Migration of plutonium in a simulated engineered barrier system consisting of waste glass and compacted bentonite

Yaohiro Inagaki, R. Saito, H. Furuya, Kazuya Idemitsu, Tatsumi Arima, T. Banba, T. Maeda, S. Matsumoto, Y. Tamura, S. Kikkawa

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

In a simulated engineered barrier system consisting of a simulated HLW glass doped with Pu, a compacted bentonite and water under reducing conditions, migration tests of Pu from the glass into the bentonite through water were performed. The following results were obtained: (1) The presence of bentonite enhances the glass dissolution while it has no remarkable influence on the concentration of Pu dissolved species in the solution. (2) Only a small part of the leached Pu, which may correspond to the dissolved species, can diffuse into the bentonite with the apparent diffusion coefficient of 3×10-14 m2/s. (3) Interactions between the glass and the bentonite have no remarkable influence on the diffusion of Pu.

Original languageEnglish
Pages (from-to)1083-1090
Number of pages8
JournalMaterials Research Society Symposium - Proceedings
Volume556
Publication statusPublished - Dec 1 1999
EventProceedings of the 1998 MRS Fall Meeting - Symposium 'Scientific Basis for Nuclear Waste Management XXII' - Boston, MA, USA
Duration: Nov 30 1998Dec 4 1998

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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