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Vol. 8 pp. 421-438

O.U. Gapurova, R.R. Khaidarov, I.G. Galiulin

NEW FIBROUS ION-EXCHANGE SORBENTS FOR WATER PURIFICATION

Abstract. The aim of this study was to reduce pollution in water purification systems using fibrous ion-exchange sorbents. A method for modifying a mixed polyester material and polyacrylonitrile threads to obtain these sorbents using available and inexpensive preparations has been developed. Obtaining cation-exchange sorbents included treating the fibers with a 5 % NaOH solution at a temperature of 40-80 °C and a 25 % NH2NH2H2O solution at a temperature of 70-90 °C. Anion-exchange sorbents were obtained by treating cation-exchange sorbents with a 1-5 % polyethyleneimine solution, as well as additionally treating with a 1% epichlorohydrin solution at a room temperature of 30 °C. These sorbents can be used to remove radionuclides, heavy metal ions, and organic contaminants from wastewater and drinking water. The sorption properties of these sorbents and their ability to remove 57Co, 60Co, 65Zn, 90Sr, 134Cs, 137Cs, and other radionuclides, heavy metal ions (Zn, Ni, Cu, Pb, Cd, Cr, etc.) from aqueous media were studied. The static exchange capacity was 1–2 mg-eq/g for cation-exchange sorbents and 0.45–0.8 mg-eq/g for anion-exchange sorbents.

Keywords: polyester, polyacrylonitrile fibers, cation exchange, anion exchange, fibrous sorbent, water purification.

For citation: Gapurova O.U., Khaidarov R.R., Galiulin I.G. [New fibrous ion-exchange sorbents for water purification] Upravlenie tekhnosferoi, 2025, vol. 8, issue 3, рр. 421 – 438. (In Russ.). DOI: 10.35634/UdSU.2025.31.73.005

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About the Authors

Gapurova Olga Urumbaevna

Candidate of Chemical Sciences, Junior Researcher, Institute of Nuclear Physics, Academy of Sciences of the Republic of Uzbekistan, 100214, Tashkent, Uzbekistan.

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Khaidarov Renat Rashidovich

Candidate of Physical and Mathematical Sciences, Head. Laboratory of Interdisciplinary Technologies, Institute of Nuclear Physics, Academy of Sciences of the Republic of Uzbekistan, 100214, Tashkent, Uzbekistan.

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Galiulin Ildar Galievich

Junior Researcher, Institute of Nuclear Physics, Academy of Sciences of the Republic of Uzbekistan, 100214, Tashkent, Uzbekistan.

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