@article{oai:toyama.repo.nii.ac.jp:00014154, author = {松山, 政夫 and 阿部, 信介 and 対馬, 勝年}, journal = {富山大学研究推進機構水素同位体科学研究センター研究報告}, month = {Sep}, note = {application/pdf, The applicability of a freezing technique to the reduction of the volume of waste water contaminated with radioactive materials such as 137Cs, 90Sr, and 90Y has been examined. Simulated waste water containing a trace amount of added non-radioactive cesium (ca. 20 wt. ppm) was used in this study. A cooling pipe was immersed in the simulated waste water, and the cesium concentration in the ice produced around the pipe and the residual water were measured by an atomic absorption spectrometry after a given time. The temperature of the cooling fluid flowed through the pipe was regulated below 273 K using a conventional cooling device. The cesium concentration in the formed ice was found to be more 200 times lower than that in the initial simulated waste water. The same results were obtained for waste water with added radioactive cesium (137Cs), and similar phenomena observed for simulated water containing strontium, yttrium, and NaCl with cesium. It was suggested that the cesium concentration is strongly affected by the number of bubbles in the ice, crystal size of the ice, and the total impurity concentration in the waste water. Our results indicate that freezing is a promising candidate technique for the processing of radioactive waste water., Article, 富山大学研究推進機構水素同位体科学研究センター研究報告, 35巻, 2016.09.30, pp.23-33}, pages = {23--33}, title = {放射性汚染水の減容化に対する氷結晶法の適用性}, volume = {35}, year = {2016} }