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<p>Efficient uranium extraction from sandstone ores is essential for nuclear energy sustainability. This study develops a novel dual-oxidant leaching system using KMnO₄ (0.01&#xa0;g) and NaClO (1&#xa0;mL) in H₂SO₄ (pH 1.5) that achieves 98.37% uranium recovery under ambient conditions. The optimized process demonstrates 25–40% higher efficiency than single-oxidant systems while reducing chemical consumption by 35%. Comprehensive characterization (XRD, SEM–EDS, BET, XPS) confirms complete U<sup>4</sup>⁺ → U⁶⁺ conversion and reveals enhanced pore accessibility. This energy-efficient method offers superior uranium extraction without intensive conditions, presenting an environmentally and economically viable solution for sandstone uranium processing. The findings establish a sustainable framework for high-yield uranium recovery with industrial application potential.</p> Graphical abstract <p></p>

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Efficient synergistic leaching of sandstone uranium ores with dual oxidants combination

  • 期刊论文

  • 发表日期：

    2025年7月23日

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  • Khan Muhammad Yaruq Ali,
  • Xu Zhao,
  • Rida Fatima,
  • Muhammad Nasir Qurashi,
  • Zhiwu Lei,
  • Yucheng Su,
  • Hongqiang Wang,
  • Eming Hu,
  • Fang Hu,
  • Qingliang Wang

摘要

Efficient uranium extraction from sandstone ores is essential for nuclear energy sustainability. This study develops a novel dual-oxidant leaching system using KMnO₄ (0.01 g) and NaClO (1 mL) in H₂SO₄ (pH 1.5) that achieves 98.37% uranium recovery under ambient conditions. The optimized process demonstrates 25–40% higher efficiency than single-oxidant systems while reducing chemical consumption by 35%. Comprehensive characterization (XRD, SEM–EDS, BET, XPS) confirms complete U4⁺ → U⁶⁺ conversion and reveals enhanced pore accessibility. This energy-efficient method offers superior uranium extraction without intensive conditions, presenting an environmentally and economically viable solution for sandstone uranium processing. The findings establish a sustainable framework for high-yield uranium recovery with industrial application potential.

Graphical abstract