[1A05-08] 1F waste characterization

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)

[1A05] Evaluation of Radionuclide Sorption onto Iron Compounds for Radioactivity Inventory Estimation of Radioactive Building Sludge

*Shosei Okuda¹, Masashi Yoshikawa¹, Daichi Igarashi¹, Yoko Takahatake², Haruaki Matsuura¹ (1. Tokyo City University, 2. Japan Atomic Energy Agency)

Keywords:

stagnant water,Radioactive sludge,Ferrihydrite,radionuclide sorption,X-ray Absorption Fine Structure

Understanding the long-term behavior of radionuclides in radioactive sludge generated from the contaminated water at the Fukushima Daiichi Nuclear Power Plant is essential. In this study, the chemical state changes of iron compounds and sorbed elements during the aging process were evaluated. No significant change was observed in the local Fe structure of ferrihydrite after aging for up to 6 weeks; however, the chemical state of the sorbed Eu was suggested to have changed slightly.