New and Modified Polymers for Detection and Removal of Pollutants from Water and Air

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Materials in Separation Science".

Deadline for manuscript submissions: 30 November 2025 | Viewed by 528

Special Issue Editors


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Guest Editor
Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia
Interests: synthesis and characterization of non-magnetic; magnetic; and molecularly imprinted polymers; porous polymers; and composites; adsorption; textile dyes; heavy and precious metals removal; radionuclides separation; inverse gas chromatography

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Guest Editor
Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia
Interests: synthesis; functionalization; and characterization of inorganic–polymer hybrid materials and molecularly imprinted polymers based on glycidyl methacrylate as well as analysis of sorption properties of functionalized copolymers and composites to remove cations and oxyanions from aqueous solutions; radionuclides and pesticides removal; dispersive solid phase microextraction

Special Issue Information

Dear Colleagues,

Due to rapid industrialization, climate change, and the expansion of urban areas, large amounts of a variety of pollutants can cause contamination to water resources, soil, and air. Recently, polymer-based materials have attracted considerable attention as multifunctional platforms suitable for use in the detection and purification of different pollutant classes due to their high selectivity, physical and chemical stability, controllable textural properties (porosity and specific surface area), and reusability. A diversity of polymeric adsorbents have been reported in the literature, such as chelating, magnetic, and molecularly imprinted polymers, porous polymeric adsorbents, polymeric membranes and composites, natural polymer biosorbents and derivatives, etc.

The Special Issue “New and Modified Polymers for Detection and Removal of Pollutants from Water and Air” will focus on original research, review articles, and short communications related to novel and modified polymers, hybrid materials, polymer composites, and methods for the removal of various organic, inorganic, and biological pollutants. Topics may include, but are not limited to, the synthesis, functionalization, characterization, mechanism, thermodynamic, and kinetic analysis of adsorption, extraction, detection, and techniques for the removal of pollutants (organic, inorganic, gas, emerging chemicals, radionuclides, etc.). Experimental studies and theoretical analysis, as well as process development, simulation, and equipment design, are welcome.

Dr. Aleksandra Nastasović
Dr. Bojana Marković
Guest Editors

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Keywords

  • polymers and composites
  • molecularly imprinted polymers
  • adsorption mechanism
  • thermodynamic and kinetic analysis of adsorption
  • quantum modeling and simulation
  • radionuclides
  • organic and inorganic pollutants
  • CO2 capture
  • gas separation

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Published Papers (1 paper)

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Research

28 pages, 19278 KiB  
Article
Synthesis and Application of Poly(N-isopropylacrylamide-co-methacrylic Acid) Hydrogels as Sorbent Materials for Wastewater Treatment
by Aleksandar Zdravković, Vesna Nikolić, Snežana Ilić-Stojanović, Sanja Stojanović, Ana Dinić, Maja Urošević, Ivana Gajić and Ljubiša Nikolić
Separations 2025, 12(4), 100; https://doi.org/10.3390/separations12040100 - 17 Apr 2025
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Abstract
N-isopropylacrylamide and methacrylic acid were copolymerized by a free radical polymerized mechanism. The obtained hydrogel poly(N-isopropylacrylamide-co-methacrylic acid) hydrogels, poly(NIPAM-co-MAA), were utilized as sorbent material for removal Cr(VI), Mn(II), and Pb(II) ions from simulated aqueous solutions. Hydrogel [...] Read more.
N-isopropylacrylamide and methacrylic acid were copolymerized by a free radical polymerized mechanism. The obtained hydrogel poly(N-isopropylacrylamide-co-methacrylic acid) hydrogels, poly(NIPAM-co-MAA), were utilized as sorbent material for removal Cr(VI), Mn(II), and Pb(II) ions from simulated aqueous solutions. Hydrogel structures before and after heavy metal sorption are characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The swelling results indicate that poly(NIPAM-co-MAA) hydrogels are pH- and temperature-sensitive and have high swelling reversibility through three swelling/contraction cycles. The studied parameters of heavy metal sorption include the effect of pH, the initial concentration of heavy metal, the effect of temperature, and the desorption of metal ions. The maximum sorption capacities of poly(NIPAM-co-MAA) hydrogels were determined at pH 4.5 and 25 °C, and they are, for Cr(VI), Mn(II), and Pb(II) ions, 289.35 mg/g, 190.59 mg/g, and 349.71 mg/g, respectively. The pseudo-second-order model and the Langmuir adsorption isotherm best describe the sorption of heavy metal ions onto hydrogels. The removal of heavy metals is an exothermic reaction, and the interaction mechanism between the metal and the hydrogel is primarily physical in nature. Results of three sorption/desorption cycles show a good desorption ratio and sorption capacity of poly(NIPAM-co-MAA) hydrogels. Full article
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