Inhibition of calcium and magnesium carbonate crystallization with sodium polyacrylate
https://doi.org/10.29235/1561-8331-2019-55-3-377-384
Abstract
It is known that when water are used for technological purposes, in circulating water supply systems of enterprises as a coolant during continuous heating and cooling, the formation of insoluble precipitates, most often calcium carbonates, occurs on the walls of heat exchangers, which leads to a large number of problems, even production can be stopped for cleaning equipment. To prevent the formation of salts, it is necessary to use precipitation inhibitors. Sodium polyacrylate was investigated as a precipitation inhibitor. The composition, morphology and IR spectra of calcium carbonate precipitate obtained in the absence and in the presence of sodium polyacrylate were studied. It was established that the effect of sodium polyacrylate on the mechanism of crystallization of carbonate sediment depends on the pH of the initial solution. The results of IR spectroscopy, X-ray diffraction analysis and images obtained by electron microscopy indicate the participation of polymer molecules in the formation of the crystalline structure of the carbonate precipitate.
About the Authors
I. V. Shestak
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Irina V. Shestak – Ph. D. (Engineering), Researcher
9/1, Surganov Str., 220072, MinskA. D. Vorobiev
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Artyom D. Vorobiev – Ph. D. (Chemistry), Senior Researcher
9/1, Surganov Str., 220072, Minsk
D. V. Cherednichenko
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Denis V. Сherednichenko – Ph. D. (Chemistry), Leading Researcher
9/1, Surganov Str., 220072, MinskE. V. Vorobyova
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Elena V. Vorobieva – D. Sc. (Chemistry), Professor, Head of the Laboratory of Polymer-Containing Disperse Systems
9/1, Surganov Str., 220072, MinskE. V. Laevskaya
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Еlena V. Layeuskaya – Ph. D. (Engineering), Senior Researcher
9/1, Surganov Str., 220072, MinskM. A. Astakhova
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Marina A. Astakhova − Junior Researcher
9/1, Surganov Str., 220072, Minsk
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