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<p>To enhance the value of waste rock wool, this work prepared nano-zero-valent nickel (nZVNi) loaded on rock wool (RW) by liquid phase reduction method. Characterization results show that the surface of the material is fluffy and doped with zero-valent nickel particles. RW@nZVNi follows pseudo-second-order adsorption and reduction kinetics, indicating that RW@nZVNi exhibits both adsorption and reduction in the removal of U(VI). In addition, the adsorption process of RW@nZVNi fits the Langmuir model, suggesting monolayer adsorption. The maximum adsorption capacity was 193.42&#xa0;mg&#xa0;g<sup>−1</sup>.The uranium removal process by RW@nZVNi is endothermic, entropy-increasing, and spontaneous. The findings of this study provide valuable insights into the value-added utilization of waste rock wool.</p>

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Turning waste into treasure: RW@nZVNi with bifunctional properties efficiently removes U(VI) from water

  • 期刊论文

  • 发表日期：

    2025年12月23日

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  • Jingyi Sun,
  • Yishuo Zhang,
  • Lingling Peng,
  • Guofeng Wang,
  • Muhammad Saeed,
  • Xiaoyan Li

摘要

To enhance the value of waste rock wool, this work prepared nano-zero-valent nickel (nZVNi) loaded on rock wool (RW) by liquid phase reduction method. Characterization results show that the surface of the material is fluffy and doped with zero-valent nickel particles. RW@nZVNi follows pseudo-second-order adsorption and reduction kinetics, indicating that RW@nZVNi exhibits both adsorption and reduction in the removal of U(VI). In addition, the adsorption process of RW@nZVNi fits the Langmuir model, suggesting monolayer adsorption. The maximum adsorption capacity was 193.42 mg g−1.The uranium removal process by RW@nZVNi is endothermic, entropy-increasing, and spontaneous. The findings of this study provide valuable insights into the value-added utilization of waste rock wool.