The dissolution behavior of borosilicate glasses in far-from equilibrium conditions

Neeway, James J.; Rieke, Peter C.; Parruzot, Benjamin; Ryan, Joseph V.; Asmussen, R. Matthew

doi:10.1016/j.gca.2018.02.001

Cited by 50 publications

(61 citation statements)

References 73 publications

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“…This is consistent with the data of Neeway et al 16 who reported an invarient response at 90°C using the same buffer solutions as those used here. In addition, data showing the determination of steady-state conditions for a selection of experimental conditions are provided in Supplementary Figures 1a and b.…”

Section: Resultssupporting

confidence: 93%

“…1a, good agreement was found between the data collected in this study and that of Neeway et al 16 and the combined data sets were used to obtain the rate parameters in Table 1. Figure 1c shows that the silicon foward rates (R Si ), obtained at different pH and T are smaller by factors varying between 2 and 7 than those obtained by Inagaki et al 21 using the micro-channel-flow through (MCFT) methodology (depending on specific pH and temperature, Supplementary 21 contained KCl and HCl and that utilised by Fournier et al 22 contained KOH; it is possible that K participated in ion-exchange reactions with alkali elements (i.e., Na) in the glass, enhancing the dissolution rate.…”

Section: Discussionsupporting

confidence: 78%

“…where q is flow-rate and S is sample-surface-area at pH(RT) 9 and 40°C determined from SPFT showing data from this study and Neeway et al 16 Error bars are the standard error calculated using Eqs. (7)- (8); b Compiled forward dissolution rates using data from this study and from Neeway et al 16 showing log 10 …”

Section: Introductionmentioning

confidence: 79%

“…The forward dissolution rate (R i , where i is Si, B or Na) of the ISG at pH(RT) 9 and 40°C was obtained from the mean value of the dissolution rates measured at log 10 )] value of -7.0 was chosen to conduct rate law determination experiments, with confidence that dilute conditions, enabling the accurate measurement of forward dissolution rates, would be maintained over all temperatures studied; the data of Neeway et al 16 indicates that a log 10 [(q/S)/(m s -1 )] value of -7.0 is sufficient to achieve forward rate conditions at 90°C which is expected to be the most aggressive condition studied here. Forward rates (R B , R Si and R Na ) …”

Section: Resultsmentioning

confidence: 99%

“…(7)- (8); b Compiled forward dissolution rates using data from this study and from Neeway et al 16 showing log 10 …”

Section: Introductionmentioning

confidence: 99%

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Corrosion of the International Simple Glass under acidic to hyperalkaline conditions

et al. 2018

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Assessment of glass dissolution kinetics, under disposal relevant temperature and pH environments, is required to credibly estimate radionuclide release rates from vitrified radioactive waste. Leaching of the International Simple Glass (ISG) under acidic to hyperalkaline conditions was examined. Forward rate measurements have been obtained using the dynamic leaching SPFT protocol and rate parameters for B, Na and Si in the basic regime; errors in rates predicted using these parameters at high pH and temperature are significant because the fitting uses logarithmic data. Longer term behaviour under hyperalkaline conditions, representative of some disposal environments, was investigated using the PCT and MCC-1 static leaching protocols with Ca(OH)2 solutions for up to 120 days (PCT) and 720 days (MCC-1). In hyperalkaline conditions dissolution was incongruent for all elements and the presence of alternating zirconia-rich and zirconia-poor alteration layers was observed on all leached monoliths, indicating the occurrence of a self-organisation phenomenon during leaching.

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Section: Resultssupporting

confidence: 93%