[3E09-11] Radiolysis 2

[3E11] Radiolysis Studies on H₂ Retention with Changing Hydrophilicity of Carbonate Slurry

(3)Gamma Radiolysis Estimation of H₂ (Gas)Retention Properties

*Tatsuya Ito¹, Ryuji Nagaishi¹, Ryo Kuwano¹ (1. JAEA)

Keywords:Carbonate Slurry, H2 (Gas) Retention, Gamma Radiolysis, H2 Formation, Sample Height Dependence

Hydrogen molecule (H₂) formed as a dissolved species by radiolysis of pore water in the slurry and then turned into a gas is retained by the slurry, and the H₂ retained amount would be dependent on the viscosity and height of slurry. The hydrophilicity (water absorption)-lowering of carbonate slurry waste emitted from the 1F ALPS co-precipitation system has been considered, and in order to estimate the effectiveness of lowering from the viewpoint of the repression of H₂ retention, it is important to clarify what and how the H₂ retention property would be changed by this lowering. In this report as the third in a series of presentations, the sample-height dependence of H₂ generation yield (G-value) released outside the slurry was measured in the gamma radiolysis experiments, and the H₂ retention property was estimated for the current and hydrophilicity-lowered slurries to be compared with each other.