高温加熱処理による高濃縮汚染残土の高減容化に関する研究（福島県における汚染土壌洗浄処理フィールド試験（第4報））

概要

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For the purpose of removal of 137Cs from highly densified contaminate soil produced after contaminated soil washing process, reclamation soil techniques of contaminated soil through use of structural instability of mordenite contained in contaminated soil under high temperature heating was testified and the following results were obtained;(1)Structural instability of Cs typed typical native mordinite yielding in Tohoku area in Japan was observed and dissociation of 137Cs from this mordenite was found after heat annealing at 1173K. (2) Remarkable dissociation rate in the early stages was observed and then was slowed down afterword. Dissociation rate of 137Cs reached up to 65% after 1173K×1hr annealing. (3) 100% recovery of Cs from vaporized Cs gas was achieved by technology combination of electric precipitation FP filter newly developed and cold trap.
一般社団法人日本機械学会の論文