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Information × Registration Number 0214U006719, 0112U000039 , R & D reports Title Physico-chemical study of new sorption-catalytic methods of water purification from trace elements popup.stage_title Head Mamchenko Aleksey Vladimirovich, Registration Date 11-02-2014 Organization A.V Dumansky Institute of Colloid Chemistry and Water Chemistry popup.description2 Object of study - Varvarivska saponite deposits ( Khmelnitsky region. , Ukraine ). Purpose - to determine the chemical and mineralogical properties of saponite , its acid-base characteristics, depending on the sorption of fluoride ions on saponite pH and salt content of the equilibrium solution. Research methods - chemical composition of saponite was determined using a rapid multielement analyzer "Expert 3L". The concentration of fluoride ions were determined by potentiometric method. Iron concentration was determined photometrically, the concentration of sodium , potassium, calcium , magnesium, aluminum - by atomic absorption analysis . Investigated the equilibrium sorption of fluoride ions saponite depending on pH and salt content of the equilibrium solution. The theoretical model of equilibrium sorption of fluoride ion selective towards them exchange groups saponite . Identified specific exchange capacity of saponite by OH - groups and the equilibrium constant . The acid -base properties of saponite ore by means of potentiometric titration in the presence of different salt solutions backgrounds equilibrium . The influence of pH and salt content of the equilibrium solutions of the final equilibrium concentration in the liquid phase cations desorbuyutsya of saponite . The data on desorption of cations from saponite depending on the amount of hydrochloric acid reacted at different salt background in the equilibrium solution, which changed the addition of sodium chloride. Established that the equilibrium solution at pH > 3.4 it is no significant contamination cations desorbuyutsya of material. The composition of the complex cation and its total capacity . It is shown that saponite can be used not only for the treatment of water from fluoride ions, but also to generate highly effective coagulant for water treatment in place of its use, by treatment with sodium hydroxide. This contributes to the low dispersion of primary particles saponite . Area of application: water treatment and water treatment . Product Description popup.authors Дмитренко Юлія Олександрівна Косигіна Ірина Михайлівна Савченко Ольга Олександрівна Семенюк Дмитро Володимирович Старосвітський Олег Васильович Тюлєнєва Людмила Володимирівна Чернова Наталія Миколаївна popup.nrat_date 2020-04-02 Close