STUDY OF ADSORPTION AND KINETIC CHARACTERISTICS OF NATURAL SORBENTS WITH RESPECT TO PLUMBUM (II) IONS
Abstract
The studies conducted are devoted to the study of the sorption capacity of water-soluble polysaccharides with respect to plumbum (II) cations and the establishment of the kinetic characteristics of the process. Fractions of water-soluble polysaccharides derived from the herb Cosmos bipinnatus Cav. (Asteraceae) of two different varieties "Dazzler" and "Purity". Raw materials were harvested during the flowering period of the plant in the Botanical Garden of the Pyatigorsk Medical and Pharmaceutical Institute. As a result of the research, the adsorption capacity of the obtained water-soluble polysaccharides to lead ions was studied.
The chemical composition of Cosmos bipinnatus is not well understood. Phenolic compounds (the presence of chalcones, aurones, phenolic acids, flavonoids) and essential oils have been studied, while information about the carbohydrate composition has hardly been found, although often this group of compounds plays a significant role in pharmacological action. The physicochemical properties of polysaccharides are practically not studied. In this study, we established a rather high sorption capacity of water-soluble polysaccharides obtained from cosmetically doubly-circular two different grades "Dazzler" and "Purity" relative to plumbum (II) ions (90 and 92.5%, respectively). The concentration of lead ions was determined at different time intervals by complexometric titration. The process of complexation proceeds in the first order.
The analysis of the obtained data allows us to conclude that it is possible to use the VRPS obtained from the cosmetically doubly-circular "Purity" and "Dazzler" varieties to extract plumbum (II) ions, and as natural detoxicants.
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