TRANSPORT AND REACTION KINETICS AT THE GLASS: SOLUTION INTERFACE REGION: RESULTS OF REPOSITORY-ORIENTED LEACHING EXPERIMENTS.

Teofilo A. Abrajano*, John K. Bates

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

Repository-oriented leaching experiments involving Savannah River Laboratory (SRL) 165 type glass under a gamma -radiation field (1 plus or minus 0. 2 multiplied by 10**4 R/H) have been performed by the Nevada Nuclear Waste Storage Investigations project. This communication discusses glass surface analyses obtained by SEM, nuclear resonance profiling, and SIMS together with leachate solution data in relation to a mechanism that couples diffusion, hydrolysis (etching and gelation), and precipitation to qualitatively describe the release of different glass components to the leachant solutions. The release of mobile (e. g. Li) and partly mobile (e. g. B) species is controlled primarily by interdiffusion with water species across the interdiffusion zone. Glass components that are immobile in the interdiffusion zone are released to the solution by etching. For prediction of long-term steady state concentrations of glass components with low solubility, the relative rates of release from the glass and secondary mineral precipitation must be taken into account.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposia Proceedings
EditorsJohn K. Bates, Waldemar B. Seefeldt
PublisherMaterials Research Soc
Pages533-546
Number of pages14
Volume84
ISBN (Print)0931837499
StatePublished - 1987
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Fingerprint Dive into the research topics of 'TRANSPORT AND REACTION KINETICS AT THE GLASS: SOLUTION INTERFACE REGION: RESULTS OF REPOSITORY-ORIENTED LEACHING EXPERIMENTS.'. Together they form a unique fingerprint.

Cite this