New Insights into Porous Organic Polymers and Their Application in Contaminant Removal

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Chemical Processes and Systems".

Deadline for manuscript submissions: closed (30 June 2024) | Viewed by 2479

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Department of Chemistry and Biochemical Engineering, Institute of Chemical and Biological Technologies (IHBT), Satbayev University, Almaty 050013, Kazakhstan
Interests: cryogels; polyelectrolyte complexes; amphoteric polymers; zwitterionic polymers; composites with metal nanoparticles; smart macroporous hydrogels; biocompatibility; biomaterials; enterosorbents; synthesis
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Special Issue Information

Dear Colleagues,

Polymer chemistry has a history of more than 100 years as a separate branch of science. In this field, porous organic polymers have attracted great attention from researchers and engineers regarding their use in the food, biomedicine, biosensor, building, and heavy industries. An increasing number of multifunctional polymers are designed, illustrating the great potential to manage many global ecological challenges in areas such as the removal of heavy metals, dyes, and toxic contaminants.

We are pleased to invite you to contribute to a collection of research papers related to new compositions of aerogels and cryogel preparation, including novel approaches to the characterization and chemical modification of porous organic polymer surface, molecular imprinted (MIP) scaffolds, separation of biomolecules via ligand exchange mechanisms (chelation) and ion exchange, nano- and microparticle elimination, macroporous hydrogels acceptable for selective or nonselective extraction of noble metal ions, stimuli-responsive porous polymers based on inter- and/or polyelectrolyte complexes, methods of preparation of composite cryogels composed of metal nanoparticles MOFs, ZIFs, or metal oxide nanoparticles and polymers, and the use of nontoxic modified cross-linking agents for the synthesis of biocompatible scaffolds for biomedical application.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following: composite porous polymers with given properties for biosensing; cryogels for efficient radionuclide separation or extraction; aerogel polymer–metal systems for catalysis; cryogels and aerogels as drug delivery systems.

Dr. Dmitriy Berillo
Guest Editor

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Keywords

  • cryogels
  • aerogels
  • bioremediation
  • heavy metal removal
  • fermentation
  • kinetics of adsorption
  • sample preparation
  • solid-phase extraction
  • catalysis in gaseous phase
  • catalysis in liquid phase
  • MOFs
  • ZIFs

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Published Papers (1 paper)

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Research

19 pages, 3946 KiB  
Article
Chitosan Glutaraldegyde Cryogels for Wastewater Treatment and Extraction of Silver Nanoparticles
by Dmitriy Berillo and Aknazar Arysbek
Processes 2023, 11(6), 1661; https://doi.org/10.3390/pr11061661 - 30 May 2023
Cited by 4 | Viewed by 2010
Abstract
The discharge of nanoparticles into the environment, such as through industrial plants and municipal wastewater treatment plants, can pose a hazard to aquatic life. This study demonstrates the effective removal of silver nanoparticles (AgNPs) using a chitosan-based cryogel, which has potential applications in [...] Read more.
The discharge of nanoparticles into the environment, such as through industrial plants and municipal wastewater treatment plants, can pose a hazard to aquatic life. This study demonstrates the effective removal of silver nanoparticles (AgNPs) using a chitosan-based cryogel, which has potential applications in agriculture, as well as in water treatment or in industrial plants that discharge into environmentally sensitive water bodies. The adsorbent is economically viable, has high affinity toward metal nanoparticles, is biodegradable and biocompatible, and displays a good removal of nanoparticles. AgNP adsorption was monitored using UV/Vis spectroscopy and TEM analysis. SEM, nitrogen adsorption, TGA, and FTIR analysis were used for cryogel characterization. The BET model of nitrogen adsorption revealed a specific surface area of 7.7 m2/g for chitosan–glutaraldehyde (CHI–GA) cryogels. The elasticity modulus of the CHI–GA cryogel was estimated as 543 ± 54 kPa. The AgNPs were characterized by a negative charge (−38 ± 17 mV) and an average diameter of 64 nm with a polydispersity index of 0.16. The mechanism of AgNP adsorption involved electrostatic interactions between the oppositely charged surfaces of the cryogel and particles. The temperature of the cryogel preparation affected the water permeability and adsorption efficiency. CHI–GA illustrated a capacity of 63 mg/g at a flow rate of 0.8 mL/min under a solution pressure of 500–970 Pa. The increase in pressure of the model plant extract-stabilized AgNP suspension (14 mg/L AgNPs) to 3.42–3.9 kPa led to an increase in the water permeability rate to 10 mL/min and a significant decrease in the efficiency of particle removal. The CHI–GA adsorbent demonstrated up to 96.5% AgNP removal until the breakthrough point due to adsorbent saturation. The CHI–GA cryogel adsorbent (1 g) can be used for efficient filtering of about 4.5 L of contaminated water. Full article
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