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Showing 1 to 20 of 28 for “"Advanced Oxidation Processes"”.
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Efficacy of Catalytic Ozonation Advanced Oxidation Processes Compared to Traditional Ozone-Based Advanced Oxidation Processes for Degradation of Recalcitrant Compounds
… as pharmaceuticals and personal care products. Advanced oxidation processes (AOPs) have been developed to degrade ECs that are not effectively removed by conventional wastewater treatment. The goal of implementing AOPs is to promote the formation of hydroxyl radicals (•OH), which are stronger …
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Removal of organic compounds from aquatic environments by advanced oxidation processes.
… aims to apply photolysis and photocatalysis (advanced oxidation processes) as novel technologies for in-situ removal of harmful contaminants. Photoinduced photolysis by UV-A 365 nm LED irradiation was explored during bench-scale experiments for the removal of Microcystis aeruginosa cells and …
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Remediation of endocrine disruptor in contaminated water through advanced oxidation processes
El problema originado por la escasez de agua en determinadas zonas del planeta se agudiza en gran manera por la contaminación de la misma debido al vertido indiscriminado de residuos generados por la actividad del hombre, lo que supone una amenaza para el medio acuático y en consecuencia para la …
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Evaluation of veterinary antibiotics in a swine slaughterhouse wastewaters and their removal using advanced oxidation processes
Submitted in fulfillment of the academic requirements for the degree of Doctor of Engineering, Durban University of Technology, Durban, South Africa, 2020.
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Comparison of Two Advanced Oxidation Processes for Their Production of Hydroxyl Radicals and Evaluation of a UV/Ozone AOP at Varying UV Fluence for Treating Diclofenac
<p>This study explores the efficacy of two advanced oxidation processes for generation of hydroxyl radicals to promote degradation of emerging contaminants. Drought and water shortage have become pressing issues caused by our world’s changing climate. Water reclamation and reuse are increasingly …
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Understanding the impact of the scavenging capacity on costs of the UV chlorine advanced oxidation process for drinking water treatment using the external calibration method and the development of cost curves.
UV-driven advanced oxidation processes (e.g. UV/H2O2, UV/Cl) that couple UV irradiation with oxidizing chemicals to generate highly reactive species such as ·OH radicals and reactive chlorine species are increasingly being recommended for the removal of recalcitrant organic contaminants in drinking …
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Development of a Novel TiO2-polymeric Photocatalyst for Water Purification both under UV and Solar illuminations
… non removable by traditional water purification processes, made advanced oxidation processes come into existence. Among all kind of advanced oxidation processes, photocatalytic oxidation is the most promising one. The photocatalytic process is based on aqueous phase hydroxyl radical chemistry and …
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Applications of microwave technology to wastewater treatment
A microwave enhanced advanced oxidation process using hydrogen peroxide (MW/H₂O₂-AOP) was used for the release of nutrients and the destruction of solids from secondary municipal sewage sludge. The significant factors affecting the MW/H₂O₂-AOP that would yield maximum soluble substrates were …
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REMOVAL OF EMERGING CONTAMINANTS FROM AQUEOUS SOLUTION BY OZONE -BASED PROCESSES
… This study assess the potential of ozone based advanced oxidation processes (AOP) to oxidize number of emerging contaminants. Different combinations of ozone with hydrogen peroxide and sodium persulfate were tested. For this study 1-4, dioxane, perfluorinated compounds (PFCs), …
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Removal of Total Organic Carbon and Emerging Contaminants in an Advanced Water Treatment process using Ozone-BAC-GAC
… to demonstrate the feasibility of a carbon-based advanced treatment train; including ozonation, biological activated carbon (BAC) filtration and granular activated carbon (GAC) adsorption to achieve water quality suitable for potable reuse and assess the impact of a range of operating conditions …
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Mechanistic insights on the merits and limitations of advanced treatment processes for removal of contaminants of emerging concern
… years, there has been growing interest to use Advanced Oxidation Processes (AOPs) to degrade PFAS. However, progress in the field has been hampered by the ambiguity that exists regarding the role of two key reactive oxygen species (ROS) i.e. hydroxyl radical (•OH) and superoxide radical anion …
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A Computational Approach to Efficient Electrode Material Design for Electrochemical Oxidation of PFAS
… treatment technologies, electrochemical advanced oxidation processes (EAOP) have shown great promise for PFAS remediation in water. However, the reaction mechanisms are inadequately understood, which hinders the development of design principles for efficient electrode materials. This …
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Degradation of Emerging Contaminants by Advanced Oxidation Using Multi-Walled Carbon Nanotubes and Continuous Ozone Injection
… made in both water conservation and treatment. Advanced oxidation processes (AOPs) have been developed to go above and beyond the capabilities of traditional wastewater treatment facilities to eliminate emerging contaminants from our water systems. AOPs increase the generation of hydroxyl …
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Decomposition of hydrogen peroxide and organic compounds in the presence of iron and iron oxides
Most advanced oxidation processes use the hydroxyl radical (OH) to treat pollutants found in wastewater and contaminated aquifers because OH reacts with numerous compounds at near diffusion-limited rates. OH can be made by reacting hydrogen peroxide (H202) with either Fe(II) (the Fenton reaction), …
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Preparation, Characterization, and Evaluation of Photocatalytic Properties of a Novel NaNbO3/Bi2WO6 Heterostructure Photocatalyst for Water Treatment
… heterogeneous photocatalysis, as one of the advanced oxidation processes that makes use of semiconductors and inexhaustible solar light, has recently been extensively studied and applied to water decontamination. However, due to low light absorption efficiencies and severe electron-hole …
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Prediction of the Degradation of Emerging Contaminants During Oxidative Treatment via Analysis of Reaction Rate Constants
… to unregulated emerging organic contaminants. Advanced oxidation processes (AOPs), which produce hydroxyl radicles (•OH), have been developed and implemented to remove recalcitrant emerging contaminants left by conventional treatment processes. The current understanding of the removal efficacy …
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Combining chemical with biological oxidation for efficient treatment of chloronitrobenzene in groundwater
… demand immediate remedial approaches, such as advanced oxidation processes (AOPs). While AOPs are effective for the removal of many organic contaminants from water, these techniques are often costly, especially when complete mineralization is the goal. In this study, it was hypothesized that …
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Occurrence and Control of Microbial Contaminants of Emerging Concern through the Urban Water Cycle: Molecular Profiling of Opportunistic Pathogens and Antibiotic Resistance
… ineffective at removing ARGs, but plants using advanced oxidation processes or ozonation paired with biofiltration to produce direct potable reuse water were highly effective at removing ARGs. Non-potable reclaimed water consistently had greater quantities of sul1, a sulfonamide ARG, and …
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Plasma-water interface reactions caused by positive corona and glow discharges
… has drawn extensive attention in the field of advanced oxidation processes, due to its advantages of producing various reactive species such as O, OH, HO2, H2O2 and O3 in water. Plasma-water interface reactions are one of the core challenges in this field since it involves multiple physical and …
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