Crystallization of Calcium Carbonates from Solutions Containing Bile

The process of calcium carbonate (calcite and vaterite modifications) crystallization from the solutions containing bile is investigated. It was found that calcite is formed in an uncontaminated environment and in the presence of 1 mass % bile, while an increase in bile concentration in the initial solution from 5 to 100 mass % promotes the crystallization of vaterite. It is shown that the mass of the solid phase increases in proportion to an increase in the bile concentration in the initial solution. The dissolution of the synthesized samples in 0.9 mass % NaCl and 0.05 M EDTA was studied. It was revealed that the presence of bile components in the composition of solid samples reduces their dissolution rate.