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Polymers
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Polymers in Water Treatment
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Polymers in Water Treatment

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

Deadline for manuscript submissions: closed (24 June 2022) | Viewed by 7449

Special Issue Editors

Dr. Khalid Elwakeel

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Guest Editor
Department of Chemistry, University of Jeddah, College of Science, Jeddah 21959, Saudi Arabia
Interests: sorption; heavy metals; environmental chemistry; water
Dr. Yang Zhen

E-Mail Website
Guest Editor
Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
Interests: environmental-friendly flocculants and adsorbents for water treatment; novel nano-materials in water remediation; solid waste treatment; indoor air pollution control (elimination of formaldehyde, VOCs, etc.)
Dr. Mohammed Hamza

E-Mail Website
Guest Editor
1. Nuclear Materials Authority, POB 530, El-Maadi, Cairo 11728, Egypt
2. School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
Interests: removal of contaminants (dye removal and heavy metal ions); ore processing (leaching, bioleaching); extraction technology (impregnation, biosorption, organic resins); designing of biomaterials; metal valorization
Special Issues, Collections and Topics in MDPI journals
Dr. Ahmed M. Elgarahy

E-Mail Website
Guest Editor
Environmental Science Department, Faculty of Science, Port-Said University, Port-Said, Egypt
Interests: environmental biotechnology; biomass valorization; water environmental engineering; wastewater treatment
Dr. Ziya Ahmad Khan

E-Mail Website
Guest Editor
Department of Chemistry, College of Science, University of Jeddah, Jeddah, Saudi Arabia
Interests: surface science; nanochemistry; separation science

Special Issue Information

Dear Colleagues,

Water is a hot topic these days due to its unique importance. On the other hand, wastewaters are a major source of contamination in the water environment. Water and wastewater management is a major concern and has been a "hot" study topic in recent years. The aim of this Special Issue is to give an overview of recent advances in the application of polymers for water and wastewater treatment. Natural and synthetic polymers exhibit remarkable characteristics when used to remove pollutants in water and wastewater. We are interested in polymer properties, polymers for coagulation and flocculation, polymers as adsorbents and filters, polymer composites, polymer enhanced filtration, functional groups effects, treatment evaluation, etc. Due to their low cost, biocompatibility, biodegradability, non-toxicity, and ability to chemically modify their surface to achieve high specificity, natural polymeric materials have received a lot of attention in water treatment.

This Special Issue on “Polymers in Water Treatment” will bring together high-quality papers on the most recent advances in natural-material-based polymer applications for the removal capability of inorganic and organic species from water. This Special Issue is expected to include research on fundamental physical–chemical aspects of adsorption, as well as natural polymer surface modification for selectivity, characterization, and applications involving the use of these materials in the treatment of real-world samples are also encouraged.

Dr. Khalid Elwakeel
Dr. Yang Zhen
Dr. Mohammed F. Hamza
Dr. Ahmed M. Elgarahy
Dr. Ziya Ahmad Khan
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

  • polymer surface modification and characterization
  • adsorption
  • flocculation
  • membranes
  • organic and inorganic pollutants

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (2 papers)

