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<p>The global advancement of nuclear technology has led to the generation of radioactive waste, with strontium-90 (<sup>90</sup>Sr) being one of the most hazardous radionuclides due to its high solubility, mobility, and bioaccumulation. Owing to its similarity to calcium, it can replace calcium in the human body, causing serious health effects. A starch/2-hydroxyethyl methacrylate/bismuth (starch/HEMA/Bi) nanocomposite was synthesized via gamma irradiation for Sr(II) adsorption from simulated radioactive waste. Characterized by FTIR, XPS, SEM, TGA, and XRD, the nanocomposite achieved over 90% Sr(II) removal at pH 6 within 90&#xa0;min, proving its efficiency from operational, isotherm, kinetic, and thermodynamic perspectives.</p>

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Adsorption of strontium ions from aqueous solutions using radiation synthesized starch /2-hydroxyethylmethacrylate/bismuth nanocomposite

  • 期刊论文

  • 发表日期：

    2026年1月8日

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  • Esraa A. Alshafei,
  • M. Abdel Geleel,
  • Ghada A. Mahmoud,
  • Nagwa A. Badway,
  • Samia A. Abo Farha

摘要

The global advancement of nuclear technology has led to the generation of radioactive waste, with strontium-90 (90Sr) being one of the most hazardous radionuclides due to its high solubility, mobility, and bioaccumulation. Owing to its similarity to calcium, it can replace calcium in the human body, causing serious health effects. A starch/2-hydroxyethyl methacrylate/bismuth (starch/HEMA/Bi) nanocomposite was synthesized via gamma irradiation for Sr(II) adsorption from simulated radioactive waste. Characterized by FTIR, XPS, SEM, TGA, and XRD, the nanocomposite achieved over 90% Sr(II) removal at pH 6 within 90 min, proving its efficiency from operational, isotherm, kinetic, and thermodynamic perspectives.