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<p>Natural humic acid (NHAnps) was successfully incorporated into the structure of sodium cobalt hexacyanoferrate (Na-CoHCF-II) nanoparticles to prepare a new NHAnps/Na-CoHCF(II) composite. This is achieved using a simple co-precipitation approach. XRD, FTIR, TG-DTA, and SEM are used to define NHA/Na-CoHCF(II). NHAnps/Na-CoHCF(II) has a face centered cubic framework comprised eight sub-cubic structures and nanometers in size with surface area of 12.42&#xa0;m²/g and a pore width of about 31.04&#xa0;nm. The effects of pH, shaking time, and initial metal ion concentration on the adsorption of <sup>134</sup>Cs and <sup>60</sup>Co were rated. According to kinetic data, the pseudo-1st- and pseudo-2nd-order kinetic models fit the experimental outcome. Non-linear Langmuir and Sips isotherm models were fitted to the experimental data. The maximum adsorption capacity for NHA/Na-CoHCF(II) and Na-CoHCF(II) reaches about 41.6/32.4&#xa0;mg g⁻¹ and 16.7/4.28&#xa0;mg g⁻¹ for <sup>134</sup>Cs/<sup>60</sup>Co, respectively. According to thermodynamic parameters, the reaction is spontaneous and endothermic, and the irregularities increased at the solid-solution interface. The removal efficiency of <sup>134</sup>Cs(I) was greater than 93% when other mono-, di-, and tri-interfering metal ions were present in the liquid waste. Lastly, for the treatment of radioactive liquid waste, particularly that which contains cesium radionuclides, the NHA/Na-CoHCF-II composite is a practical adsorbent.</p>

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Sequestration of 134Cs and 60Co from Radioactive Solution with Novel Metal-Organic Framework-Based Materials: Kinetic, Isotherms, and Thermodynamic Studies

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月25日

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  • D. M. Imam,
  • M. A. Youssef

摘要

Natural humic acid (NHAnps) was successfully incorporated into the structure of sodium cobalt hexacyanoferrate (Na-CoHCF-II) nanoparticles to prepare a new NHAnps/Na-CoHCF(II) composite. This is achieved using a simple co-precipitation approach. XRD, FTIR, TG-DTA, and SEM are used to define NHA/Na-CoHCF(II). NHAnps/Na-CoHCF(II) has a face centered cubic framework comprised eight sub-cubic structures and nanometers in size with surface area of 12.42 m²/g and a pore width of about 31.04 nm. The effects of pH, shaking time, and initial metal ion concentration on the adsorption of 134Cs and 60Co were rated. According to kinetic data, the pseudo-1st- and pseudo-2nd-order kinetic models fit the experimental outcome. Non-linear Langmuir and Sips isotherm models were fitted to the experimental data. The maximum adsorption capacity for NHA/Na-CoHCF(II) and Na-CoHCF(II) reaches about 41.6/32.4 mg g⁻¹ and 16.7/4.28 mg g⁻¹ for 134Cs/60Co, respectively. According to thermodynamic parameters, the reaction is spontaneous and endothermic, and the irregularities increased at the solid-solution interface. The removal efficiency of 134Cs(I) was greater than 93% when other mono-, di-, and tri-interfering metal ions were present in the liquid waste. Lastly, for the treatment of radioactive liquid waste, particularly that which contains cesium radionuclides, the NHA/Na-CoHCF-II composite is a practical adsorbent.