Glass dissolution rates from static and flow-through tests.

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We measured the dissolution rate of a simple five-component glass at 70 C using static tests and single-pass flowthrough (SPFT) tests with pH buffers at pH values of 6.2, 8.3, and 9.6. The two methods yielded similar rates; however, the measured rates are about 10X higher than the rates measured previously for a glass having the same composition using an SPFT test method. Differences are attributed to how the effect of the solution flow rate on the glass dissolution rate was taken into account and how the surface area of crushed glass was estimated. The differences indicate the need to ... continued below

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Jeong, S.-Y. & Ebert, W. L. May 24, 2002.

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Description

We measured the dissolution rate of a simple five-component glass at 70 C using static tests and single-pass flowthrough (SPFT) tests with pH buffers at pH values of 6.2, 8.3, and 9.6. The two methods yielded similar rates; however, the measured rates are about 10X higher than the rates measured previously for a glass having the same composition using an SPFT test method. Differences are attributed to how the effect of the solution flow rate on the glass dissolution rate was taken into account and how the surface area of crushed glass was estimated. The differences indicate the need to standardize the SPFT test procedure.

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  • Spectrum 2002: 9th Biennial International Conference on Nuclear and Hazardous Waste Management, Reno, NV (US), 08/04/2002--08/08/2002

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  • Report No.: ANL/CMT/CP-107811
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 799829
  • Archival Resource Key: ark:/67531/metadc737802

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  • May 24, 2002

Added to The UNT Digital Library

  • Oct. 19, 2015, 7:39 p.m.

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  • March 29, 2016, 7:32 p.m.

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Jeong, S.-Y. & Ebert, W. L. Glass dissolution rates from static and flow-through tests., article, May 24, 2002; Illinois. (digital.library.unt.edu/ark:/67531/metadc737802/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.