Article | REF: K390 V1

Scaling process and its inhibition in industrial water systems

Authors: Amaury BUVIGNIER, Hélène CHEAP-CHARPENTIER, Fabrice CHAUSSEC, Guénolé CHAUSSEC

Publication date: April 10, 2023

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2. Methods for laboratory assessment of scaling phenomena

2.1 Controlled rapid precipitation

Also known as Fast Controlled Precipitation (FCP), this is a non-electrochemical method, based on the moderate degassing of CO 2 dissolved in water so as to gradually raise the supersaturation coefficient of the study solution. Thanks to the moderate agitation of the water, the calco-carbonic equilibria shift towards the formation of solid calcium carbonate in solution. In this way, the germination and precipitation of CaCO 3 approximates the conditions encountered in nature or industrial circuits including semi-open cooling systems.

It simultaneously monitors changes in pH and resistivity over time.

In other words,...

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Methods for laboratory assessment of scaling phenomena