Development of new poly(acrylamide–co–acrylonitrile) hydrogel: physicochemical characteristics and affinity for metals/metalloids/herbicides in mono– and bi–sorbate aqueous systems

Tomczyk-Nazarczuk, Agnieszka; Siryk, Olena; Kuśmierz, Marcin; Komaniecka, Iwona; Samchenko, Yurii; Polowczyk, Izabela; Szewczuk-Karpisz, Katarzyna

Development of new poly(acrylamide–co–acrylonitrile) hydrogel: physicochemical characteristics and affinity for metals/metalloids/herbicides in mono– and bi–sorbate aqueous systems

Abstract

Toxic substances cause a potent damage to natural ecosystems and human health. It is thus important to develop effective material to capture various impurities and facilitate environmental remediation. In this study, poly(acrylamide–co–acrylonitrile) hydrogel (HG) was fabricated and characterized by FTIR, XPS, TGA, and swelling. Furthermore, sorption studies were performed to evaluate hydrogel affinity for copper (Cu), cadmium (Cd), arsenic (As), selenium (Se), diuron (D), and glyphosate (G) in mono– and bi–sorbate systems. Sorption efficiency was also examined in the presence of water-soluble macromolecular compounds, ionic polyacrylamide and bacterial exopolysaccharide. The performed analyses suggested that chelation/cordination, surface complexation, electrostatic attraction, hydrogen bonding, and van der Waals forces played a key role in sorption of impurities. The examined hydrogel was of great capacity towards glyphosate allowing for the binding of 99.88% of this toxic plant protection product, especially in the bi-sorbate systems with metals and metalloids. The investigated material bound also great amounts of diuron, especially in the solutions with metalloids. Low desorption degrees (8.9-11.87%) noted in the selected systems confirmed strong affinity of herbicides for HG. Therefore, the developed hydrogel can be considered as an effective material for removing toxic plant protection products from water–soil environments.

Description

The uploaded file is a preprint version of publication: Agnieszka Tomczyk-Nazarczuk, Olena Siryk, Marcin Kuśmierz, Iwona Komaniecka, Yurii Samchenko, Izabela Polowczyk, Katarzyna Szewczuk-Karpisz, Development of new poly(acrylamide-co-acrylonitrile) hydrogel: physicochemical characteristics and affinity for metals/metalloids/herbicides in mono- and bi-sorbate aqueous systems, Journal of Molecular Liquids, Volume 446, 2026.

Keywords

co-polymers cross-linking competitive sorption sorption mechanism environmental remediation

Citation

Agnieszka Tomczyk-Nazarczuk, Olena Siryk, Marcin Kuśmierz, Iwona Komaniecka, Yurii Samchenko, Izabela Polowczyk, Katarzyna Szewczuk-Karpisz, Development of new poly(acrylamide-co-acrylonitrile) hydrogel: physicochemical characteristics and affinity for metals/metalloids/herbicides in mono- and bi-sorbate aqueous systems, Journal of Molecular Liquids, Volume 446, 2026, 129237, ISSN 0167-7322, https://doi.org/10.1016/j.molliq.2026.129237.