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<p>Uranium recovery from seawater offers a sustainable solution for long-term nuclear fuel supply. A novel silica and chitosan synergistically modified biochar composite (OBC-Si-CS) with antibacterial properties was developed for efficient and selective uranium(VI) adsorption from natural seawater. The material exhibited a high adsorption capacity, excellent reusability, and significant selectivity for uranium, while resisting interference from common metal ions and rare earth elements. OBC-Si-CS demonstrated a 100% inhibition rate against <i>V. parahaemolyticus</i> and <i>V. vulnificus</i>, and showed promising adsorption performance in dynamic tests with low-concentration uranium-spiked seawater, offering significant potential for large-scale uranium extraction from marine environments.</p>

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Silica and chitosan synergistically modified biochar composite with excellent antibacterial activity for efficient and selective U (VI) adsorption from seawater

  • 期刊论文

  • 发表日期：

    2026年2月26日

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  • Long-Hua Zhou,
  • Xin-Chen Lin,
  • Shan Du,
  • Hui Li,
  • Yong-Jiu Jin,
  • Zong-Bo Xie,
  • Zhang-Gao Le

摘要

Uranium recovery from seawater offers a sustainable solution for long-term nuclear fuel supply. A novel silica and chitosan synergistically modified biochar composite (OBC-Si-CS) with antibacterial properties was developed for efficient and selective uranium(VI) adsorption from natural seawater. The material exhibited a high adsorption capacity, excellent reusability, and significant selectivity for uranium, while resisting interference from common metal ions and rare earth elements. OBC-Si-CS demonstrated a 100% inhibition rate against V. parahaemolyticus and V. vulnificus, and showed promising adsorption performance in dynamic tests with low-concentration uranium-spiked seawater, offering significant potential for large-scale uranium extraction from marine environments.