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Membranes
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Advanced Membrane Technologies in Removal of Pollutants in Aqueous Systems
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Advanced Membrane Technologies in Removal of Pollutants in Aqueous Systems

A special issue of Membranes (ISSN 2077-0375). This special issue belongs to the section "Membrane Applications".

Deadline for manuscript submissions: closed (20 September 2023) | Viewed by 6162

Special Issue Editors

Dr. Daniel A. Palacio

E-Mail Website
Guest Editor
Departamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Concepción 4030000, Chile
Interests: complex polyelectrolytes; hydrogels; (nano)composites; biobased materials; agricultural applications; biopolymer modification; ultrafiltration processes; removal of emerging organic pollutants; functional polymers
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Bernabé L. Rivas Quiroz

E-Mail Website
Guest Editor
Departamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Concepción 4030000, Chile
Interests: materials science; membranes; nanocomposites; functional polymers; biopolymers; removal of inorganic and organic pollutants
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Advances in membrane technologies have increased in recent years due to the need to address different applications worldwide. In particular cases, there are a variety of studies that demonstrate the great utility and versatility that membrane technologies display, providing solutions to needs that we are faced with daily. One of the challenges worldwide is to be able to eliminate different organic and inorganic polluting substances from aqueous systems, which cause serious environmental and human health problems, thus having an impact on economic losses around the world.

In this Special Issue entitled "Advanced Membrane Technologies in Removal of Pollutants in Aqueous Systems", we seek contributions in the field of advancements in membrane technologies with applications in the removal of contaminants in water, especially the removal of emerging contaminants of organic origin, such as antibiotics, endocrine disruptors, dyes, analgesics, and pesticides, among others, and contaminants of inorganic origin, such as heavy metals, oxyanions, etc. However, we will also accept manuscripts in the field of membranes applied to desalination processes and applications of other types of pollutants, including the synthesis and characterization of membranes/(nano)composite membranes, as well as hybrid methods with membranes.

In this Special Issue, original research articles and reviews are welcome. We look forward to receiving your contributions.

Dr. Daniel A. Palacio
Prof. Dr. Bernabé L. Rivas Quiroz
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. Membranes is an international peer-reviewed open access monthly 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

  • polymeric membranes
  • nanocomposites membranes
  • functionalized membranes
  • removal of pollutants
  • emerging pollutants
  • inorganic pollutants
  • organic pollutants
  • water purification

Published Papers (3 papers)

