Advanced Oxidation Processes: Applications and Prospects, 2nd Volume

Topic Information

Dear Colleagues,

Currently, advanced oxidation technologies have begun to be taken seriously as green technologies and are highly efficient in terms of final yields since they are chemical reactions that can be controlled and directed according to the end goals in each case. Thus far, they have been considered emerging technologies to be of little application at the industrial level as they are commonly considered relatively expensive compared with conventional technologies. This consideration is not entirely true since, in many cases, the investment and operating costs of these technologies can be low as they are simple technologies, and with the right choice of materials and equipment, they can be attractive technologies from an industrial and economic point of view. Regarding operating costs (chemicals and energy costs), these costs depend on the geographical area where the industrial plant is finally located. The degree of previous optimization of these technologies is also important in each case, which usually implies a notable reduction in costs, especially when considering the circular economy of the processes in which these technologies are applied.

Advanced oxidation technologies can be used individually or incorporated into more complete processes or bioprocesses. In this sense and as a non-limiting example, they can be applied in wastewater treatment as a main technology/for pretreatment or as a final operation for the adjustment of the final percentages required by current legislation.

The editors of the first edition of this topic are pleased to launch the second edition, which is a continuation of the work presented in the first edition given the good reception and the great interest shown by the high level of authors’ participation. This second edition is being launched to give new authors a chance to disclose and publish their results, and previous authors who participated in the first edition are invited to contribute again with new results and technologies.

This second volume is a multidisciplinary topic of the journals Catalysts, Processes, Sci, and Water; the aim is to extend our knowledge of the current state of the art related to current and possible future applications of advanced oxidation processes.

Prof. Dr. Gassan Hodaifa
Prof. Dr. Antonio Zuorro
Dr. Joaquín R. Dominguez
Prof. Dr. Juan García Rodríguez
Prof. Dr. José A. Peres
Dr. Zacharias Frontistis
Dr. Mha Albqmi
Topic Editors

Keywords

Participating Journals

Journal Name	Impact Factor	CiteScore	Launched Year	First Decision (median)	APC
Catalysts catalysts	3.8	6.8	2011	13.9 Days	CHF 2200	Submit
Processes processes	2.8	5.1	2013	14.9 Days	CHF 2400	Submit
Sci sci	-	4.5	2019	37.1 Days	CHF 1200	Submit
Water water	3.0	5.8	2009	17.5 Days	CHF 2600	Submit
Sustainability sustainability	3.3	6.8	2009	19.7 Days	CHF 2400	Submit

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Published Papers (7 papers)

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22 pages, 4725 KiB  

Open AccessReview

Advances in Ozone Technology for Environmental, Energy, Food and Medical Applications

by Kang Zhang, Jianzheng Liu, Hongkun Lv, Xianyang Zeng, Zhongqian Ling, Liwei Ding and Chenyang Jin

Processes 2025, 13(4), 1126; https://doi.org/10.3390/pr13041126 - 9 Apr 2025

Viewed by 372

Abstract

Ozone (O₃), a strong oxidizing agent, has found widespread applications since its structure was confirmed by Schubbe in 1839. It can be produced through ultraviolet radiation, electrochemical methods, or dielectric barrier discharge (DBD), with DBD being the most efficient for large-scale [...] Read more.

Ozone (O₃), a strong oxidizing agent, has found widespread applications since its structure was confirmed by Schubbe in 1839. It can be produced through ultraviolet radiation, electrochemical methods, or dielectric barrier discharge (DBD), with DBD being the most efficient for large-scale production due to its high stability. Ozone is widely used in environmental management, particularly in water treatment, air pollution control, and soil remediation. In water treatment, ozone effectively removes microorganisms and contaminants without generating secondary pollutants. In air pollution control, it degrades organic compounds in industrial waste and neutralizes toxic gases in automobile exhausts. Ozone also breaks down persistent pollutants like polycyclic aromatic hydrocarbons in soil, improving soil quality. However, challenges remain related to ozone’s stability and high production costs. Beyond environmental uses, ozone is critical in industries and medicine. It helps remove pathogens and heavy metals in wastewater treatment, extends shelf life and deactivates mycotoxins in food processing, and shows promise in medical fields like orthopedics and cancer therapy. In the power industry, ozone plays a key role in water treatment and air purification. Overall, ozone technology offers significant potential for both environmental and industrial applications. Full article

(This article belongs to the Topic Advanced Oxidation Processes: Applications and Prospects, 2nd Volume)

