A novel hierarchical porous polyHIPE/Fe3O4 nanocomposite foam functionalized by 1-vinylimidazole for Fe2+ removal from aqueous solutions

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

International Journal of Environmental Science and Technology Pub Date : 2024-12-19 DOI:10.1007/s13762-024-06268-2

Y. Farahat, M. R. Moghbeli, H. Karimian

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引用次数: 0

Abstract

Highly open porous poly(styrene-co-divinylbenzene) polyHIPE foam was successfully synthesized and then functionalized by different percentages of 1-vinylimidazole co-monomer. Fe₃O₄ nanoparticles were synthesized and incorporated in the functionalized polyHIPE foams to enhance Fe²⁺ removal efficiency from aqueous solutions. The co-monomer in the functionalized and functionalized/Fe₃O₄ nanocomposite foams is well-suited to enhance Fe²⁺ removal efficiency. The adsorption efficiency of the 1-vinylimidazole-functionalized polyHIPE foams increased with increasing 1-vinylimidazole percentage. The kinetic studies showed a pseudo-second-order adsorption kinetics at different co-monomer concentrations. The nanocomposite foam containing 10, 20, 30 wt% Fe₃O₄ removed 79.01, 84.03, and 72.56% of Fe²⁺ ions, respectively. The 1-vinylimidazole@PolyHIPE/20 wt% Fe₃O₄ nanocomposite with the highest Fe²⁺ removal capacity was selected for further adsorption studies. The Fe²⁺ removal efficiency by this nanocomposite foam was investigated at different pHs, adsorbent dosages, and initial Fe²⁺ concentrations using the response surface method (RSM) experimental design. In addition to aqueous solutions containing only Fe²⁺ ions, the Fe²⁺ removal efficiency was evaluated in the presence of Ni²⁺, Cr³⁺, Cr⁶⁺, Zn²⁺, and Pb²⁺ for comparison purposes. These competing metal ions in the solution decreased the Fe²⁺ removal efficiency from 84.03 to 77.20%. The adsorption isotherms were best fitted to the Langmuir equation, indicating the adsorption of a monolayer of Fe²⁺ ions on the polyHIPE walls.

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来源期刊

International Journal of Environmental Science and Technology 环境科学-环境科学

CiteScore

5.60

自引率

6.50%

发文量

806

审稿时长

10.8 months

期刊介绍： International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management. A broad outline of the journal''s scope includes: peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made. The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.