STUDY OF KINETIC PROPERTIES OF THE COMPLEXING ANION EXCHANGERS

Abstract. Background. Use of complexing anion resins in various fields of science and technology requires knowledge of the basic kinetic and physicochemical properties, such as sorption capacity ferrous metal ions, and ion exchange rate of these properties depending on the pH and ionic strength aqueous solutions. Also, the study of the complexation of anion exchangers with metal ions sorbed presence sorption process is an urgent task of Inorganic and Analytical Chemistry. Purpose. In order to study the study supplied kinetic properties anion synthesized based on thiourea, melamine and epichlorohydrin, in particular, the values of the rate of sorption and diffusion coefficient of copper and nickel ions. Methodology. Sorption-kinetic properties of the resin synthesized complexing methods complexometric and potentiometric titration. Originality. Synthesized new polyfunctional anion exchanger based on the reaction products of thiourea-based (T), epichlorohydrin (ECH) and melamine (M) having improved sorptive characteristics and form complexes with certain transition metal cations. Findings. These data show that the degree of saturation TEM we synthesized anion is 2.4 mg-eq / g, i.e. resulting anion exchanger in its kinetic properties are not inferior to the famous Universal anion exchangers EDE-10P (1.8 mg-eq / g). Also we set the value of the copper diffusion coefficient after 7 hours of contact phases of the anion exchanger for TEM – 6.8•10-8, and for the anion exchanger EDE-10P – 5.6•10- 8 . Highlights: -We studied the mechanism of ion exchange of copper nickel; -for this purpose, used ion exchange rate depending on the time.