Results of testing the Grambow rate law for use in HWVP glass durability correlations
A theory based on Grambow`s work on hydration of glass as linear function of solution composition was evaluated. Use of Grambow`s linear rate law for correlation of durability with glass composition is not recommended. Dissolution rate of the glass was determined using the rate of release of sodium with an ion selective electrode. This method was tested first applying it to initial dissolution rate of several glasses at several temperatures with zero initial concentration of silicic acid. HW39-2, HW39-4, and SRL-202 from Savannah River were tested; there was significant scatter in the data, with the dissolution rates of HW39 glasses and the SRL glass being comparable within this scatter. The dissolution rate of SRL-202 at 80 C and pH 7 for silicic acid concentrations 0, 25, 50, and 100% saturation, was found to decrease dramatically at only 25% of the saturated silicic acid concentration, which does not conform to the linear theory.
- Research Organization:
- Pacific Northwest National Lab., Richland, WA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 378211
- Report Number(s):
- PNNL--11070; ON: DE96008032
- Country of Publication:
- United States
- Language:
- English
Similar Records
Laboratory testing of West Valley reference 6 glass
Testing the Grambow glass dissolution model by comparing it with Monte Carlo simulation results
Method of determining glass durability
Conference
·
Sat Jul 01 00:00:00 EDT 1995
·
OSTI ID:82325
Testing the Grambow glass dissolution model by comparing it with Monte Carlo simulation results
Conference
·
Thu Jul 01 00:00:00 EDT 1999
·
OSTI ID:20015786
Method of determining glass durability
Patent
·
Wed Dec 31 23:00:00 EST 1997
·
OSTI ID:872020