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<p>This study investigates oak charcoal (OC) for removing Th(IV) and U(VI) from aqueous solutions. Comprehensive characterization and batch experiments showed OC possesses high adsorption capacities of 165.9&#xa0;mg&#xa0;g<sup>−1</sup> for Th(IV) and 77.64&#xa0;mg&#xa0;g<sup>−1</sup> for U(VI) under optimal conditions (pH 4, 10&#xa0;mg dosage, 25&#xa0;°C). Adsorption followed pseudo-second-order kinetics and fit multiple isotherm models. Thermodynamic analysis confirmed spontaneous, exothermic adsorption. Effective regeneration potential was demonstrated using 0.1&#xa0;M HNO₃, yielding high desorption efficiencies, achieving 78.90% for U(VI) and 85.00% for Th(IV). Findings highlight OC as a novel, efficient, eco-friendly adsorbent with significant potential for environmental remediation applications.</p>

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Innovative study on the removal of thorium(IV) and Uranium(VI) ions from aqueous solutions via oak-derived charcoal: kinetic analysis and adsorptive performance

  • 期刊论文

  • 发表日期：

    2025年6月3日

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  • Hebah Musa,
  • Omar Alnasra,
  • Fawwaz Khalili

摘要

This study investigates oak charcoal (OC) for removing Th(IV) and U(VI) from aqueous solutions. Comprehensive characterization and batch experiments showed OC possesses high adsorption capacities of 165.9 mg g−1 for Th(IV) and 77.64 mg g−1 for U(VI) under optimal conditions (pH 4, 10 mg dosage, 25 °C). Adsorption followed pseudo-second-order kinetics and fit multiple isotherm models. Thermodynamic analysis confirmed spontaneous, exothermic adsorption. Effective regeneration potential was demonstrated using 0.1 M HNO₃, yielding high desorption efficiencies, achieving 78.90% for U(VI) and 85.00% for Th(IV). Findings highlight OC as a novel, efficient, eco-friendly adsorbent with significant potential for environmental remediation applications.