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Themed collection Ultraviolet-based Advanced Oxidation Processes (UV AOPs)

18 items
Cover

Front cover

Graphical abstract: Front cover
Front/Back Matter

Contents list

Editorial

The rapidly growing role of UV-AOPs in the production of safe drinking water

Guest editors Stuart Khan, Graham Gagnon, Michael Templeton and Dionysios (Dion) Dionysiou introduce the Ultraviolet-based advanced oxidation processes (UV-AOPs) themed issue of Environmental Science: Water Research & Technology.

Graphical abstract: The rapidly growing role of UV-AOPs in the production of safe drinking water
Communication

Cyto- and geno-toxicity of 1,4-dioxane and its transformation products during ultraviolet-driven advanced oxidation processes

Ultraviolet-driven advanced oxidation processes (UV/AOPs) are integral steps in water reuse treatment trains.

Graphical abstract: Cyto- and geno-toxicity of 1,4-dioxane and its transformation products during ultraviolet-driven advanced oxidation processes
Paper

Solar photocatalysis with modified TiO2 photocatalysts: effects on NOM and disinfection byproduct formation potential

The overall reactivity of natural organic matter from river water towards chlorine was increased by solar TiO2 treatment with TiO2 nanomaterials modified with nitrogen, boron, or silver to improve their solar light utilization.

Graphical abstract: Solar photocatalysis with modified TiO2 photocatalysts: effects on NOM and disinfection byproduct formation potential
Open Access Paper

Comparison of advanced oxidation processes in the decomposition of diuron and monuron – efficiency, intermediates, electrical energy per order and the effect of various matrices

The efficiency of UV-photolysis, ozonation, their combination and heterogeneous photocatalysis was investigated and compared in various matrices.

Graphical abstract: Comparison of advanced oxidation processes in the decomposition of diuron and monuron – efficiency, intermediates, electrical energy per order and the effect of various matrices
From the themed collection: Recent Open Access Articles
Paper

Efficient degradation of cytotoxic contaminants of emerging concern by UV/H2O2

The degradation kinetics and cytotoxicity of two commonly detected contaminants of emerging concern (CECs), diclofenac and triclosan, in UV/H2O2 system were investigated in this study.

Graphical abstract: Efficient degradation of cytotoxic contaminants of emerging concern by UV/H2O2
Paper

Biofouling control by UV/H2O2 pretreatment for brackish water reverse osmosis process

UV applied with H2O2 is a well-known advanced oxidation process (AOP) for degradation of trace organic compounds. In this study, the UV/H2O2 process was applied as a pre-treatment step to control reverse osmosis biofouling.

Graphical abstract: Biofouling control by UV/H2O2 pretreatment for brackish water reverse osmosis process
Paper

Improving UV/H2O2 performance following tertiary treatment of municipal wastewater

The ability of UV/AOP to treat trace organic contaminants (TOrCs) in wastewater is inhibited by (1) UV light-absorbing species and (2) hydroxyl radical (˙OH) scavenging species.

Graphical abstract: Improving UV/H2O2 performance following tertiary treatment of municipal wastewater
Paper

Emerging investigators series: ultraviolet and free chlorine aqueous-phase advanced oxidation process: kinetic simulations and experimental validation

An elementary reaction based kinetic model was developed for the fate of acetone degradation in UV/free chlorine advanced oxidation process.

Graphical abstract: Emerging investigators series: ultraviolet and free chlorine aqueous-phase advanced oxidation process: kinetic simulations and experimental validation
From the themed collection: Emerging Investigator Series
Paper

Temperature dependence of the absorbance of 185 nm photons by water and commonly occurring solutes and its influence on the VUV advanced oxidation process

185 nm absorption properties of water and common solutes within temperatures relevant to water treatment.

Graphical abstract: Temperature dependence of the absorbance of 185 nm photons by water and commonly occurring solutes and its influence on the VUV advanced oxidation process
Paper

Photo-oxidation of 11-nor-9-carboxy-Δ9-tetrahydrocannabinol using medium-pressure UV and UV/H2O2 – a kinetic study

Direct UV photolysis is the primary contributor to the degradation of THC-COOH in an aqueous solution.

Graphical abstract: Photo-oxidation of 11-nor-9-carboxy-Δ9-tetrahydrocannabinol using medium-pressure UV and UV/H2O2 – a kinetic study
Paper

Reaction rates and product formation during advanced oxidation of ionic liquid cations by UV/peroxide, UV/persulfate, and UV/chlorine

Ionic liquid cations can be removed from contaminated source water by various UV-based advanced oxidation processes due to efficient reactions with hydroxyl and sulfate radicals.

Graphical abstract: Reaction rates and product formation during advanced oxidation of ionic liquid cations by UV/peroxide, UV/persulfate, and UV/chlorine
Paper

Elimination of transforming activity and gene degradation during UV and UV/H2O2 treatment of plasmid-encoded antibiotic resistance genes

This study determined deactivation of transforming activity of an ARG and the ARG degradation during UV and UV/H2O2 treatment of plasmid pUC19 containing an ampicillin resistance gene.

Graphical abstract: Elimination of transforming activity and gene degradation during UV and UV/H2O2 treatment of plasmid-encoded antibiotic resistance genes
Paper

The fate of dichloroacetonitrile in UV/Cl2 and UV/H2O2 processes: implications on potable water reuse

The findings have important implications for the control of preformed DBPs by subsequent UV-AOPs for potable water reuse.

Graphical abstract: The fate of dichloroacetonitrile in UV/Cl2 and UV/H2O2 processes: implications on potable water reuse
Paper

Emerging investigators series: comparative study of naproxen degradation by the UV/chlorine and the UV/H2O2 advanced oxidation processes

The UV/chlorine and UV/H2O2 AOPs on the degradation of naproxen were compared. The efficiency of naproxen was much higher by UV/chlorine compared to UV/H2O2 under all the tested conditions. ClO˙ and CO3˙ played important roles in the degradation of naproxen.

Graphical abstract: Emerging investigators series: comparative study of naproxen degradation by the UV/chlorine and the UV/H2O2 advanced oxidation processes
From the themed collection: Emerging Investigator Series
Paper

Degradation of 1H-benzotriazole by UV/H2O2 and UV/TiO2: kinetics, mechanisms, products and toxicology

Benzotriazoles are emerging contaminants widespread in environmental waters.

Graphical abstract: Degradation of 1H-benzotriazole by UV/H2O2 and UV/TiO2: kinetics, mechanisms, products and toxicology
Paper

Potential formation of mutagenicity by low pressure-UV/H2O2 during the treatment of nitrate-rich source waters

LP-UV/H2O2 treatment of NOM-containing synthetic waters led to nitrite, nitrophenol and measurable but not mutagenic Ames responses in the presence of nitrate, where the NOM type affected the response levels.

Graphical abstract: Potential formation of mutagenicity by low pressure-UV/H2O2 during the treatment of nitrate-rich source waters
18 items

About this collection

Edited by ESWRT Associate Editors Graham Gagnon (Dalhousie University, Canada), Stuart Khan (University of New South Wales, Australia) and Mike Templeton (Imperial College London, UK) and Advisory Board member Dion Dionysiou (University of Cincinnati, USA) this collection showcases some of the latest research on the theme of Ultraviolet-based Advanced Oxidation Processes (UV AOPs). This includes by-products, kinetics, and toxicity of UV AOP treatment; LED and alternative UV sources; alternative UV AOP oxidants; the impact of pre-treatment steps on UV AOP performance; fluence measurement and performance monitoring; life cycle assessments and more.

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