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Application of Advanced Oxidation Technologies in Water and Wastewater Purification
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Application of Advanced Oxidation Technologies in Water and Wastewater Purification

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

Deadline for manuscript submissions: 30 May 2025 | Viewed by 2377

Special Issue Editor

Dr. Yi Ren

E-Mail Website
Guest Editor
College of Water Resource & Hydropower, Sichuan University, Chengdu, China
Interests: water environment remediation; wastewater treatment; advanced oxidation processes; Fenton-like oxidation; membrane technology;

Special Issue Information

Dear Colleagues,

In the face of pollution of the water environment, it is necessary to control the pollutants that are discharged into nature. The development of advanced oxidation processes for water purification is a promising way to control the pollution of natural water and wastewater discharge. In recent years, a number of studies have tried to develop novel advanced oxidation processes to treat the pollutants in water with high efficiency and a low cost. However, existing technologies are not sufficient for various pollutant treatments, and the decontamination performance and cost-effectiveness of treatments need to be further strengthened. For this Special Issue in Water, manuscripts are solicited that describe novel advanced oxidation processes for different pollutant decontamination processes in real or simulated wastewater and natural water. This Special Issue welcomes articles on related topics, including but not limited to decontamination performance enhancement by catalyst modification and coupling process improvement of traditional advanced oxidation processes, new active species development, mechanism investigations, the effects of developed advanced oxidation processes for real wastewater/natural water, and new advanced oxidation process exploration such as non-thermal plasma and electron beam oxidation. Critical reviews on new technologies of advanced oxidation processes are also invited for this Special Issue. We hope that this Special Issue will provide support for pollutant control in water.

Dr. Yi Ren
Guest Editor

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

  • water purification
  • wastewater treatment
  • water restoration
  • emerging contaminants
  • advanced oxidation processes
  • Fenton-like oxidation
  • photocatalysis
  • electrocatalysis
  • ozonation
  • non-thermal plasma
  • electron beam

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Published Papers (3 papers)

