Products tagged with 'silicic acid'

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Investigating Alternative Mechanisms For Metal-Silicate Scale Formation: Do Metal Hydroxides Play A Role?

Product Number: 51322-17702-SG

Author: Michaela Kamaratou, Konstantinos D. Demadis

Publication Date: 2022

$20.00

The polycondensation of silicate to form colloidal silica is a well-known process. Silica formation takes place through an S_N2-like mechanism that involves an attack of a mono-deprotonated silicic acid molecule on a fully protonated one. Thus, monomeric silicate species produce silicate dimers, and oligomers, and eventually form colloidal silica particles. Nevertheless, this straightforward silica chemistry can be profoundly affected by the presence of certain metal cations, such as calcium, magnesium, aluminum, and iron. When such cations are present in a process water they enhance the rate of polymerization of silicate ions and induce the formation of metal silicate precipitates.

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Ph-Responsive Copolymers As Silica Scale Inhibitors

Product Number: 51322-17703-SG

Author: Georgia Skordalou, Konstantinos D. Demadis

Publication Date: 2022

$20.00

Silicon is an important element of our Planet’s crust, which is transferred into water streams through dissolution.1 Hence, it is usually found as water-soluble silicate or colloidal silica in natural surface waters (sea, rivers, lakes), or underground waters. When such water is used for industrial purposes (eg. industrial cooling), silicate can enter the operating system and can pose a threat to its proper operation. The main reason is the solubility of amorphous silica, a product of the silicate polycondensation process.

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Polymeric Silica Scale Inhibitors: Computational Predictions And Experimental Studies On Inhibitor Efficiencies

Product Number: 51322-17706-SG

Author: Efstratios Korhatzis, Konstantinos Xanthopoulos, Konstantinos D. Demadis

Publication Date: 2022

$20.00

Inorganic scaling and fouling are undesirable processes occurring in process waters that are supersaturated with respect to scaling cations and anions. Mineral scaling is the result of nucleation and crystal growth phenomena that follow predictable pathways. This is because the mineral scales are composed of well-defined crystalline salts, the most common being calcium carbonate, calcium sulfate dehydrate (gypsum), metal sulfides, depending on the particular water chemistry and operational parameters (eg. temperature).

Products tagged with 'silicic acid'

Investigating Alternative Mechanisms For Metal-Silicate Scale Formation: Do Metal Hydroxides Play A Role?

Ph-Responsive Copolymers As Silica Scale Inhibitors

Polymeric Silica Scale Inhibitors: Computational Predictions And Experimental Studies On Inhibitor Efficiencies

Association for Materials Protection and Performance