Corrosion Behavior of a Powdered Simulated Nuclear Waste Glass in the Presence of Bentonite

Yaohiro Inagaki, Hirotaka Furuya, Kazuya Idemitsu, Shigeaki Yonezawa, Sataro Nishikawa, Jitsuya Takada

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Static corrosion tests of a powdered simulated waste glass were performed in deionized water with and without bentonite at 90°C for periods of up to 130 days. The glass irradiated with thermal neutron for activating Cs in the glass was used as a glass specimen in order to determine the sorption of Cs on bentonite. In the corrosion tests without bentonite, it was observed that normalized elemental mass loss (NL) values for soluble elements (B, Li, Na and Mo) were larger than those for Si by a factor of three and continued to increase after saturation of Si. In the corrosion tests in the presence of bentonite, it was observed that the glass corrosion was enhanced, and a large amount of Cs was sorbed on bentonite. The experimental results were analyzed by use of some corrosion models. The analysis showed that diffusion of the soluble elements is expected to be a dominant process for the glass corrosion, as well as the dissolution/precipitation reactions. In addition, it is expected that the glass corrosion in the presence of bentonite is largely affected by both ion-exchange equilibrium of the aqueous phase with Na-montmorillonite and precipitation of sepiolite from dissolution of dolomite.

Original languageEnglish
Pages (from-to)948-959
Number of pages12
Journaljournal of nuclear science and technology
Volume31
Issue number9
DOIs
Publication statusPublished - Jan 1 1994

Fingerprint

bentonite
Bentonite
radioactive wastes
Radioactive wastes
corrosion
Corrosion
Glass
glass
corrosion tests
dissolving
Dissolution
Deionized water
montmorillonite
Clay minerals
thermal neutrons
sorption
Sorption
Ion exchange
Neutrons
saturation

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

Cite this

Corrosion Behavior of a Powdered Simulated Nuclear Waste Glass in the Presence of Bentonite. / Inagaki, Yaohiro; Furuya, Hirotaka; Idemitsu, Kazuya; Yonezawa, Shigeaki; Nishikawa, Sataro; Takada, Jitsuya.

In: journal of nuclear science and technology, Vol. 31, No. 9, 01.01.1994, p. 948-959.

Research output: Contribution to journalArticle

Inagaki, Yaohiro ; Furuya, Hirotaka ; Idemitsu, Kazuya ; Yonezawa, Shigeaki ; Nishikawa, Sataro ; Takada, Jitsuya. / Corrosion Behavior of a Powdered Simulated Nuclear Waste Glass in the Presence of Bentonite. In: journal of nuclear science and technology. 1994 ; Vol. 31, No. 9. pp. 948-959.
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