Chemical durability of Savannah River Plant waste glass as a function of groundwater pH

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5430403

Wicks, G G; O'Rourke, P E; Whitkop, P G

The leachability of Savannah River Plant (SRP) waste glass was assessed for leachants in the pH range of 3 to 11. A parabolic relationship was observed between leachability and solution pH in this range. At 40/sup 0/C, leachability was lowest within a pH range of approximately 5 to 9. Most of the groundwaters in potential repository locations have pH values in this range. Below pH 5 and above pH 9, leachability of the waste glass increases. Leachability as a function of solution pH was studied first at room temperature and then in more detail at 40/sup 0/C, 90/sup 0/C, and 150/sup 0/C using abbreviated MCC-1 and MCC-2 static leaching tests. These data were then correlated with the formation and stabilization of surface layers that are produced on the waste glass during leaching.

• Research Organization: Du Pont de Nemours (E.I.) and Co., Aiken, SC (USA). Savannah River Lab.
• DOE Contract Number: AC09-76SR00001
• OSTI ID: 5430403
• Report Number(s): DP-MS-81-104; CONF-820547-6; ON: DE82014498
• Country of Publication: United States
• Language: English

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