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北垣 徹; 星野 貴紀; 三本松 勇二; 矢野 公彦; 竹内 正行; 五十嵐 武士*; 鈴木 達也*
Journal of Radioanalytical and Nuclear Chemistry, 296(2), p.975 - 979, 2013/05
被引用回数:4 パーセンタイル:32.48(Chemistry, Analytical)At the Fukushima Daiichi NPPs, a large amount of seawater containing high activity fission product was accumulated and its treatment has been serious problem. Electrocoagulation method is expected to be part of a useful separation system that can reduce the amount of waste and decrease processing time. In this study, powdered adsorbents, such as ferrocyanide and zeolite, added to seawater containing simulated fission products, and electrocoagulation effect were investigated. As a result, more than 99% of Cs and I were removed. Moreover, rapid solution reactivity with heat was not observed, so the thermal risk of aqueous processing of the aggregation would be low. In addition, thermal analyses showed that the electrocoagulation process did not lead to thermal decomposition. Therefore, in the case electrocoagulation method is applied to decontamination system, it has the potential to thermally stabilize and reduce waste.
野上 雅伸*; 杉山 雄一*; 川崎 武志*; 原田 雅幸*; 川田 善尚*; 森田 泰治; 菊池 俊明*; 池田 泰久*
Journal of Radioanalytical and Nuclear Chemistry, 296(1), p.423 - 427, 2013/04
被引用回数:5 パーセンタイル:38.62(Chemistry, Analytical)6価のウランに対する選択的吸着剤として利用できるポリビニルポリピロリドン(PVPP)の線照射に対する安定性を硝酸溶液中で調べた。試験の結果、吸着容量は照射により減少することはないこと、6M硝酸溶液で照射した試料ではむしろ増加することを明らかにした。これは、線照射によりPVPPのピロリドン環が開環するが、その生成物もU(VI)に対する吸着性能を有するためと考えられる。