An experimental study of the dissolution rates of simulated aluminoborosilicate waste glasses as a function of pH and temperature under dilute conditions

Experimental determination of the effect of the ratio of B/Al on glass dissolution along the nepheline (NaAlSiO4)–malinkoite (NaBSiO4) join

“…These results also suggest that secondary reactions such as alkali ion exchange are not impacting the release of Na under these test conditions. Alkali-ion exchange is a process in which alkali elements, such as Na + , contained in the glass exchanges with H + ions in solution (Pederson et al, 1990;McGrail et al, 2001b;Pierce et al, 2008b). Sodium ions associated with non-bridging oxygen atoms are particularly vulnerable to ion exchange, and the number of NBO's increases proportionally with the mol% of [3] B for the NeB glasses that contain boron.…”

Impact of iron chelators on short-term dissolution of basaltic glass

“…Short-term alteration experiments have been designed to determine initial dissolution rates (Luckscheiter and Nesovic, 2004;Fournier et al, 2014) while residual dissolution rates have been calculated for very long-term alteration experiments (Curti et al, 2006;Libourel et al, 2011;Gin et al, 2012Gin et al, , 2013Gin et al, , 2014. These short and long-term dissolution kinetics were investigated with respect to parameters such as temperature and pH (Pierce et al, 2008) and glass elemental composition http://dx.doi.org/10.1016/j.gca.2015.04.025 0016-7037/Ó 2015 Elsevier Ltd. All rights reserved. , and they have been coupled to studies of the alteration gel (Rebiscoul et al, 2005;Jollivet et al, 2008;Gin et al, 2015;Hellmann et al, 2015) or of secondary phases (Pelegrin et al, 2010).…”

Corrosion of the International Simple Glass under acidic to hyperalkaline conditions

“…The SPFT method is a standard dynamic dissolution test in which fresh solution constantly flows over a sample. 17,20,27,[45][46][47][48] In this investigation, pump flow-rates varied from 10-80 mL d -1 for the initial q/S sweep (Supplementary Table S1) and the mass of the ISG sample varied between 0.29-1 g. The experimental parameters used for determining dissolution rates and the range of temperature (40, 50 and 70°C) and pH (RT) (4.5-11) values chosen to ascertain the rate law parameters described in Eq. (1) are provided in Supplementary Table S2.…”