Refine your search�ソスF     
Report No.
 - 

Fundamental Study on HLW Glass Dissolution in Highly Alkaline Solution

Hayashi, Maki*; Ueno, Kenichi; Yoshikawa, Hideki; Yui, Mikazu

The purpose of this study is to understand, experimentaly and analytically, the alteration-phase formation and associated elemetal release during aqueous corrosion of HLW glass in order to establish the evaluation and modeling of a more realistic long-term exudation action in disposal environment. Static deterioration tests were performed with a simulated HLW glass, P0798 glass, in solution pH is fixed on conditions (pH=11) and Na concentration is changed, the dissolution of glass and mineralization and the influence of Na concentration exerted on Cs exudation were evaluated. The solution concentrations of dissolved elements were measured by use of ICP-AAS , ICP-AES , ICP-MS , and the unreacted glass and reacted glass were analyzed by use of XRD and BET , electron microscope (SEM/EDS). The results indicated that; 1)Na-beidellite may generate in this experiment condition, 2)The glass dissolution proceeds in proportion to square root of time , it turns out that it is not dependent on Na concentration in solution on this experiment conditions, 3)Most of Cs in the glass is involved with the crystalline alteration-phases formation on the surface of glass.

Acecsses

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.