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New Perspectives for Water Quality and Wastewater Remediation: Advanced Oxidation...
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New Perspectives for Water Quality and Wastewater Remediation: Advanced Oxidation Processes and Toxicity Assessments

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 927

Special Issue Editors

Dr. Christina Nannou

E-Mail Website
Guest Editor
Department of Chemistry, Democritus University of Thrace, Kavala, Greece
Interests: environmnetal analysis; water quality; emerging contaminants; environmental mass spectrometry; high-resolution mass spectrometry; novel sample preparation; remediation technologies; AOPs; transformation products; toxicity assessments
Special Issues, Collections and Topics in MDPI journals
Dr. Vasiliki Boti

E-Mail Website
Guest Editor
Chemistry Department, University of Ioannina, 45110 Ioannina, Greece
Interests: analytical extraction methodologies; toxic micropollutants; high-resolution mass spectrometry–Orbitrap technology; wastewater treatment technologies; environmental substrates and food commodity analysis; risk assessments; chemometrics; environmental outcomes; AOPs; transformation product identification
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are thrilled to introduce the Special Issue “New Perspectives for Water Quality and Wastewater Remediation: Advanced Oxidation Processes and Toxicity Assessments”, featured in the esteemed open access journal, Water, published by MDPI. This Special Issue serves as a comprehensive platform for the exchange of knowledge, research findings, and innovative approaches related to both water quality and purification, wastewater remediation—focusing on AOPs—and toxicity assessments, with a focus on assuring environmental safety.

The growth in the global population and urbanization, dwindling clean water supplies, increased environmental concerns, and the strong link between water quality and human health necessitate the identification and implementation of effective sustainable water purification and wastewater treatments to meet the urgent global demand for adequate, safe, and easily available water resources. Overcoming the crisis of sustainable water resources and wastewater management is of the utmost importance.

The promotion of the safe use of purified water and the affordable and adequate availability of wastewater treatment techniques are major steps toward sustainable wastewater management. The gap between the standard achieved by traditional physico-chemical and biological treatments and the more stringent daily limits set by environmental regulations is closed by Advanced Oxidation Processes (AOPs). AOPs have shown tremendous promise for water purification and wastewater and industrial wastewater treatment, including the elimination of contaminants of emerging concern, pesticides, naturally occurring toxins, and other deleterious anthropogenic pollutants. AOPs cannot yet be regarded as mature, despite significant advancements, and there are still many unexplored areas that merit further study. In addition, chemical analyses can only detect a few pollutants, which are not always consistent with the toxic effects of wastewater. Toxicity tests reveal adverse biological effects on mixed pollutants in WWTPs, which can be used to indirectly assess the efficiency of wastewater removal. A variety of toxicity tests have been developed to assess the negative effects of wastewater, based on previous studies using bacteria, microalgae, invertebrates, plants, and fish, with some focusing on only one or a small number of test species.

This Special Issue warmly welcomes original research articles, reviews, case studies, and critical analyses that delve into and address the following issues:

  • New challenges in wastewater treatment;
  • Wastewater remediation;
  • Water purification;
  • Water quality;
  • Advanced Oxidation Processes;
  • Photoinduced processes;
  • Transformation products;
  • Toxicity assessments.

Yours faithfully,

Dr. Christina Nannou
Dr. Vasiliki Boti
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. Water 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 2600 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

  • wastewater treatment
  • water purification
  • water quality
  • water safety
  • emerging conataminants
  • water remediation
  • AOPs
  • transformation products
  • toxicity assessments
  • environmental risk
  • environmental safety

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Published Papers (1 paper)

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Research

19 pages, 7115 KiB  
Article
N-Chloramine Functionalized Polymer Gels for Point-of-Use Water Disinfection
by Ana Estrella-You, Israt Jahan Duti, Qinmo Luo, Jamie D. Harris, Rachel A. Letteri and James A. Smith
Water 2024, 16(21), 3128; https://doi.org/10.3390/w16213128 - 1 Nov 2024
Viewed by 714
Abstract
Combinations of metal disinfectants (i.e., silver and copper) with chlorine in doses that meet the World Health Organization guidelines for drinking water operate synergistically to provide superior drinking water disinfection across a wide range of pathogens. Moreover, the combination of disinfectants allows for [...] Read more.
Combinations of metal disinfectants (i.e., silver and copper) with chlorine in doses that meet the World Health Organization guidelines for drinking water operate synergistically to provide superior drinking water disinfection across a wide range of pathogens. Moreover, the combination of disinfectants allows for lower chlorine levels and a less objectionable taste and odor to the treated water (some people can taste or smell chlorine at concentrations as low as 300 μg/L). Towards chlorine-releasing materials for combination with silver- or copper-releasing materials in point-of-use water disinfection, N-chloramine containing polymer gels were developed and their potential for E. coli bacteria inactivation was assessed in deionized water that contained salts to simulate groundwater. Following the chlorination of gels containing chloramine precursors, these gels capably inactivated E. coli, achieving log10 reductions—depending on the gel mass—ranging from 1.1 to 4.5. While chlorine released from the gels was not spectroscopically detected, free chlorine solutions inactivated E. coli in a concentration-dependent way, with 5 and 20 μg/L Cl2 yielding log10 reductions of 0.43 and 1.69, respectively, suggesting that low levels of chlorine, below both the limit of detection of spectroscopic assays (ca. 40 μg/L Cl2) and levels known to create adverse taste and smell, are sufficient to inactivate bacteria. Unchlorinated gels or chlorinated control styrene gels (without chloramine precursor) did not inactivate bacteria, suggesting that disinfection did not come from the precursor or from chlorine trapped in the gels after chlorination. In addition, these gels were evaluated together with the MadiDrop (MD, a commercial silver-ceramic tablet) and a copper screen that release silver and copper disinfectants, respectively. Combinations of the gel and MD produced E. coli inactivation close to 2-log10 reduction, with the combination, gels alone, and MD alone achieving 1.86-, 1.10-, and 0.69-log10 reduction, respectively. When the gels were combined with the copper screen, however, neither an increase nor a decrease in bacterial reduction was observed compared to that achieved with the gels alone. The laboratory results in this study are promising and suggest the potential for chloramine-functionalized gels to serve as an alternative to existing commercial chlorine-based POU technologies and in combination with silver-based POU technologies. Full article
(This article belongs to the Special Issue New Perspectives for Water Quality and Wastewater Remediation: Advanced Oxidation Processes and Toxicity Assessments)
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