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Research

20 pages, 17376 KiB  
Article
Carbonization of N/P Co-Doped Resin for Metal-Free Catalytic Ozonation of Oxalic Acid
by Yixiong Pang, Yu Pan, Lingjun Kong, Zenghui Diao and Bin Li
Water 2025, 17(5), 710; https://doi.org/10.3390/w17050710 - 28 Feb 2025
Viewed by 402
Abstract
In this study, a millimeter-scale N/P-doped carbonaceous catalyst was synthesized via facile carbonization of the N/P-doped resin at 800 °C (NPCR-800). This work aimed to investigate the performance of the NPCR-800 catalyst in heterogeneous catalytic ozonation and the mechanism of reactive oxygen species [...] Read more.
In this study, a millimeter-scale N/P-doped carbonaceous catalyst was synthesized via facile carbonization of the N/P-doped resin at 800 °C (NPCR-800). This work aimed to investigate the performance of the NPCR-800 catalyst in heterogeneous catalytic ozonation and the mechanism of reactive oxygen species (ROS) generation. The NPCR-800 achieved the highest oxalic acid (OA) degradation efficiency of 91% within 40 min. The first-order kinetics of OA degradation in the NPCR-800/O3 system was approximately twelve and three times higher than that in the O3 and O3/GAC system, respectively. In addition to excellent catalytic ozonation performance, the NPCR catalyst also exhibited good reusability and salt tolerance. The dominant ROS were identified by the electronic spin response and free radical quantitative experiments, being responsible for oxalic acid degradation in NPCR-800/O3 system. The effect of the doped N and P elements on enhancing the catalytic activity was understood, what was ascribed to the efficient reaction of the O3 molecule with the active site of the graphitic N, defect site and carbonyl/carboxyl groups of NPCR to generate the hydroxyl radical and singlet oxygen. A type of metal-free catalytic ozonation strategy was developed in this work, which is promising in the practical treatment of the refractory organic pollutants. Full article
(This article belongs to the Special Issue Application of Advanced Oxidation Technologies in Water and Wastewater Purification)
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14 pages, 4614 KiB  
Article
Ozonation Treatment of Simulated Wastewater Containing Characteristic Pollutants from the Petrochemical Industry
by Yangyang Zhou, Zhilin Yang, Siqi Chen, Wenquan Sun and Yongjun Sun
Water 2025, 17(4), 605; https://doi.org/10.3390/w17040605 - 19 Feb 2025
Viewed by 539
Abstract
This study investigated key factors in the petrochemical industry and evaluated the oxidation performance of ozonation catalytic oxidation for treating phenol-simulated wastewater and actual wastewater spiked with phenol. In simulated phenol wastewater, optimal conditions (ozone dosage of 8 mg/L/min, pH 11, total dissolved [...] Read more.
This study investigated key factors in the petrochemical industry and evaluated the oxidation performance of ozonation catalytic oxidation for treating phenol-simulated wastewater and actual wastewater spiked with phenol. In simulated phenol wastewater, optimal conditions (ozone dosage of 8 mg/L/min, pH 11, total dissolved solids (TDSs) of 1000 mg/L, and initial phenol concentration of 50 mg/L) yielded a maximum chemical oxygen demand (COD) removal rate of 90.60%. For actual wastewater spiked with phenol under the same conditions, maximum removal rates of phenol, COD, and total organic carbon (TOC) were 65.45%, 63.57%, and 79.65%, respectively. The degradation mechanisms and changes in organic matter during ozonation were analyzed using three-dimensional fluorescence spectroscopy, ultraviolet spectroscopy, and gas chromatography–mass spectrometry (GC-MS). The findings demonstrate that ozonation oxidation is an effective wastewater treatment method, significantly reducing pollutant concentrations and enhancing water quality. Full article
(This article belongs to the Special Issue Application of Advanced Oxidation Technologies in Water and Wastewater Purification)
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9 pages, 1924 KiB  
Article
Vortex–Swirl Flow Results in Microbubble-Enhanced Transient Water Properties: A Time-Resolved Analysis from Fine-Bubble Engineering
by Niall J. English and Cees M. B. Kamp
Water 2024, 16(24), 3565; https://doi.org/10.3390/w16243565 - 11 Dec 2024
Viewed by 1002
Abstract
The inward vortex–swirl-type motion of convective, rectilinear water flow has been studied vis-à-vis its propensity for bubble formation, with a particular focus on the microbubble region. It has been found that a large population of smaller microbubbles, around 1 μm in diameter, is [...] Read more.
The inward vortex–swirl-type motion of convective, rectilinear water flow has been studied vis-à-vis its propensity for bubble formation, with a particular focus on the microbubble region. It has been found that a large population of smaller microbubbles, around 1 μm in diameter, is created in the process of these types of motions, and the time-dependent behaviour of this “micro-bubbly” water is analysed as Stokes’ law for microbubble dissipation occurs, such as bubble population, dissolved oxygen, pH, etc. Exponential decay analysis on the DLS-measured microbubble populations gave relaxation times τ of ~2.4 h and 3.6 h in exp(−t/τ) fits for DI and filtered tap water, respectively. The downward shift in pH was about 0.08 ± 0.016 and 0.11 ± 0.018 for DI and filtered tap water, respectively. For DI water, the level of dissolved oxygen (DO) at room temperature of 19 °C was ~102% at “t = 0”, and it declined to ~87% within 3 h (with the unprocessed background sample being about 84 ± 1.1%). The respective DO decay results in the case of the filtered tap water (at 19 °C) were ~105% at “t = 0”, declining to 91% within 3 h (background = 86 ± 1.2%). This allows for the dynamic properties to be understood in the context of how microbubbles determine the observed properties of post-flow water, including rationalising the observations of its time-transient properties. Naturally, this may well be of interest in gas transfer optimisation in the growing field of “fine-bubble engineering”. Full article
(This article belongs to the Special Issue Application of Advanced Oxidation Technologies in Water and Wastewater Purification)
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