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<p>Thermodynamic and experimental approaches were used to examine the stable phases, chlorination, and evaporation of chloride products during carbonization–chlorination decontamination of Cs- and Co-contaminated ion-exchange resins. Cs<sub>2</sub>SO<sub>4</sub> was the stable phase for Cs under carbonization at 800&#xa0;°C. Chlorination at 1000&#xa0;°C for 30&#xa0;min resulted in conversion and evaporation ratios of 0.925 and 0.314, respectively. Residual CsCl was completely removed by an additional heat treatment. For Co, Co<sub>3</sub>O<sub>4</sub> was the primary carbonization product. At 900 and 1000&#xa0;°C, only CoO was detected. Chlorination at 1000&#xa0;°C led to conversion and evaporation ratios of 0.701 and 1.00, respectively.</p>

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Thermodynamic and experimental investigation of carbonization–chlorination decontamination of Cs- and Co-contaminated spent ion-exchange resins

  • 期刊论文

  • 发表日期：

    2025年10月11日

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  • Min Ku Jeon,
  • Junhyuk Jang,
  • Sungjune Sohn

摘要

Thermodynamic and experimental approaches were used to examine the stable phases, chlorination, and evaporation of chloride products during carbonization–chlorination decontamination of Cs- and Co-contaminated ion-exchange resins. Cs2SO4 was the stable phase for Cs under carbonization at 800 °C. Chlorination at 1000 °C for 30 min resulted in conversion and evaporation ratios of 0.925 and 0.314, respectively. Residual CsCl was completely removed by an additional heat treatment. For Co, Co3O4 was the primary carbonization product. At 900 and 1000 °C, only CoO was detected. Chlorination at 1000 °C led to conversion and evaporation ratios of 0.701 and 1.00, respectively.