Transport- and surface reaction-controlled SON68 glass dissolution at 30°C and 70°C and pH = 13.7

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Transport- and surface reaction-controlled SON68 glass dissolution at 30°C and 70°C and pH = 13.7. / Liu, Sanheng; Ferrand, Karine; Lemmens, Karel.

In: Applied Geochemistry, Vol. 61, No. 10, 10.2015, p. 302-311.

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@article{dce20a0cf6f3422eb8922b9fab38adcd,
title = "Transport- and surface reaction-controlled SON68 glass dissolution at 30°C and 70°C and pH = 13.7",
abstract = "We report the modelling and experimental studies of SON68 glass dissolution in hyperalkaline solution (pH = 13.7) at 30 and 70 °C for more than 300 days. In the experiments at 30 °C and the first 100 days at 70 °C, the concentrations of B, Mo, alkalis and even Si showed square root of time dependence indicative of a diffusion-controlled process. At 70 °C fast dissolution resumed after about 100 days due to crystallization of aluminosilicates, and glass dissolution became surface reaction-controlled. For the experiment at 30 °C, a simple model coupling dissolution of the glass and precipitation of secondary phases can also produce a good result for non-conservative elements, such as Ca and Al.",
keywords = "Hyperalkaline water, SON68 glass, transport-controlled dissolution, dissolution and precipitation, coupled modelling",
author = "Sanheng Liu and Karine Ferrand and Karel Lemmens",
note = "Score=10",
year = "2015",
month = oct,
doi = "10.1016/j.apgeochem.2015.06.014",
language = "English",
volume = "61",
pages = "302--311",
journal = "Applied Geochemistry",
issn = "0883-2927",
publisher = "Elsevier",
number = "10",

}

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TY - JOUR

T1 - Transport- and surface reaction-controlled SON68 glass dissolution at 30°C and 70°C and pH = 13.7

AU - Liu, Sanheng

AU - Ferrand, Karine

AU - Lemmens, Karel

N1 - Score=10

PY - 2015/10

Y1 - 2015/10

N2 - We report the modelling and experimental studies of SON68 glass dissolution in hyperalkaline solution (pH = 13.7) at 30 and 70 °C for more than 300 days. In the experiments at 30 °C and the first 100 days at 70 °C, the concentrations of B, Mo, alkalis and even Si showed square root of time dependence indicative of a diffusion-controlled process. At 70 °C fast dissolution resumed after about 100 days due to crystallization of aluminosilicates, and glass dissolution became surface reaction-controlled. For the experiment at 30 °C, a simple model coupling dissolution of the glass and precipitation of secondary phases can also produce a good result for non-conservative elements, such as Ca and Al.

AB - We report the modelling and experimental studies of SON68 glass dissolution in hyperalkaline solution (pH = 13.7) at 30 and 70 °C for more than 300 days. In the experiments at 30 °C and the first 100 days at 70 °C, the concentrations of B, Mo, alkalis and even Si showed square root of time dependence indicative of a diffusion-controlled process. At 70 °C fast dissolution resumed after about 100 days due to crystallization of aluminosilicates, and glass dissolution became surface reaction-controlled. For the experiment at 30 °C, a simple model coupling dissolution of the glass and precipitation of secondary phases can also produce a good result for non-conservative elements, such as Ca and Al.

KW - Hyperalkaline water

KW - SON68 glass

KW - transport-controlled dissolution

KW - dissolution and precipitation

KW - coupled modelling

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_141241

UR - http://knowledgecentre.sckcen.be/so2/bibref/13141

U2 - 10.1016/j.apgeochem.2015.06.014

DO - 10.1016/j.apgeochem.2015.06.014

M3 - Article

VL - 61

SP - 302

EP - 311

JO - Applied Geochemistry

JF - Applied Geochemistry

SN - 0883-2927

IS - 10

ER -

ID: 370925