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Polymers
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Polymeric Materials in Wastewater Treatment
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Polymeric Materials in Wastewater Treatment

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

Deadline for manuscript submissions: closed (31 October 2024) | Viewed by 4027

Special Issue Editor

Prof. Dr. Simón Yobanny Reyes-López

E-Mail Website
Guest Editor
Laboratorio de Materiales Híbridos Nanoestructurados, Instituto de Ciencias Biomédicas, Departamento de Ciencias Químico Biológicas, Universidad Autónoma de Ciudad Juárez, Anillo Envolvente del Pronaf y Estocolmo s/n, Zona Pronaf, Ciudad Juárez, Chihuahua, Mexico
Interests: energy; catalytic; environmental; medical applications; sol–gel; electrospinning techniques; nanosynthesis of ceramics; composites; porous materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Wastewater is one of the most important types of pollution in the water environment, and it poses a great threat to the natural environment and human health. With the increasing emphasis on sustainable management of water resources, water and wastewater treatment has become an integral part of maintaining ecosystems. Currently, various types of materials exhibit excellent performance and are increasingly used in wastewater treatment, such as sand filtration, adsorption, coagulation, flocculation, membrane separation, advanced oxidation processes, and ion exchange to remove various micro-pollutants from water. Polymers, as one of the most important functional materials, mainly include various natural and human-made materials such as polymer blends, films, fibres, cellulose, porous materials, nanocomposites, and hybrid nanomaterials. Polymeric materials show great potential as wastewater treatment materials due to their high molecular weight, complex structure, large surface area, and unique physicochemical properties.

Prof. Dr. Simón Yobanny Reyes-López
Guest Editor

Manuscript Submission Information

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Keywords

  • coagulants
  • flocculants
  • adsorbents
  • polymer separation membrane
  • polymeric materials
  • wastewater treatment
  • organic contaminants

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Published Papers (3 papers)

