[1K01-03] Solidification Technology Development

10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)

[1K02] Cement solidification/stabilization of ¹³⁷Cs-adsorbed copper ferrocyanide for final disposal

*Tsuneki Ichikawa^1,2, Takahito Yasukochi¹, Kazuo Yamada² (1. Hokkaido Univ., 2. NIES)

Keywords:

copper ferrocyanide,radiocesium,cement solidification,cation exchanger,contaminated fly ash

The leakage of ¹³⁷Cs from thermally decomposed and cement-solidified copper ferrocyanide, used for ion-chromatographic elimination of ¹³⁷Cs from water that was used for decontaminating ¹³⁷Cs–enriched fly ash, into water was examined. Partially oxidized copper ferrocyanide showed Cs adsorbability in the solid, whereas fully oxidized one lost the adsorbability. However the leakage of Cs was suppressed by the addition of cation exchangers to the solid.