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29 pages, 4271 KiB  

Open AccessArticle

Synergistic Degradation of Organic Contaminants in Landfill Leachates Using Catalytic Ozonation with Magnetite

by Dorance Becerra-Moreno, Fiderman Machuca-Martínez, Luisa F. Ramírez-Rios, Janet B. García-Martínez and Andrés F. Barajas-Solano

Sci 2025, 7(1), 31; https://doi.org/10.3390/sci7010031 - 6 Mar 2025

Viewed by 506

Abstract

This study evaluated the efficiency of catalytic ozonation with magnetite (Fe₃O₄) in degrading recalcitrant organic compounds in leachates from two sanitary landfills in Colombia. The optimum treatment conditions were also analyzed by means of a response surface design, resulting [...] Read more.

This study evaluated the efficiency of catalytic ozonation with magnetite (Fe₃O₄) in degrading recalcitrant organic compounds in leachates from two sanitary landfills in Colombia. The optimum treatment conditions were also analyzed by means of a response surface design, resulting in 6 g O₃/h, 2.5 g/L Fe₃O₄, and pH 9, which resulted in COD removal rates of 85.3% in El Guayabal and 75.8% in La Madera. Moreover, the BOD₅/COD ratio increased from 0.26 to 0.38 and from 0.23 to 0.32, respectively, suggesting increased effluent biodegradability. The most efficient ozone consumption (2.7 g O₃ per gram of COD removed) was obtained under alkaline conditions with a high catalyst concentration. Magnetite demonstrated structural stability, although its catalytic efficiency progressively decreased after three cycles of use, with COD removal decreasing from 85.3% to 73.6%. These findings validate catalytic ozonation with magnetite as an efficient alternative for advanced leachate treatment, with the potential to optimize contaminant removal in industrial effluents and strengthen environmental remediation strategies. Full article

(This article belongs to the Topic Advanced Oxidation Processes: Applications and Prospects, 2nd Volume)

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15 pages, 1969 KiB  

Open AccessArticle

The Effect of Optimizing the Stripping and Drying Parameters During Industrial Extraction on the Physicochemical Properties of Soybean Oil

by Toktam Mohammadi-Moghaddam, Hamid Bakhshabadi, Abolfazl Bojmehrani, Marcos Eduardo Valdes and Afsaneh Morshedi

Processes 2025, 13(2), 541; https://doi.org/10.3390/pr13020541 - 14 Feb 2025

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Abstract

Soybean oil is the second most consumed vegetable oil worldwide and is recognized as a source of heart-healthy polyunsaturated fatty acids. Optimizing the extraction process in the oil industry is essential for both economic and environmental sustainability. This research aimed to determine the [...] Read more.

Soybean oil is the second most consumed vegetable oil worldwide and is recognized as a source of heart-healthy polyunsaturated fatty acids. Optimizing the extraction process in the oil industry is essential for both economic and environmental sustainability. This research aimed to determine the optimal conditions for various extraction parameters—stripper temperature (110–140 °C), stripper pressure (150–210 mbar), and dryer pressure (60–120 mbar)—and their effects on the physicochemical properties of soybean oil. These properties include oil-insoluble fine substances, acidity, the color index, peroxide value, oxidative stability, and moisture content. The results indicated that the stripper temperature significantly influenced oil-insoluble fine substances, acidity, the color index, and peroxide value (p < 0.05). The optimal conditions for oil extraction were found to be a stripper temperature of 110 °C, a stripper pressure of 150 mbar, and a dryer pressure of 120 mbar. Under these conditions, the oil-insoluble fine substances, acidity, the color index, peroxide value, oxidative stability, and moisture content of soybean oil were in the ranges of 0.2–0.58%, 0.63–1.15%, 4.3–5.5, 0.67–1.23 meqO₂/kg, 3–5.5, and 0.05–0.11%, respectively. These findings provide valuable insight for optimizing soybean oil extraction processes to enhance quality and efficiency. Future advancements in industrial oil extraction are expected to focus on integrating efficient, eco-friendly technologies and enhancing precision through automation and data analytics to optimize yield and minimize waste. Full article

(This article belongs to the Topic Advanced Oxidation Processes: Applications and Prospects, 2nd Volume)

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19 pages, 5177 KiB  

Open AccessArticle

UV/Advanced Oxidation Process for Removing Humic Acid from Natural Water: Comparison of Different Methods and Effect of External Factors

by Qingchao Shen, Xiaosan Song, Jishuo Fan, Cheng Chen and Zhuohao Li

Water 2024, 16(13), 1815; https://doi.org/10.3390/w16131815 - 26 Jun 2024

Cited by 1 | Viewed by 1786

Abstract

Humic acid (HA) is an organic compound naturally present in aquatic environments. It has been found to have detrimental effects on water color, the transport of heavy metals, and the elimination of disinfection by-products (DBPs), thereby exerting an impact on human health. This [...] Read more.