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Research

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15 pages, 4005 KiB  
Article
Study of the Efficiency of a Polycation Using the Diafiltration Technique in the Removal of the Antibiotic Oxytetracycline Used in Aquaculture
by Daniel A. Palacio, Pablo Oñate, Samir Esquivel, Manuel Meléndrez, Eduardo Pereira and Bernabé L. Rivas
Membranes 2023, 13(10), 828; https://doi.org/10.3390/membranes13100828 - 10 Oct 2023
Viewed by 1196
Abstract
The presence of antibiotics in aquatic systems in recent years has become a global environmental and public health concern due to the appearance of strains resistant to these antibiotics. Oxytetracycline (OXT) is a high-impact antibiotic used for both human and veterinary consumption, and [...] Read more.
The presence of antibiotics in aquatic systems in recent years has become a global environmental and public health concern due to the appearance of strains resistant to these antibiotics. Oxytetracycline (OXT) is a high-impact antibiotic used for both human and veterinary consumption, and it is the second most used antibiotic in aquaculture in Chile. Based on the above, this problem is addressed using a linear polymer whose structure is composed of aromatic rings and quaternary ammonium groups, which will help enhance the removal capacity of this antibiotic. To obtain the polycation, a radical polymerization synthesis was carried out using (4-vinylbenzyl)-trimethylammonium chloride as the monomer. The polycation was characterized via Fourier Transform Infrared spectroscopy (FTIR) and Nuclear Magnetic Resonance (NMR). The removal studies were conducted under different experimental conditions such as pH levels (3.0, 5.0, 7.0, 8.0, and 11.0), ionic strength (0.0–0.50 mg L−1 of NaCl), polymer dose (0.25–25.5 mg), variation of the antibiotic concentration (1–100 mg L−1), and evaluation of the maximum retention capacity, as well as load and discharge studies. The antibiotic retention removal was higher than 80.0%. The antibiotic removal performance is greatly affected by the effect of pH, ionic strength, molar ratio, and/or OXT concentration, as these parameters directly affect the electrostatic interactions between the polymer and the antibiotics. The diafiltration technique was shown to be highly efficient for the removal of OXT, with maximum removal capacities of 1273, 966, and 778 mg OXT g−1 polycation. In conclusion, it can be said that coupling water-soluble polymers to the diafiltration technique is an excellent low-cost way to address the problem of antibiotics in aquatic systems. Full article
(This article belongs to the Special Issue Advanced Membrane Technologies in Removal of Pollutants in Aqueous Systems)
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24 pages, 2195 KiB  
Article
Bio-Based Polymeric Membranes: Development and Environmental Applications
by Mónica Morales-Jiménez, Daniel A. Palacio, Manuel Palencia, Manuel F. Meléndrez and Bernabé L. Rivas
Membranes 2023, 13(7), 625; https://doi.org/10.3390/membranes13070625 - 27 Jun 2023
Cited by 3 | Viewed by 1936
Abstract
Nowadays, membrane technology is an efficient process for separating compounds with minimal structural abrasion; however, the manufacture of membranes still has several drawbacks to being profitable and competitive commercially under an environmentally friendly approach. In this sense, this review focuses on bio-based polymeric [...] Read more.
Nowadays, membrane technology is an efficient process for separating compounds with minimal structural abrasion; however, the manufacture of membranes still has several drawbacks to being profitable and competitive commercially under an environmentally friendly approach. In this sense, this review focuses on bio-based polymeric membranes as an alternative to solve the environmental concern caused by the use of polymeric materials of fossil origin. The fabrication of bio-based polymeric membranes is explained through a general description of elements such as the selection of bio-based polymers, the preparation methods, the usefulness of additives, the search for green solvents, and the characterization of the membranes. The advantages and disadvantages of bio-based polymeric membranes are discussed, and the application of bio-based membranes to recover organic and inorganic contaminants is also discussed. Full article
(This article belongs to the Special Issue Advanced Membrane Technologies in Removal of Pollutants in Aqueous Systems)
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Review

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22 pages, 954 KiB  
Review
Effect of Operating Parameters on the Performance of Integrated Fixed-Film Activated Sludge for Wastewater Treatment
by Sharjeel Waqas, Noorfidza Yub Harun, Nonni Soraya Sambudi, Kunmi Joshua Abioye, Muhammad Hamad Zeeshan, Abulhassan Ali, Aymn Abdulrahman, Loai Alkhattabi and Ahmad S. Alsaadi
Membranes 2023, 13(8), 704; https://doi.org/10.3390/membranes13080704 - 28 Jul 2023
Cited by 10 | Viewed by 2575
Abstract
Integrated fixed-film activated sludge (IFAS) is a hybrid wastewater treatment process that combines suspended and attached growth. The current review provides an overview of the effect of operating parameters on the performance of IFAS and their implications for wastewater treatment. The operating parameters [...] Read more.
Integrated fixed-film activated sludge (IFAS) is a hybrid wastewater treatment process that combines suspended and attached growth. The current review provides an overview of the effect of operating parameters on the performance of IFAS and their implications for wastewater treatment. The operating parameters examined include hydraulic retention time (HRT), solids retention time (SRT), dissolved oxygen (DO) levels, temperature, nutrient loading rates, and aeration. Proper control and optimization of these parameters significantly enhance the treatment efficiency and pollutant removal. Longer HRT and appropriate SRT contribute to improved organic matter and nutrient removal. DO levels promote the growth of aerobic microorganisms, leading to enhanced organic matter degradation. Temperature influences microbial activity and enzymatic reactions, impacting treatment efficiency. Nutrient loading rates must be carefully managed to avoid system overload or inhibition. Effective aeration ensures uniform distribution of wastewater and biofilm carriers, optimizing contact between microorganisms and pollutants. IFAS has been used in water reuse applications, providing a sustainable and reliable water source for non-potable uses. Overall, IFAS has proven to be an effective and efficient treatment process that can provide high-quality effluent suitable for discharge or reuse. Understanding the effects of these operating parameters helps to optimize the design and operation for efficient wastewater treatment. Further research is needed to explore the interactions between different parameters, evaluate their impact under varying wastewater characteristics, and develop advanced control strategies for improved performance and sustainability. Full article
(This article belongs to the Special Issue Advanced Membrane Technologies in Removal of Pollutants in Aqueous Systems)
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