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The effect of foaming additives on acrylic acid/acrylamide hydrogels

Ann Pille, Marie-Josee Dumont, Jason Robert Tavares and Ranjan Roy

Article (2022)

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Abstract

The physical and chemical properties of hydrogels are greatly dictated by their composition. In this study, modifications were brought to the macroscopic structure of hydrogels using foaming additives, and their effects on the swelling capacity and heavy metal adsorption were investigated. Significant differences in swelling capacities were found for hydrogels synthesized with a foaming agent and a foam stabilizer (257 g/g), with a foaming agent without foam stabilizer (195 g/g), or without any additives (182 g/g). The study compared the ion removal capacity for copper (II), cadmium (II), and nickel (II) under competitive and non-competitive conditions. The use of a foaming agent significantly increased the ion removal capacity of the hydrogels, from 54 to 93 mg/g cadmium, from 75 mg/g to 104 mg/g copper, and from 48 mg/g to 80 mg/g nickel. Under competitive conditions, the hydrogels preferentially removed cadmium > copper > nickel. However, maximum removal decreased for individual heavy metals under competitive conditions.

Uncontrolled Keywords

Hydrogels, Porosity, Heavy metals, Swelling properties, Contaminant removal

Subjects: 1800 Chemical engineering > 1800 Chemical engineering
Department: Department of Chemical Engineering
Research Center: CREPEC - Center for Applied Research on Polymers and Composites
Funders: Natural Sciences and Engineering Research Council of Canada, Canada Graduate Scholarships—Master’s Program (NSERC CGSM), Fonds de Recherche Nature et Technology (FRQNT), Research Center for High Performance Polymer and Composite Systems (CREPEC)
Grant number: 2021-PR-281874
PolyPublie URL: https://publications.polymtl.ca/50917/
Journal Title: Journal of Environmental Chemical Engineering (vol. 10, no. 2)
Publisher: Elsevier Ltd
DOI: 10.1016/j.jece.2022.107310
Official URL: https://doi.org/10.1016/j.jece.2022.107310
Date Deposited: 18 Apr 2023 14:59
Last Modified: 28 Sep 2024 09:32
Cite in APA 7: Pille, A., Dumont, M.-J., Tavares, J. R., & Roy, R. (2022). The effect of foaming additives on acrylic acid/acrylamide hydrogels. Journal of Environmental Chemical Engineering, 10(2), 107310 (10 pages). https://doi.org/10.1016/j.jece.2022.107310

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