SYNTHESIS, SORPTION PROPERTIES AND PRACTICAL APPLICATION OF MULTIFUNCTIONAL IONITES BASED ON POLYETHYLENE TEREPHTHALATE WASTE AND POLYETHYLENEIMINE
Nashr sanasi
14.11.2026
Jurnal
"Tabiiy fanlar integratsiyasida innovatsion ta’lim texnologiyalari: an’anaviylik va zamonaviylik" mavzusidagi Respublika ilmiy-amaliy anjumani
Nashr
"Tabiiy fanlar integratsiyasida innovatsion ta’lim texnologiyalari: an’anaviylik va zamonaviylik" Respublika ilmiy-amaliy anjumani
Sahifalar
6-11
Mualliflar
Annotatsiya
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.
Kalit so‘zlar
chelate sorption
desorption
heavy metals
kinetics
medical sorbents
Foydalanilgan adabiyotlar
1. Torres, N., et al. (2021). Chemical recycling of polyethylene terephthalate (PET) via aminolysis and its application in functional materials. Journal of Applied Polymer Science, 138(12), 50120.
2. Rivas, B. L., & Pereira, E. D. (2018). Water-soluble polymer-metal complexes and their application in membrane separation process. Progress in Polymer Science, 33(3), 323-356.
3. Smith, M. J., & Gupta, A. K. (2020). Polyethyleneimine-functionalized sorbents for heavy metal ion removal: Kinetics and isotherms. Chemical Engineering Journal, 385, 123890.
4. Zhao, X., et al. (2019). Highly selective chelating resins with polyamine ligands for heavy metal decontamination from aqueous systems. ACS Applied Materials & Interfaces, 11(18), 16890-16901.
5. Wang, Y., & Chen, J. (2022). Recycling of waste plastics into high-value adsorbents for environmental and biomedical applications. Green Chemistry, 24(8), 3105-3122.
6. Liu, M., et al. (2023). Polyethyleneimine-modified resins as potential hemoperfusion adsorbents for toxin clearance. Biomacromolecules, 24(2), 890-901.
7. Ismailov A.I., Mirzaev U.M., Ismailov R.I. Ion-exchange resins based on epibromohydrin with N,N-dimethylaminoethyl methacrylate // Materials of the Republican Scientific and Technical Conference “Prospects for the Development of Composite and Nanocomposite Materials”, Tashkent, 2016. pp. 285-287.
8. Ismailov A.I., Mukhamedgaliev B.A., Ismailov R.I., Abdukodirov F.B., Khasanov O.Kh. Ionite from waste for the extraction of precious metal ions // Patent for invention of the Republic of Uzbekistan. IAP 06580, 2021. 8 p.
9. Khasanov O.Kh., Khaydarov I.N., Ismailov R.I. Extraction of divalent metal ions based on ionites from wastewater // Collection of abstracts of the International Scientific and Technical Conference “Innovative Technologies in Ensuring the Quality and Safety of Chemical and Food Products”. Tashkent. September 24-25, 2021. pp. 206-207.