Humic acid (HA) is an organic compound naturally present in aquatic environments. It has been found to have detrimental effects on water color, the transport of heavy metals, and the elimination of disinfection by-products (DBPs), thereby exerting an impact on human health. This study introduced four synergistic ultraviolet/advanced oxidation processes (UV/AOPs) systems aimed at eliminating HA from water. The research explored the effect of solution pH, duration of illumination, initial reactant concentration, and oxidant concentration on the degradation of HA. The results indicated that the mineralization rate achieved by individual UV or oxidant systems was less than 15%, which is significantly lower compared to UV/AOPs systems. Among these methods, the UV/peroxymonosulfate (UV/PMS) process demonstrated the highest effectiveness, achieving a mineralization rate of 94.15%. UV/peroxydisulfate (UV/PDS) and UV/sodium percarbonate (SPC) were subsequently implemented, with UV/sulfite (S(IV)) demonstrating the lowest effectiveness at 19.8%. Optimal degradation efficiency was achieved when the initial concentration of HA was 10 mg/L, the concentration of PMS was 3 mmol/L, and the initial pH was set at 5, with an illumination time of 180 min. This experimental setup resulted in high degradation efficiencies for chemical oxygen demand (COD), UV₂₅₄, and HA, reaching 96.32%, 97.34%, and 92.09%, respectively. The energy efficiency of this process (EE/O) was measured at 0.0149 (kWh)/m³, indicating the capability of the UV/PMS system to efficiently degrade and mineralize HA in water. This offers theoretical guidance for the engineered implementation of a UV/PAM process in the treatment of HA. Full article

(This article belongs to the Topic Advanced Oxidation Processes: Applications and Prospects, 2nd Volume)

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17 pages, 2771 KiB  

Open AccessArticle

Evaluation of the Efficiency of Using an Oxidizer in the Leaching Process of Gold-Containing Concentrate

by Bagdaulet Kenzhaliyevich Kenzhaliyev, Nessipbay Kyandykovich Tussupbayev, Gulnar Zhanuzakovna Abdykirova, Aigul Kairgeldyevna Koizhanova, Dametken Yedilovna Fischer, Zhazira Amangeldiyevna Baltabekova and Nazira Orakkyzy Samenova

Processes 2024, 12(5), 973; https://doi.org/10.3390/pr12050973 - 10 May 2024

Cited by 3 | Viewed by 1513

Abstract

This article presents the results of cyanide leaching of gold-containing concentrate using the trichlorocyanuric acid (TCCA) oxidizer. Gold-containing concentrate was obtained from a gold tailings sample from a gold recovery factory (GRF) in one of the deposits of Kazakhstan that have not previously [...] Read more.

This article presents the results of cyanide leaching of gold-containing concentrate using the trichlorocyanuric acid (TCCA) oxidizer. Gold-containing concentrate was obtained from a gold tailings sample from a gold recovery factory (GRF) in one of the deposits of Kazakhstan that have not previously been studied for concentrability. According to X-ray phase analysis and energy dispersive spectrometry (DSM) data, the main compounds in the tailings sample under study are pyrite FeS₂, quartz SiO₂, calcite CaCO₃, albite NaAlSi₃O₈, muscovite KAl₂Si₃AlO₁₀(OH)₈, dolomite CaMg(CO₃)₂, and oxidized iron compounds. Microscopic studies of the concentrate have established the presence of ultrafine gold with sizes from Au 0.9 to 10.2 μm in pyrite. Obtaining the gold-containing concentrate with a gold content of 15.95 g/t is possible according to the enrichment scheme, which includes centrifugal separation, classification according to the fineness class −0.05 mm, additional grinding of hydrocyclone sands to a fineness of 90.0–95.0% of the class finer than 0.050 mm, and control centrifugal separation. Since pyrite in technogenic raw materials is the main gold-containing mineral, this paper presents studies on the oxidizability of pyrite with the TCCA oxidizer. The results of studies on the oxidation of pyrite using the TCCA oxidizer show the products of its hydrolysis oxidize pyrite with the formation of various iron compounds on its surface. Pretreatment of gold-containing concentrate with oxidizer TCCA for 3 h before the cyanidation process (20 h) allows for an increase in the recovery of gold in the solution by 5.8%. Full article

