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<p>This study introduces a novel strategy for uranium-contaminated soil remediation by synergizing vertical electrokinetic migration with deep-layer phosphate passivation. The system successfully concentrates uranium at a target depth of 20–25&#xa0;cm and immobilizes it through the formation of stable uranyl phosphate minerals (e.g., autunite). This approach reduced surface soil (0–20&#xa0;cm) uranium leaching to near-background levels and increased the stable residual fraction to over 50%, demonstrating a sustainable solution for the long-term stabilization of deep-layer radioactive contamination.</p>

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Enhanced remediation of uranium-contaminated soil via combined chemical leaching, electrokinetic driving, and phosphate passivation

  • 期刊论文

  • 发表日期：

    2025年11月11日

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  • Zhi-gang Feng,
  • Man Zhou,
  • Chong Huang,
  • Qiang Ma

摘要

This study introduces a novel strategy for uranium-contaminated soil remediation by synergizing vertical electrokinetic migration with deep-layer phosphate passivation. The system successfully concentrates uranium at a target depth of 20–25 cm and immobilizes it through the formation of stable uranyl phosphate minerals (e.g., autunite). This approach reduced surface soil (0–20 cm) uranium leaching to near-background levels and increased the stable residual fraction to over 50%, demonstrating a sustainable solution for the long-term stabilization of deep-layer radioactive contamination.