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Advanced Chemical and Biological Technologies for Water Purification and Contaminant Degradation

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

Deadline for manuscript submissions: 20 June 2026 | Viewed by 2168

Special Issue Editors

Dr. Zhanghao Chen

E-Mail Website
Guest Editor
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
Interests: advanced oxidation/reduction process; emerging pollutants; radical chemistry; environmental interface reaction; contaminant degradation
Special Issues, Collections and Topics in MDPI journals
Dr. Longgang Chu

E-Mail Website
Guest Editor Assistant
State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
Interests: radical chemsitry; emerging pollutants; interface reaction; electrochemistry; iron minerals

Special Issue Information

Dear Colleagues,

Water is the source of life and one of the most important material resources for human survival and development. With the rapid development of industries and increasing human activities, such as the production and use of metal plating, fertilizers, tanneries, mining, paper, batteries, pesticides, etc., many harmful inorganic and organic pollutants are released into water, which seriously endangers freshwater resources and the ecological environment. Consequently, an urgent need arises for the development of highly efficient water purification techniques aimed at degrading various contaminants. These treatment processes will protect safe and reliable water resources and may help in promoting sustainable development. Advanced chemical and biotechnological methods are widely used in water treatment, but they still require further development, including advancements in pollutant degradation mechanisms, improvements in efficiency and environmental friendliness, and reductions in cost. In this Special Issue of Water, we focus on Advanced Chemical and Biological Technologies for Water Purification and Contaminant Degradation, encouraging the submission of studies that involving environmentally friendly, laboratory- and field-scale control and treatment of contaminants.

Dr. Zhanghao Chen
Guest Editor

Dr. Longgang Chu
Guest Editor Assistant

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 250 words) can be sent to the Editorial Office for assessment.

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

  • advanced oxidation and reduction
  • photocatalysis and electrocatalysis
  • biotechnologies
  • radical chemistry
  • contaminant degradation

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Published Papers (2 papers)

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Research

13 pages, 2239 KB  
Article
Efficient Removal of Dissolved Organic Matter via a Hybrid UV/O3 Micro-Nano Bubble Process
by Haijun Ma, Quan Zhang, Tao Zhou, Nongcun Wang, Shulei Hou, Jun Liu and Zhanghao Chen
Water 2026, 18(7), 864; https://doi.org/10.3390/w18070864 - 3 Apr 2026
Viewed by 287
Abstract
Removing trace amounts of dissolved organic matter (DOM) has always been a significant issue in the field of environmental science and engineering. Herein, a UV-coupled O3 micro-nano bubble (O3-MNB) system was constructed, demonstrating superior efficiency in eliminating DOM compared to [...] Read more.
Removing trace amounts of dissolved organic matter (DOM) has always been a significant issue in the field of environmental science and engineering. Herein, a UV-coupled O3 micro-nano bubble (O3-MNB) system was constructed, demonstrating superior efficiency in eliminating DOM compared to bulk O3-MNB oxidation and direct UV photolysis. Various advanced analytical techniques, including in situ electron paramagnetic resonance, Fourier transform infrared spectroscopy and three-dimensional excitation–emission matrix, were employed to reveal the mechanism of the reaction process. Benefiting from the abundant interfacial area and enhanced mass transfer efficiency provided by the micro-nano bubbles, along with the simultaneous generation of reactive oxygen species such as •OH through UV activation, the UV/O3-MNB system demonstrates excellent performance in removing DOM, and more than 90% of the mineralization rate was achieved after 1 h reaction. Furthermore, the findings were verified using both municipal water and natural surface water, and the proposed system also shows advantages in energy consumption compared to direct UV irradiation and conventional O3 treatment, with an energy consumption of 25 kWh/mg dissolved organic carbon. This study innovatively integrates UV light with O3-MNB technology, offering novel insights for advanced water purification and providing valuable references for practical engineering applications. Full article
(This article belongs to the Special Issue Advanced Chemical and Biological Technologies for Water Purification and Contaminant Degradation)
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20 pages, 2618 KB  
Article
Advanced Oxidation of Dexamethasone by Activated Peroxo Compounds in Water Matrices: A Comparative Study
by Liina Onga, Niina Dulova and Eneliis Kattel-Salusoo
Water 2025, 17(15), 2303; https://doi.org/10.3390/w17152303 - 3 Aug 2025
Viewed by 1300
Abstract
The continuous occurrence of steroidal pharmaceutical dexamethasone (DXM) in aqueous environments indicates the need for an efficient removal technology. The frequent detection of DXM in surface water could be substantially reduced by the application of photo-induced advanced oxidation technology. In the present study, [...] Read more.
The continuous occurrence of steroidal pharmaceutical dexamethasone (DXM) in aqueous environments indicates the need for an efficient removal technology. The frequent detection of DXM in surface water could be substantially reduced by the application of photo-induced advanced oxidation technology. In the present study, Fe2+ and UVA-light activated peroxo compounds were applied for the degradation and mineralization of a glucocorticoid, 25.5 µM DXM, in ultrapure water (UPW). The treatment efficacies were validated in real spring water (SW). A 120 min target pollutant degradation followed pseudo first-order reaction kinetics when an oxidant/Fe2+ dose 10/1 or/and UVA irradiation were applied. Acidic conditions (a pH of 3) were found to be more favorable for DXM oxidation (≥99%) regardless of the activated peroxo compound. Full conversion of DXM was not achieved, as the maximum TOC removal reached 70% in UPW by the UVA/H2O2/Fe2+ system (molar ratio of 10/1) at a pH of 3. The higher efficacy of peroxymonosulfate-based oxidation in SW could be induced by chlorine, bicarbonate, and carbonate ions; however, it is not applicable for peroxydisulfate and hydrogen peroxide. Overall, consistently higher efficacies for HO•-dominated oxidation systems were observed. The findings from the current paper could complement the knowledge of oxidative removal of low-level DXM in real water matrices. Full article
(This article belongs to the Special Issue Advanced Chemical and Biological Technologies for Water Purification and Contaminant Degradation)
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