Peculiar Properties of Temperature Modification of Carbonate Precipitate

Abstract

The carbonate precipitate of sugar production from sugar beet is a large-tonnage organic waste, the disposal of which is a significant problem for many agricultural regions. According to studies, the temperature of maximum combustion is 506.1 ° С for carbonate precipitate, the carbon content in TMCP600 was about 2%, CaCO3 94-95%, sand and clay impurities 3-4%. The presence of multiple bonds (modifications C8, C70 and C80) in carbon layer of TMCP600 particles is confirmed by studies of the IR spectrum and the interaction with iodine water. The internal structure of the carbon layer formed is similar to traditional carbon sorbents, such as KAD grade activated carbon. With increasing roasting temperature of a carbonate precipitate, the pH of the aqueous extract increases, which confirms the process of decomposition of the calcium salts of carboxylic acids. The specific surface area of ​​the sorption material, measured by the method of low-temperature nitrogen adsorption, was 82 ± 0.2 m2/ g.