Corrosion behavior of a powdered simulated nuclear waste glass under anoxic condition
Book
·
OSTI ID:377896
- Kyushu Univ., Fukuoka (Japan). Dept. of Nuclear Engineering
- JAERI, Tokai, Ibaraki (Japan). Dept. of Environmental Safety Research
Static corrosion tests were carried out with a powdered simulated waste glass in deionized water at 90 C under oxic and anoxic conditions, respectively. The corrosion tests under anoxic condition were performed in a globe box purged with mixed gas (N{sub 2} + 5% H{sub 2}), where the pH and Eh of deionized water were maintained at 6.9 and {minus}0.35 V vs. S.H.E. at 25 C, respectively. It was observed that there is a little difference between normalized elemental mass loss (NL) values under oxic and anoxic conditions. For soluble elements (Li, B, Na, Mo) and Ca, NL values under anoxic condition were slightly smaller than those under oxic condition. For Fe and Al, NL values under anoxic condition were slightly larger than those under oxic condition. For Si, Ce, La and Nd, there was no difference between NL values under oxic and anoxic conditions. The experimental results were analyzed on the basis of a corrosion model (Diffusion-combined Model), in which the solution concentration of elements associated with solution pH and Eh can be derived thermodynamically by use of PHREEQE. The analysis suggests that precipitating minerals controlling the solution concentrations of Fe and Ca under anoxic condition are different from those under oxic condition.
- OSTI ID:
- 377896
- Report Number(s):
- CONF-941075--; ISBN 1-55899-253-7
- Country of Publication:
- United States
- Language:
- English
Similar Records
Release of nutrients and metals following oxidation of freshwater and saline sediment
Effects of redox condition on waste glass corrosion in the presence of magnetite
Methods of simulating low redox potential (Eh) for a basalt repository
Journal Article
·
· J. Environ. Qual.; (United States)
·
OSTI ID:5710493
Effects of redox condition on waste glass corrosion in the presence of magnetite
Book
·
Thu Aug 01 00:00:00 EDT 1996
·
OSTI ID:264429
Methods of simulating low redox potential (Eh) for a basalt repository
Conference
·
Fri Dec 31 23:00:00 EST 1982
·
OSTI ID:5283169