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• W3097620462 abstract "In current paper, the kinetic features of manganese adsorption from dilute aqueous solutions in a dynamic mode were studied. Using dynamic and kinetic curves that take into account the change in the rate coefficient of the sorption process versus its duration, the mechanism of the formation of adsorption layers in the sorption column during the sorption of manganese(II) products which formed after coresponding redox-reaction by surface of the organopolymer anion exchanger AV-17-8 in dynamic mode. Azo dye carmoazine, which is a selective reagent for manganese(VII), was used for its preliminary binding to a strong complex prior to sorption removal. The main process that determines the adsorption interaction in the studied system is the electrostatic attraction of the anionic complex to the positively charged surface of the anionite and the formation of a strong monolayer. The additional fixation of complex is due to the hydrophobic interactions between its molecules and the phenyl radicals of the AV-17-8 matrix. Based on the calculated mass transfer coefficients of the sorption process and the corresponding sorption isotherm, the optimal conditions for the removal of the complex are established, namely: the volumetric rate of transmission of the sorbate through the sorption column is at least - 8 cm3/min; column diameter - 10.0 mm; the minimum weight of the sorbent is 0.5 g; the diameter of the ionite grains is 0.43 ÷ 0.50 mm. Based on the complex of the experimental results obtained and their interpretation, taking into account the known provisions, a mechanism of sorption in the dynamic mode and the formation of adsorption layers in the studied system was proposed. The data obtained can then be used to develop a test system in the form of an indicator tubes and as well as for quantitative sorption-spectroscopic determination of Manganese in various categories of waters via corresponding colorimetric scales." @default.
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• W3097620462 date "2020-09-11" @default.
• W3097620462 modified "2023-10-18" @default.
• W3097620462 title "SORPTION OF MANGANESE AS A COMPLEX WITH CARMOISINE ON ANIONITE AV-17-8 IN DYNAMIC MODE" @default.
• W3097620462 doi "https://doi.org/10.18524/2304-0947.2020.3(75).211730" @default.
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