Open AccessInhibition of calcium and magnesium carbonate crystallization with sodium polyacrylate
Author(s) -
И. В. Шестак,
А. Д. Воробьев,
Д. В. Чередниченко,
Е. В. Воробьева,
Е. В. Лаевская,
М. А. Астахова
Publication year - 2019
Publication title -
vescì nacyânalʹnaj akadèmìì navuk belarusì. seryâ hìmìčnyh navuk
Language(s) - English
Resource type - Journals
eISSN - 2524-2342
pISSN - 1561-8331
DOI - 10.29235/1561-8331-2019-55-3-377-384
Subject(s) - sodium polyacrylate , crystallization , calcium carbonate , precipitation , magnesium , sodium carbonate , sodium , chemistry , carbonate , calcium , water of crystallization , chemical engineering , inorganic chemistry , polymer , organic chemistry , raw material , physics , meteorology , engineering
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.