Unsaturated drip tests on sludge based SRL glass : the effects of prior vapor hydration.

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The behavior of a sludge-based Savannah River Laboratory (SRL) waste glasses exposed to as much as 7 years of unsaturated test conditions is reported. This test series included both as-cast glass and glass that had been pre-altered by exposure to 200 C water vapor. Actinides (except neptunium) are retained in alteration products and released primarily as solution-borne colloids and particulate when fresh glass is reacted. Pre-altered glass, however, rapidly releases most elements (including actinides) in a nearly congruent manner when first exposed to dripping water. Normalized boron release from the aged glass is more rapid than that of any other ... continued below

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10 p.

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Fortner, J. A. December 18, 1998.

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Description

The behavior of a sludge-based Savannah River Laboratory (SRL) waste glasses exposed to as much as 7 years of unsaturated test conditions is reported. This test series included both as-cast glass and glass that had been pre-altered by exposure to 200 C water vapor. Actinides (except neptunium) are retained in alteration products and released primarily as solution-borne colloids and particulate when fresh glass is reacted. Pre-altered glass, however, rapidly releases most elements (including actinides) in a nearly congruent manner when first exposed to dripping water. Normalized boron release from the aged glass is more rapid than that of any other element by an order of magnitude. The response of pre-altered glass, as determined by cumulative boron release, follows a power-law behavior with time, corresponding roughly to t{sup 1/4}. This is consistent with a diffusion transport through clay alteration phases on the glass surface.

Physical Description

10 p.

Notes

INIS; OSTI as DE00010872

Medium: P; Size: 10 pages

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  • MRS 1998 Fall Meeting, Boston, MA (US), 11/30/1998--12/04/1998

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  • Report No.: ANL/CMT/CP-96769
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 10872
  • Archival Resource Key: ark:/67531/metadc626484

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  • December 18, 1998

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  • June 16, 2015, 7:43 a.m.

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  • April 6, 2017, 7:01 p.m.

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Fortner, J. A. Unsaturated drip tests on sludge based SRL glass : the effects of prior vapor hydration., article, December 18, 1998; Illinois. (digital.library.unt.edu/ark:/67531/metadc626484/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.