[2M01-04] Sorption 1

9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)

[2M01] Efficient Cesium Capture Using Potassium-Metakaolin Geopolymer Matrices

*Mai Dung Do Thi Do Thi¹, Sajedah Yousef Abdul-Qader Moushtaha¹, Tadachika Nakayama¹, Tatsuya Suzuki¹, Hisayuki Suematsu¹ (1. Nagaoka University of Technology)

Keywords:

cesium,potassium,metakaolin,geopolymer,nuclear waste,severe accident

The cesium (Cs) capture ability of potassium-metakaolin geopolymer was investigated in this study. Cesium chloride was added to the potassium-based geopolymer with metakaolin and silica fume as the aluminosilicate sources. In the XRD result, potassium chloride was identified, suggesting that the Cs⁺ replaced the K⁺ ion by the ion exchange process. The result of the leaching tests has also shown that cesium is being effectively captured by replacing potassium in the geopolymer matrix.