STRUCTURAL FEATURES OF IRREVERSIBLE COMPOSITE SORBENT BASED ON CALCIUM SILICATES AND ALUMINUM SILICATES
Evolution of the short-range order of the composite granular sorbent based on calcium silicates and aluminum silicates is studied in the series: original state - after soaking in distilled water - after sorption of copper. It is shown that irreversible sorbent composition is a hydrolytically active open physico-chemical system. During the synthesis of the sorbent in the environment of H <sub>2</sub>O and CO <sub>2</sub> reactions of defect formation occur resulting in the formation of carbonate spurrite structurally related to calcium silicate. Carbonate spurrite creates additional active sites for sorption of copper to form a stable hydrated mixed carbonate structures.