Actual problems of modern science, education and training

Abduraxmonova Tukhtaposhsha Rustamovna

Urgench State University, Associate Professor [e-mail]

Sadikova Sabokhat Babayevna Senior Lecturer of

Urgench State University (PhD) [e-mail]

Masharipova Aysha Kamilovna Karimova Roza Bakxtiyarovna Teachers of Urgench State University Karimova Dildor Zaripovna

Student of Urgench State University
Abstract. The complex-forming properties of polycomplexons including ions of amino and amino- phosphon groups obtained on the basis of local raw materials with Cu (II), Ni (II), Co (II), Zn (II) and Cr (III) were analyzed. The process of sorption of metal ions into ion exchangers was studied in the Pseudo-First-Order and Pseudo- Second-Order kinetic models, and it was determined by studying the absorption kinetics that the sorption process was the Pseudo-Second-Order Kinetic Model. The Langmuir and Freundlich constants of the isotherm of absorption of Zn (II) and Cr (III) ions into anion exchange resin and polyampholyte at different temperatures were calculated. Based on the results of the study, the thermodynamic parameters of the sorption process, the isothermal-isobaric potentials, the changes in the values of free energy (ΔG), enthalpy (ΔН) and entropy (ΔS) were found by calculating.
Keywords: polyvinylchloride, anion exchanger, polyampholyte, adsorption, chemisorption, kinetics, isotherm.
Introduction. Currently, there is an acute problem of protecting the environment from the negative consequences of the activities of industrial enterprises, as a result of which a large number of substances of various origins, both natural and anthropogenic, are released. Among them are substances of natural origin, the most dangerous toxic metal ions [1]. The sources of environmental pollution are mainly ferrous and non- ferrous metallurgy, mechanical engineering, and battery recycling plants. In recent years, a wide range of ion-exchange sorbents has been produced, including ion- exchange resins based on polymer materials with the properties of cation and anion- exchange and making complexes. The obtained ion-exchange resins allow us to
successfully solve environmental problems.[2] To date, in the world, polymer-metal alloys are being used for various purposes in various industries. A number of interesting research works have been carried out by scientists from the leading countries of the world on obtaining such polymer-metal alloys [3]. Polymeric-metal complexes can be synthesized mainly by interaction of synthetic polymers with metals, by sorption of metal ions to polycomplexons, by polymerization of monomers in which metal atoms are stored [4]. Synthesized polymer-metal ores have been widely used in various industries, including organic synthesis as a highly effective catalyst, purification of wastewater from harmful substances, sensors and other purposes [5].