,
  • Suresh Sagadevan,
  • Neda’a Al-Adaileh,
  • Hannen Daoud,
  • Mohammad M. Allaham,
  • Dinara Sobola

摘要

An efficient sodium phosphate-doped silica gel nanocomposites (SG-SDP) material was successfully produced and used to collect uranyl ions from an aqueous solution via batch sorption. The nanocomposite was characterized using ATR-FTIR, SEM, XPS, and XRD techniques, and its thermal stability was determined with TGA. The efficiency of SG-SDP to capture uranyl ions was evaluated using a variety of factors, including temperature (T), pH, contact time (t), and initial concentration (Ci). Under particular conditions (pH = 2, Ci = 1.0 mg L−1, T = 55 °C, 80 rpm, and dosage = 2 g L−1), sorption equilibrium is reached in 40 min, resulting in the greatest elimination percentage of 90%. The binding of U(VI) ions conformed to the Langmuir isotherm model (R2 > 0.999), and the interaction followed a pseudo-second-order kinetic model (R2 > 0.999). These positive results indicate that the SG-SDP nanocomposite material can be used effectively to remove diluted uranium (VI) ions from water.