(This article belongs to the Topic Advanced Oxidation Processes: Applications and Prospects, 2nd Volume)

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15 pages, 3505 KiB  

Open AccessFeature PaperArticle

Enhanced UV/H₂O₂ System for the Oxidation of Organic Contaminants and Ammonia Transformation from Tannery Effluents

by Néstor A. Urbina-Suarez, German L. López-Barrera, Janet B. García-Martínez, Andrés F. Barajas-Solano, Fiderman Machuca-Martínez and Antonio Zuorro

Processes 2023, 11(11), 3091; https://doi.org/10.3390/pr11113091 - 27 Oct 2023

Cited by 6 | Viewed by 2183

Abstract

In this work, a UV/H₂O₂ system in real tannery wastewater was evaluated by an experimental design with optimal stage 2-level I-optimal reaction surface using Design Expert software to analyze the effects of temperature, pH, UV lamp power (W), and H [...] Read more.

In this work, a UV/H₂O₂ system in real tannery wastewater was evaluated by an experimental design with optimal stage 2-level I-optimal reaction surface using Design Expert software to analyze the effects of temperature, pH, UV lamp power (W), and H₂O₂ concentration on COD removal and nitrification. It was found that pH and temperature were the variables that affected the process the most. It was found that an acidic pH of 4.5–5.5 and temperatures between 50 and 70 °C favored improved COD and ammonium oxidation. The process conditions—temperature 54.6 °C, pH 4, pW-UV 60 W and hydrogen peroxide 0.5—were confirmed in the next phase of the study using a one-way statistical analysis ANOVA. Under these conditions, the nitrite removal rate was 98.4%, ammonium 94.53%, chromium 92.3%, chlorides 62.4%, BOD 67.4%, COD 44.5%, and color 48%. Full article

(This article belongs to the Topic Advanced Oxidation Processes: Applications and Prospects, 2nd Volume)

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14 pages, 1092 KiB  

Open AccessArticle

Emerging Contaminants Decontamination of WWTP Effluents by BDD Anodic Oxidation: A Way towards Its Regeneration

by Joaquin R. Dominguez, Teresa González, Sergio E. Correia and Maria M. Núñez

Water 2023, 15(9), 1668; https://doi.org/10.3390/w15091668 - 25 Apr 2023

Cited by 4 | Viewed by 2106

Abstract

Electrochemical oxidation using a boron-doped diamond anode (EO-BDD) was tested to remove emerging contaminants commonly present in wastewater treatment plant effluents (WWTPe). The main objective of the work was the regeneration of this water for its possible reuse in high-quality demanding uses. In [...] Read more.

Electrochemical oxidation using a boron-doped diamond anode (EO-BDD) was tested to remove emerging contaminants commonly present in wastewater treatment plant effluents (WWTPe). The main objective of the work was the regeneration of this water for its possible reuse in high-quality demanding uses. In the first part of the work, we investigated the potential of this technique for removing a group of neonicotinoid pesticides (thiamethoxam (TMX), imidacloprid (ICP), acetamiprid (ACP), and thiacloprid (TCP)) in a WWTP effluent. The influence of operating variables, such as current density, the conductivity of media, supporting electrolyte type (Na₂SO₄, NaCl or NaNO₃), or the natural aqueous matrix on target variables were fully established. Selected target variables were: (1) the percentage of pollutant removal, (2) the kinetics (apparent pseudo-first-order kinetic rate constant), (3) total organic carbon (TOC) removal, and (4) the specific energy consumption (SEC). A response surface methodology (RSM) was applied to model the results for all cases. In the paper’s final part, this technology was tested with a more broad group of common emerging pollutants, including some azole pesticides (such as fluconazole (FLZ), imazalil (IMZ), tebuconazole (TBZ), or penconazole (PNZ)), antibiotics (amoxicillin (AMX), trimethoprim (TMP), and sulfamethoxazole (SMX)), and an antidepressant (desvenlafaxine (DVF)). The results confirm the power of this technology to remove this emerging contamination in WWTP effluents which supposes an interesting way towards its regeneration. Full article

(This article belongs to the Topic Advanced Oxidation Processes: Applications and Prospects, 2nd Volume)

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