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<p>Indonesia’s energy independence and net-zero emissions (NZE) goals require sustainable uranium extraction from monazite sand, a tin byproduct. This review evaluates covalent organic frameworks (COFs) for uranium–thorium (U/Th) separation in high-concentration monazite systems. Findings highlight SO<sub>3</sub>H-functionalized COFs, synthesized via dissolution–precipitation and NH<sub>4</sub>OH ammonization, as optimal for U/Th separation, exhibiting high uranium adsorption (&gt; 300&#xa0;mg/g), selectivity, and cost-effectiveness. Their stable porous structures align with Indonesia’s monazite processing needs, addressing nuclear fuel cycle challenges. The study underscores COFs’ potential to support NZE targets and energy security, urging future research on scalability, regeneration, and industrial integration to transition from lab-scale to practical applications.</p>

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Strategic utilization of covalent organic frameworks for uranium adsorption from high concentrate U–Th monazite sand: a review

  • 期刊论文

  • 发表日期：

    2025年5月26日

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  • Ade Saputra,
  • Iman Abdullah,
  • Deliana Dahnum,
  • Deni Mustika,
  • Putra Oktavianto,
  • Ainun Zakiah Noor,
  • Niken Siwi Pamungkas,
  • Muhammad Yusuf

摘要

Indonesia’s energy independence and net-zero emissions (NZE) goals require sustainable uranium extraction from monazite sand, a tin byproduct. This review evaluates covalent organic frameworks (COFs) for uranium–thorium (U/Th) separation in high-concentration monazite systems. Findings highlight SO3H-functionalized COFs, synthesized via dissolution–precipitation and NH4OH ammonization, as optimal for U/Th separation, exhibiting high uranium adsorption (> 300 mg/g), selectivity, and cost-effectiveness. Their stable porous structures align with Indonesia’s monazite processing needs, addressing nuclear fuel cycle challenges. The study underscores COFs’ potential to support NZE targets and energy security, urging future research on scalability, regeneration, and industrial integration to transition from lab-scale to practical applications.