[2B15-17] Boiling and Drying Accident

[2B17] Study on applicability of zeolite for mitigation of RuO₄ release

(2) Estimation of gas removal feature of X-type zeolite with small-scale column equipment

*Yuma Sekiguchi¹, Tetsuya Kato¹, Tsuyoshi Usami¹ (1. CRIEPI)

Keywords:High-level liquid waste, Dry-out, Ruthenium, Zeolite

We conducted the research on gas removal feature of X-type zeolite for the countermeasure of RuO₄ release on the accident of a reprocessing facility. X-type zeolite, which was to be found with the potential for RuO₄ removal in the previous studies, was investigate by the larger scale equipment than the previous studies. As the result, the capability of RuO₄ removal was influenced by the co-existing nitric acid vapor, and nitric acid degraded the zeolite capability of RuO₄ removal when nitric acid was too much comparing to zeolite.