1980
DOI: 10.1016/0016-7037(80)90281-1
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Amorphous silica solubilities—II. Effect of aqueous salt solutions at 25°C

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Cited by 188 publications
(63 citation statements)
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“…Hypotheses have included: 1) a lowered activity of the water component in brines due to electrolyte hydration (Marshall and Warakomski 1980); 2) a decrease in the "shielding" of the silica surface by water molecules in response to surface dehydration at neutral to high pH (Matijevic 1973); 3) an increase in the effective zpc of silica due to the incorporation of metal cations in the surfaces of silica colloids (Yokoyama et al 1993); and 4) interparticle coagulation based on the inner-sphere bonding of sorbed metal cations (Yates et al 1998). …”
Section: What Factors Control the Condensation Of Colloidal Silica Tomentioning
confidence: 99%
“…Hypotheses have included: 1) a lowered activity of the water component in brines due to electrolyte hydration (Marshall and Warakomski 1980); 2) a decrease in the "shielding" of the silica surface by water molecules in response to surface dehydration at neutral to high pH (Matijevic 1973); 3) an increase in the effective zpc of silica due to the incorporation of metal cations in the surfaces of silica colloids (Yokoyama et al 1993); and 4) interparticle coagulation based on the inner-sphere bonding of sorbed metal cations (Yates et al 1998). …”
Section: What Factors Control the Condensation Of Colloidal Silica Tomentioning
confidence: 99%
“…The solubilities of amorphous silica in several separate and mixed salt solutions and of quartz in water and sodium chloride solutions have been presented in recent papers (33)(34)(35)(36)(37)(38)(39)(40)(41). These studies have shown that the solubility of quartz or of amorphous silica is directly proportional to the concentration of 'free" or "effective" water (34,39,41).…”
Section: Iorphous Silica and Quartz Solubilities In Salt Solutionsmentioning
confidence: 99%
“…These studies have shown that the solubility of quartz or of amorphous silica is directly proportional to the concentration of 'free" or "effective" water (34,39,41).…”
Section: Iorphous Silica and Quartz Solubilities In Salt Solutionsmentioning
confidence: 99%
“…SiO 2 exists as monosilicic acid (Si(OH) 4 ) in aqueous solution, as represented in the following equation: SiO 2 ϩ 2H 2 O · (Si(OH) 4 ). The solubility of silica greatly depends on temperature, pH (17), and salt concentration, among other parameters (27). As the temperature of a silicic acid solution declines, its concentration can exceed the solubility of amorphous silica.…”
mentioning
confidence: 99%