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Research

15 pages, 5074 KiB  
Article
A Novel PVDF Ultrafiltration Membrane Modified by C60(OH)n-Ag
by Jie Zhang, Wenjun Zhao, Chengyang Shi, Liman Zhao, Yudi Chu, Yanan Ren, Qun Wang, Yanxia Chi and Shujing Zhou
Polymers 2024, 16(23), 3359; https://doi.org/10.3390/polym16233359 - 29 Nov 2024
Cited by 1 | Viewed by 797
Abstract
Ultrafiltration membranes in the fields of water treatment and biomedicine should have high permeability as well as antibacterial and antifouling capabilities. In this study, based on the hydrophilicity of fullerol (C60(OH)n) and the bacteriostatic properties of silver (Ag), a [...] Read more.
Ultrafiltration membranes in the fields of water treatment and biomedicine should have high permeability as well as antibacterial and antifouling capabilities. In this study, based on the hydrophilicity of fullerol (C60(OH)n) and the bacteriostatic properties of silver (Ag), a fullerol–silver (C60(OH)n-Ag) complex was prepared as a multifunctional additive. A polyvinylidene fluoride (PVDF)-composited C60(OH)n-Ag ultrafiltration membrane (C60(OH)n-Ag/PVDF) was prepared by immersion precipitation phase transformation. Addition of the C60(OH)n-Ag complex improved the permeability and retention of the traditional PVDF membrane. Compared with the traditional PVDF membrane, the surface water contact angle of the modified PVDF and C60(OH)n-Ag ultrafiltration membrane was reduced from 75.05° to 34.50°, its pure water flux increased from 224.11 L·m−2·h−1 to 804.05 L·m−2·h−1, the retention rate on bovine serum protein was increased from 75.00% to 96.44% and the flux recovery rate increased from 64.91% to 79.08%. The C60(OH)n-Ag/PVDF ultrafiltration membrane had good inhibitory effects on Escherichia coli and Staphylococcus aureus, while the PVDF ultrafiltration membrane had no obvious inhibitory effects. Full article
(This article belongs to the Special Issue Polymeric Materials in Wastewater Treatment)
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14 pages, 3050 KiB  
Article
Performance Investigation of PSF-nAC Composite Ultrafiltration Membrane for Protein Separation
by Gunawan Setia Prihandana, Muslim Mahardika, Budi Arifvianto, Ario Sunar Baskoro, Yudan Whulanza, Tutik Sriani and Farazila Yusof
Polymers 2024, 16(18), 2654; https://doi.org/10.3390/polym16182654 - 20 Sep 2024
Cited by 3 | Viewed by 1164
Abstract
As a promising wastewater treatment technology, ultrafiltration membranes face challenges related to fouling and flux reduction. To enhance these membranes, various strategies have been explored. Among them, the incorporation of nano-activated carbon (nAC) powder has emerged as an effective method. In this study, [...] Read more.
As a promising wastewater treatment technology, ultrafiltration membranes face challenges related to fouling and flux reduction. To enhance these membranes, various strategies have been explored. Among them, the incorporation of nano-activated carbon (nAC) powder has emerged as an effective method. In this study, composite polysulfone (PSF) ultrafiltration membranes were fabricated using nAC powder at concentrations ranging from 0 to 8 wt.%. These membranes underwent comprehensive investigation, including assessments of membrane morphology, hydrophilicity, pure water flux, equilibrium water content, porosity, average pore size, and protein separation. The addition of activated carbon improved several desirable properties. Specifically, the hydrophilicity of the PSF membranes was enhanced, with the contact angle reduced from 69° to 58° for 8 wt.% of nAC composite membranes compared to the pristine PSF membrane. Furthermore, the water flux test revealed that 6 wt.% activated carbon-based membranes exhibited the highest flux, with a nearly 3 times improvement at 2 bar. Importantly, this enhancement did not compromise the protein rejection. Additionally, the introduction of nAC had a significant effect on the membrane’s pore size by improving lysozyme rejection up to 40%. Overall, these findings will guide the selection of the optimal concentration of nAC for PSF ultrafiltration membranes. Full article
(This article belongs to the Special Issue Polymeric Materials in Wastewater Treatment)
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25 pages, 13531 KiB  
Article
Enhanced Adsorption Performance Cross-Linked Chitosan/Citrus reticulata Peel Waste Composites as Low-Cost and Green Bio-Adsorbents: Kinetic, Equilibrium Isotherm, and Thermodynamic Studies
by Deniz Akin Sahbaz
Polymers 2023, 15(15), 3246; https://doi.org/10.3390/polym15153246 - 30 Jul 2023
Cited by 2 | Viewed by 1447
Abstract
This study revealed the synthesis of cross-linked chitosan/Citrus reticulata peel waste (C/CRPW) composites that could be used as low-cost and green bio-adsorbents for the removal of Congo red (CR) dye from aqueous solutions. C/CRPW composites containing different amounts of Citrus reticulata peel [...] Read more.
This study revealed the synthesis of cross-linked chitosan/Citrus reticulata peel waste (C/CRPW) composites that could be used as low-cost and green bio-adsorbents for the removal of Congo red (CR) dye from aqueous solutions. C/CRPW composites containing different amounts of Citrus reticulata peel waste (CRPW) and chitosan were prepared and cross-linked with glutaraldehyde. The composites were characterized by FESEM, EDS, FTIR, XRD, BET, and zeta potential measurements. The C/CRPW composites as a new type of bio-adsorbents displayed superior adsorption capability toward anionic CR molecules, and the adsorption capacities increased with the incorporation of CRPW. Effects of different ambient conditions, such as contact time, pH, adsorbent dosage, initial adsorbate concentration, and temperature, were fully studied. The conditions which obtained 43.57 mg/g of the highest adsorption capacity were conducted at pH 4 with an initial concentration of 100 mg/L, adsorbent dosage of 2.0 g/L, and contact time of 24 h at 328 K. The adsorption data was found to follow the pseudo-second-order kinetic model and the Freundlich isotherm model. According to the findings of this investigation, it was observed that the C/CRWP composites could be used as adsorbents due to their advantages, including the simple preparation process, being environmentally friendly, renewable, efficient, and low-cost. Full article
(This article belongs to the Special Issue Polymeric Materials in Wastewater Treatment)
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