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Advanced Oxidation Processes toward Challenges in Contaminants of Emerging Concern...
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Advanced Oxidation Processes toward Challenges in Contaminants of Emerging Concern Treatment

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Environmental and Green Processes".

Deadline for manuscript submissions: closed (30 December 2024) | Viewed by 4458

Special Issue Editors

Dr. Jelena Molnar Jazić

E-Mail Website
Guest Editor
Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, 21000 Novi Sad, Serbia
Interests: advanced oxidation processes; SR-AOPs; chlorination; water treatment; emerging substances; disinfection by-products; environmental protection
Dr. Thillai Sivakumar Natarajan

E-Mail Website
Guest Editor
Environmental Science Laboratory, CSIR-Central Leather Research Institute (CSIR-CLRI), Chennai 600020, Tamil Nadu, India
Interests: liquid and solid waste management; nanomaterials; catalysis; advanced oxidation processes; environmental pollutants treatment; value addition of wastes; renewable energy (hydrogen and bioenergy) production

Special Issue Information

Dear Colleagues,

Nowadays, drinking water sources are becoming increasingly vulnerable and the demand for municipal and industrial wastewater treatment and reuse is increasing, aiming at circular economy principles. Water scarcity is already driving the urgent need for the improvement of water treatment, especially dealing with the challenges posed by contaminants of emerging concern (CECs) including personal care products and pharmaceuticals, metals, perfluorinated compounds, pesticides, disinfection by-products, microplastics, etc. Recent water treatment research has highlighted the ability of advanced oxidation processes (AOPs) to treat a wide variety of contaminants, going beyond the effectiveness of conventional water treatment technologies.

This Special Issue of Processes highlights the recent progress in the field of groundwater and surface water treatment, wastewater treatment toward water/sewage sludge reuse and energy recovery, and contaminated site remediation. We are pleased to invite you to contribute relevant research articles and reviews focusing on (but not limited to) the following topics:

  • Behavior and fate of CECs during the advanced oxidation: reaction kinetics and mechanisms, degradation by-products and toxicological aspects;
  • Hydroxyl and sulfate radicals based homogeneous AOPs (O3/H2O2, UV/H2O2; UV/persulfate, chlorine-based AOPs, Fenton process);
  • Heterogeneous photocatalysis;
  • Renewable energy sources and green low-cost materials in AOPs;
  • Progress in reactor design and AOPs pilot plant investigation.

Dr. Jelena Molnar Jazić
Dr. Thillai Sivakumar Natarajan
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. Processes 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 2400 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
  • water treatment
  • emerging and priority substances
  • hydroxyl and sulfate radicals oxidation
  • photodegradation
  • renewable energy
  • green materials

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Published Papers (2 papers)

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Research

18 pages, 3436 KiB  
Article
Degradation of Hydroxychloroquine from Aqueous Solutions Under Fenton-Assisted Electron Beam Treatment
by Stephen Kabasa, Shizong Wang, Yongxia Sun, Jianlong Wang and Sylwester Bulka
Processes 2024, 12(12), 2860; https://doi.org/10.3390/pr12122860 - 13 Dec 2024
Cited by 2 | Viewed by 879
Abstract
Challenges in the treatment and removal of recalcitrant emerging organic pollutants in wastewater prompt the development of advanced oxidative processes (AOPs). Hydroxyl radicals are non-specific and capable of reacting with a diverse range of pollutants of emerging concern. In this study, hydroxychloroquine (HCQ) [...] Read more.
Challenges in the treatment and removal of recalcitrant emerging organic pollutants in wastewater prompt the development of advanced oxidative processes (AOPs). Hydroxyl radicals are non-specific and capable of reacting with a diverse range of pollutants of emerging concern. In this study, hydroxychloroquine (HCQ) was removed from aqueous solutions with removal efficiencies between 80 and 90%. The presence of H2O2, humic acid, and other inorganic ions negatively influenced the degradation efficiency. However, the presence of S2O82− was found to increase the removal efficiency, which was attributed to the formation of SO4•− in addition to •OH radicals. Additionally, Fenton-assisted electron beam treatment showed an improved removal of 2.88 × 10−4 M of HCQ with an average improvement of ≈10% at doses between 0.5 to 2.0 kGy in addition to the total organic carbon and chemical oxygen demand reduction. The H2O2 concentration and molar ratio of H2O2: Fe2+ influenced the removal capacity of the Fenton-assisted electron beam process. A degradation mechanism for HCQ has been proposed based on the reactions of •OH radicals and eaq−. Full article
(This article belongs to the Special Issue Advanced Oxidation Processes toward Challenges in Contaminants of Emerging Concern Treatment)
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23 pages, 3458 KiB  
Article
New Insight into the Degradation of Sunscreen Agents in Water Treatment Using UV-Driven Advanced Oxidation Processes
by Tajana Simetić, Jasmina Nikić, Marija Kuč, Dragana Tamindžija, Aleksandra Tubić, Jasmina Agbaba and Jelena Molnar Jazić
Processes 2024, 12(6), 1156; https://doi.org/10.3390/pr12061156 - 3 Jun 2024
Cited by 2 | Viewed by 1905
Abstract
This study evaluates, for the first time, the effects of UV/PMS and UV/H2O2/PMS processes on the degradation of sunscreen agents in synthetic and natural water matrices and compares their effectiveness with the more conventional UV/H2O2. [...] Read more.
This study evaluates, for the first time, the effects of UV/PMS and UV/H2O2/PMS processes on the degradation of sunscreen agents in synthetic and natural water matrices and compares their effectiveness with the more conventional UV/H2O2. Investigations were conducted using a mixture of organic UV filters containing 4-methylbenzylidene camphor (4-MBC) and 2-ethylhexyl-4-methoxycinnamate. Among the investigated UV-driven AOPs, UV/PMS/H2O2 was the most effective in synthetic water, while in natural water, the highest degradation rate was observed during the degradation of EHMC by UV/PMS. The degradation of UV filters in the UV/PMS system was promoted by sulfate radical (68% of the degradation), with hydroxyl radical contributing approximately 32%, while both radical species contributed approximately equally to the degradation in the UV/H2O2/PMS system. The Vibrio fischeri assay showed an increase in inhibition (up to 70%) at specific stages of UV/H2O2 treatment when applied to natural water, which further decreased to 30%, along with an increase in UV fluence and progressive degradation. The Pseudomonas putida test recorded minor toxicity (<15%) after treatments. Magnetic biochar utilized in conjunction with UV-driven AOPs exhibited superior performance in eliminating residual contaminants, providing an efficient and sustainable approach to mitigate sunscreen agents in water treatment. Full article
(This article belongs to the Special Issue Advanced Oxidation Processes toward Challenges in Contaminants of Emerging Concern Treatment)
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