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Research

19 pages, 35013 KiB  
Article
Grafting of Thiazole Derivative on Chitosan Magnetite Nanoparticles for Cadmium Removal—Application for Groundwater Treatment
by Mohammed F. Hamza, Adel A.-H. Abdel-Rahman, Alyaa S. Negm, Doaa M. Hamad, Mahmoud S. Khalafalla, Amr Fouda, Yuezhou Wei, Hamada H. Amer, Saad H. Alotaibi and Adel E.-S. Goda
Polymers 2022, 14(6), 1240; https://doi.org/10.3390/polym14061240 - 18 Mar 2022
Cited by 22 | Viewed by 3030
Abstract
The synthesis and developments of magnetic chitosan nanoparticles for high efficiency removal of the cadmium ions from aquatic medium are one of the most challenging techniques. Highly adsorptive composite (MCH-ATA) was produced by the reaction of chitosan with formaldehyde and amino thiazole derivative. [...] Read more.
The synthesis and developments of magnetic chitosan nanoparticles for high efficiency removal of the cadmium ions from aquatic medium are one of the most challenging techniques. Highly adsorptive composite (MCH-ATA) was produced by the reaction of chitosan with formaldehyde and amino thiazole derivative. The sorbent was characterized by FTIR, elemental analyses (EA), SEM-EDX, TEM analysis, TGA and titration (volumetric). The modified material includes high nitrogen and sulfur contents (i.e., 4.64 and 1.35 mmol g−1, respectively), compared to the pristine material (3.5 and 0 mmol g−1, respectively). The sorption was investigated for the removal of Cd(II) ions from synthetic (prepared) solution before being tested towards naturally contaminated groundwater in an industrial area. The functionalized sorbent shows a high loading capacity (1.78 mmol Cd g−1; 200 mg Cd g−1) compared to the pristine material (0.61 mmol Cd g−1; 68.57 mg Cd g−1), while removal of about 98% of Cd with capacity (6.4 mg Cd g−1) from polymetallic contaminated groundwater. The sorbent displays fast sorption kinetics compared to the non-modified composite (MCH); 30 min is sufficient for complete sorption for MCH-ATA, while 60–90 min for the MCH. PFORE fits sorption kinetics for both sorbents, whereas the Langmuir equation fits for MCH and Langmuir and Sips for MCH-ATA for sorption isotherms. The TEM analysis confirms the nano scale size, which limits the diffusion to intraparticle sorption properties. The 0.2 M HCl solution is a successful desorbing agent for the metal ions. The sorbent was applied for the removal of cadmium ions from the contaminated underground water and appears to be a promising process for metal decontamination and water treatment. Full article
(This article belongs to the Special Issue Polymers in Water Treatment)
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22 pages, 6964 KiB  
Article
Design and Preparation of Biomass-Derived Activated Carbon Loaded TiO2 Photocatalyst for Photocatalytic Degradation of Reactive Red 120 and Ofloxacin
by Yousef Gamaan Alghamdi, Balu Krishnakumar, Maqsood Ahmad Malik and Sultan Alhayyani
Polymers 2022, 14(5), 880; https://doi.org/10.3390/polym14050880 - 23 Feb 2022
Cited by 32 | Viewed by 3615
Abstract
The design and development of novel photocatalysts for treating toxic substances such as industrial waste, dyes, pesticides, and pharmaceutical wastes remain a challenging task even today. To this end, a biowaste pistachio-shell-derived activated carbon (AC) loaded TiO2 (AC-TiO2) nanocomposite was [...] Read more.
The design and development of novel photocatalysts for treating toxic substances such as industrial waste, dyes, pesticides, and pharmaceutical wastes remain a challenging task even today. To this end, a biowaste pistachio-shell-derived activated carbon (AC) loaded TiO2 (AC-TiO2) nanocomposite was fabricated and effectively utilized towards the photocatalytic degradation of toxic azo dye Reactive Red 120 (RR 120) and ofloxacin (OFL) under UV-A light. The synthesized materials were characterized for their structural and surface morphology features through various spectroscopic and microscopic techniques, including high-resolution transmission electron microscope (HR-TEM), field emission scanning electron microscope (FE-SEM) along with energy dispersive spectra (EDS), diffuse reflectance spectra (DRS), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, photoluminescence spectra (PL) and BET surface area measurements. AC-TiO2 shows enhanced photocatalytic activity compared to bare TiO2 due to the change in the bandgap energy and effective charge separation. The degradation rate of dyes was affected by the bandgap of the semiconductor, which was the result of the deposition weight percentage of AC onto the TiO2. The presence of AC influences the photocatalytic activity of AC-TiO2 composite towards RR 120 and OFL degradation. The presence of heteroatoms-enriched AC enhances the charge mobility and suppresses the electron-hole recombination in AC-TiO2 composite, which enhances the photocatalytic activity of the composite. The hybrid material AC-TiO2 composite displayed a higher photocatalytic activity against Reactive Red 120 and ofloxacin. The stability of the AC-TiO2 was tested against RR 120 dye degradation with multiple runs. GC-MS analyzed the degradation intermediates, and a suitable degradation pathway was also proposed. These results demonstrate that AC-TiO2 composite could be effectively used as an ecofriendly, cost-effective, stable, and highly efficient photocatalyst. Full article
(This article belongs to the Special Issue Polymers in Water Treatment)
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