2025 (3) 1
https://doi.org/10.15407/polymerj.47.03.101
BIOSORBENTS FOR WATER PURIFICATION BASED ON WATER-SOLUBLE POLYSACCHARIDES MODIFIED WITH LATENT ISOCYANATES
NATALIA KOZAK1* (ORCID: 0000-0001-6200-4048), VICTORIIA TRETINICHENKO1,2 (ORCID: 0000-0002-3731-0091), GANNA POBIGAI2 (ORCID: 0009-0000-7923-523X)
*E-mail: kozaksmalt@ukr.net
1Institute of Macromolecular Chemistry, NAS of Ukraine
48, Kharkivske Highway, Kyiv, 02155, Ukraine
2National University of “Kyiv-Mohyla Academy”,
2, Skovorody Str., Kyiv, 04070, Ukraine
Polimernyi Zhurnal, 2025, 47, no. 3: 101-110
Section: Review.
Language: Ukrainian.
Abstract:
Abstract
For environmental and purification purposes, biocompatible and biodegradable polysaccharide-based sorbents present an attractive, cost-effective alternative to traditional adsorbents. New glycopolymer systems based on water-soluble polysaccharides modified with blocked isocyanates of various structures were tested for their ability to remove transition metal ions and phenol from aqueous solutions. The paper compiles data on the adsorption capacity of low-cost, biodegradable polymer systems based on xanthan and konjac glucomannan modified with latent isocyanates. It also explores the mechanism of pollutant retention by these adsorbents, which have proven to be effective for treating highly contaminated water.
It is shown that xanthan glycopolymer networks are promising systems for removing heavy metal ions from aqueous solutions, whereas systems based on konjak glucomannan exhibit good phenol adsorption ability. Using both dynamic and static adsorption methods, the adsorption behavior of GP was analyzed to determine how it depends on the structure of both polysaccharide and isocyanate, as well as on the degree of polysaccharide group substitution. Several parameters, such as contact time, pH, and initial adsorbate concentration, were found to significantly affect the pollutant removal efficiency. The obtained data helps select the optimal conditions for removing waste from water.
Keywords: adsorption, glycopolymer, polysaccharide, blocked isocyanate.
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