Colloidal silica is one of the most unwanted deposits in the water treatment industry. Its control is a complicated issue and the decision on which control method to apply is frequently based on a number of factors. Our goal is the discovery, design and application of organic additives (preferably �green� and environmentally friendly) that have some effect on silicate polymerization. This paper reports the inhibition efficiency of a variety of polymeric additives and some combinations in retarding silicic acid polymerization is supersaturated circumneutral aqueous systems. Three families of polymeric additives tested: (1) neutral, (2) cationic of varying positive charge density, and (3) combinations of anionic and cationic polyelectrolytes. All aforementioned additives and/or blends exhibited inhibition features from �good� to �excellent�. Inhibition efficiency was found to depend on a multitude of factors, such as cationic charge density, inhibitor dosage, time, etc

Silica scale inhibition: Untangling the "Gordian Knot" of scale formation in industrial waters

244th National Meeting (2012)

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