SYNTHESIS, SORPTION PROPERTIES AND PRACTICAL APPLICATION OF MULTIFUNCTIONAL IONITES BASED ON POLYETHYLENE TEREPHTHALATE WASTE AND POLYETHYLENEIMINE
Published
14.11.2026
Journal
Republican Scientific and Practical Conference on “Innovative Educational Technologies in the Integration of Natural Sciences: Tradition and Modernity”
Issue
“Innovative Educational Technologies in the Integration of Natural Sciences: Tradition and Modernity” Republican Scientific and Practical Conference
Pages
6-11
Authors
Abstract
In this research work, the synthesis of a highly efficient multifunctional and chelating anionite by targeted aminolysis of secondary polyethylene terephthalate (PET) household waste with polyethyleneimine (PEI) and its sorption parameters were investigated. The structure and porosity characteristics of the polymeric material were confirmed by analytical methods. The potential of the synthesized ionite for the separation of heavy metal ions (Pb²⁺, Cu²⁺, Cd²⁺, Cr(VI)) from wastewater and for the purification of blood analytes in medicine was studied. Analysis of the kinetics and equilibrium of the sorption process showed that the process fully conforms to the pseudo-second-order kinetic model and the Langmuir isotherm (R² > 0.995). After 10 desorption-regeneration cycles the sorbent retained more than 93% of its initial capacity. The ionite obtained through the utilization of PET waste demonstrated high efficiency from both ecological and economic perspectives.
Keywords
chelate sorption
desorption
heavy metals
kinetics
medical sorbents
References
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