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<p>Treatment of the radioactive waste at Hanford is one of the Department of Energy’s largest environmental clean-up obligations. Liquid waste is processed through cation exchange to remove cesium-137 with crystalline silicotitanate (CST) ion exchanger resin. The impact of sodium concentration on cesium removal with CST has a clear and defined impact on process efficiency. Variations in anions composition suggest a potential correlation with system behavior, although the relationship is not well resolved. A simple analytical equation developed from a suite of simulated supernates varying in hydroxide, nitrate, nitrite, and carbonate content can be used to predict CST ion exchange behavior.</p>

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Impact of anions on the chemical activity of tank waste applied to supernate cesium removal

  • 期刊论文

  • 发表日期：

    2026年1月27日

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  • A. Robb Taylor,
  • Emily L. Campbell,
  • Krusha Bhakta,
  • Austin Bachman,
  • Kyleigh Murray,
  • Abel Zambrano-Ortega,
  • Amy M. Westesen,
  • Steven Biegalski,
  • Reid A. Peterson

摘要

Treatment of the radioactive waste at Hanford is one of the Department of Energy’s largest environmental clean-up obligations. Liquid waste is processed through cation exchange to remove cesium-137 with crystalline silicotitanate (CST) ion exchanger resin. The impact of sodium concentration on cesium removal with CST has a clear and defined impact on process efficiency. Variations in anions composition suggest a potential correlation with system behavior, although the relationship is not well resolved. A simple analytical equation developed from a suite of simulated supernates varying in hydroxide, nitrate, nitrite, and carbonate content can be used to predict CST ion exchange behavior.