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Polymers
Special Issues
New Polymeric Materials for Water Purification
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New Polymeric Materials for Water Purification

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 4301

Special Issue Editors

Prof. Dr. Nuria Vela de Oro

E-Mail Website
Guest Editor
Applied Technology to Environmental Health, Faculty of Health Science, Catholic University of Murcia, 30107 Murcia, Spain
Interests: wastewater treatment; polymers; nanomaterials; catalysts; decontamination; emerging pollutants; monitoring; sensorisation
Prof. Dr. María Isabel Fortea Gorbe

E-Mail Website
Guest Editor
Molecular Recognition and Encapsulation. Faculty of Health Sciences, Catholic University of Murcia (UCAM), 30107 Murcia, Spain
Interests: cyclodextrins; nanomaterials; polymers; drug delivery; food; health; environment

Special Issue Information

Dear Colleagues,

One of the most serious environmental problems we face today is the pollution of natural aquatic ecosystems. Considering that the main source of contamination is inadequately treated wastewater, it is necessary to apply treatment techniques that minimise the pollutant load as much as possible. These strategies were agreed upon in the UN Sustainable Development Goals (SDGs), specifically under Section 6 "Ensure availability and sustainable management of water and sanitation for all". In this sense, it is crucial to establish preventive mechanisms that minimise the presence of pollutants in the environment, including, of course, aquatic systems, with a special emphasis on water for human consumption. Water management is, consequently, a transcendental challenge for researchers working on water decontamination and purification. In this sense, the use of natural or synthesised polymeric materials to achieve a higher level of quality of treated water is currently gaining special relevance due to their high versatility, moderate cost, and possibility of reuse. This Special Issue on "New Polymeric Materials for Water Purification" seeks high quality papers focused on (but not limited to) the latest technical advances in adsorption, flocculation, oxidation, filtration, and other physical, chemical, and/or biological processes or their combinations that are developed with polymeric materials in order to improve the quality of purified water.

Prof. Dr. Nuria Vela de Oro
Prof. Dr. María Isabel Fortea Gorbe
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • polymers
  • nanomaterials
  • water
  • purification
  • wastewater
  • decontamination
  • management
  • emerging contaminants

Published Papers (2 papers)

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Research

15 pages, 31730 KiB  
Article
Optimization Conditions to Obtain Cationic Polyacrylamide Emulsion Copolymers with Desired Cationic Degree for Different Wastewater Treatments
by Tung Huy Nguyen, Linh Pham Duy Nguyen, Thao Thi Phuong Nguyen, Minh Xuan Anh Le, Linh Thi Thuy Kieu, Huong Thi To and Thanh Tien Bui
Polymers 2023, 15(12), 2693; https://doi.org/10.3390/polym15122693 - 15 Jun 2023
Viewed by 1771
Abstract
The synthesis of cationic polyacrylamides (CPAMs) with the desired cationic degree and molecular weight is essential for various industries, including wastewater treatment, mining, paper, cosmetic chemistry, and others. Previous studies have already demonstrated methods to optimize synthesis conditions to obtain high-molecular-weight CPAM emulsions [...] Read more.
The synthesis of cationic polyacrylamides (CPAMs) with the desired cationic degree and molecular weight is essential for various industries, including wastewater treatment, mining, paper, cosmetic chemistry, and others. Previous studies have already demonstrated methods to optimize synthesis conditions to obtain high-molecular-weight CPAM emulsions and the effects of cationic degrees on flocculation processes. However, the optimization of input parameters to obtain CPAMs with the desired cationic degrees has not been discussed. Traditional optimization methods are time-consuming and costly when it comes to on-site CPAM production because the input parameters of CPAM synthesis are optimized using single-factor experiments. In this study, we utilized the response surface methodology to optimize the synthesis conditions, specifically the monomer concentration, the content of the cationic monomer, and the content of the initiator, to obtain CPAMs with the desired cationic degrees. This approach overcomes the drawbacks of traditional optimization methods. We successfully synthesized three CPAM emulsions with a wide range of cationic degrees: low (21.85%), medium (40.25%), and high (71.17%) levels of cationic degree. The optimized conditions for these CPAMs were as follows: monomer concentration of 25%, content of monomer cation of 22.5%, 44.41%, and 77.61%, respectively, and initiator content of 0.475%, 0.48%, and 0.59%, respectively. The developed models can be utilized to quickly optimize conditions for synthesizing CPAM emulsions with different cationic degrees to meet the demands of wastewater treatment applications. The synthesized CPAM products performed effectively in wastewater treatment, with the treated wastewater meeting the technical regulation parameters. 1H-NMR, FTIR, SEM, BET, dynamic light scattering, and gel permeation chromatography were employed to confirm the structure and surface of the polymers. Full article
(This article belongs to the Special Issue New Polymeric Materials for Water Purification)
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25 pages, 4809 KiB  
Article
Triazine-Based Porous Organic Polymers: Synthesis and Application in Dye Adsorption and Catalysis
by Pedro M. C. Matias, Dina Murtinho and Artur J. M. Valente
Polymers 2023, 15(8), 1815; https://doi.org/10.3390/polym15081815 - 7 Apr 2023
Cited by 1 | Viewed by 2047
Abstract
The scientific community has been developing promising materials to increase the sustainability and efficiency of production processes and pollutant environmental remediation strategies. Porous organic polymers (POPs) are of special interest, as they are insoluble custom-built materials at the molecular level, endowed with low [...] Read more.
The scientific community has been developing promising materials to increase the sustainability and efficiency of production processes and pollutant environmental remediation strategies. Porous organic polymers (POPs) are of special interest, as they are insoluble custom-built materials at the molecular level, endowed with low densities and high stability, surface areas, and porosity. This paper describes the synthesis, characterization, and performance of three triazine-based POPs (T-POPs) in dye adsorption and Henry reaction catalysis. T-POPs were prepared by a polycondensation reaction between melamine and a dialdehyde (terephthalaldehyde (T-POP1) or isophthalaldehyde derivatives with a hydroxyl group (T-POP2) or both a hydroxyl and a carboxyl group (T-POP3)). The crosslinked and mesoporous polyaminal structures, with surface areas between 139.2 and 287.4 m2 g−1, positive charge, and high thermal stability, proved to be excellent methyl orange adsorbents, removing the anionic dye with an efficiency >99% in just 15–20 min. The POPs were also effective for methylene blue cationic dye removal from water, reaching efficiencies up to ca. 99.4%, possibly due to favorable interactions via deprotonation of T-POP3 carboxyl groups. The modification of the most basic polymers, T-POP1 and T-POP2, with copper(II) allowed the best efficiencies in Henry reactions catalysis, leading to excellent conversions (97%) and selectivities (99.9%). Full article
(This article belongs to the Special Issue New Polymeric Materials for Water Purification)
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