Graham A. Gagnon

Treatment Pluralism in Full-Scale UV LED Wastewater Disinfection Showcasing Flexible Flow and Energy Control with Predictable Performance

Bailey Reid, Sean A. MacIsaac, S Organ, C. Carolina Ontiveros et autres

Wastewater treatment facilities (WWTFs) are currently facing multitudes of challenges including incline in population, climate change driven challenges and stringent regulation limits. Ultraviolet light emitting diodes (UV LEDs) are becoming an attractive disinfection system that has demonstrated powerful inactivation capabilities with modular …

ca (code pays fourni par la source)

Retraction notice to “Refractory plasmonic material based floating solar still for simultaneous desalination and electricity generation” [iScience 27 (2024) 111225]

Matthew J. Margeson, Mark Atwood, Jaser Lara de Larrea, Joseph A. Weatherby et autres

[This retracts the article DOI: 10.1016/j.isci.2024.111225.].

ca (code pays fourni par la source)

Reduction of Biochemical Oxygen Demand in Wastewater Effluents Using UV LED Photolysis and Advanced Oxidation Processes

Sean A. MacIsaac, Carolina Ontiveros, Jessica L. Bennett, Bailey Reid et autres

Removal of organic loading in wastewater effluent is a priority for treatment facilities to ensure discharge water adheres to local regulations and is safe for the environment. This study investigated the removal of bulk organic matter (as measured by biochemical and carbonaceous …

ca (code pays fourni par la source)

Reduction of Biochemical Oxygen Demand in Wastewater Effluents Using UV LED Photolysis and Advanced Oxidation Processes

Sean A. MacIsaac, Carolina Ontiveros, Jessica L. Bennett, Bailey Reid et autres

Removal of organic loading in wastewater effluent is a priority for treatment facilities to ensure discharge water adheres to local regulations and is safe for the environment. This study investigated the removal of bulk organic matter (as measured by biochemical and carbonaceous …

ca (code pays fourni par la source)

A New In-Line GAC-Based Device for Concentrating Viruses in Treated Wastewater: Implications for Full-Scale UV C LED Treatment

Emalie K. Hayes, Madison Gouthro, Sean A. MacIsaac, Jessica L. Bennett et autres

High Resolution Image Download MS PowerPoint Slide UV C LEDs are an emerging technology offering wavelength-specific control for microbial inactivation in water and wastewater treatment. As these systems advance, complementary monitoring methods are needed to accurately evaluate the treatment performance and viral …

ca (code pays fourni par la source)

A Protocol for Decontaminating Laboratory Materials Used in Ultra-Trace Per- And Polyfluoroalkyl Substances (PFAS) Analysis

Alvine Manda-Tchonlla, Jessica L. Bennett, Graham A. Gagnon

qPCR-based prediction of low-level microcystin-LR using mcyE and passive sampling across multiple lakes and years

David Redden, Clarke A.M. Brown, Morgan Harasymchuk, Saksham Bafna et autres

Microcystin-LR (MC-LR) is a cyanobacterial hepatotoxin that poses health risks even at low concentrations. Because quantitative analysis of MC-LR is costly and time-consuming, water managers rely on early warning tools to determine when confirmatory testing is warranted. Quantitative PCR (qPCR) targeting the …

ca (code pays fourni par la source)

Nitrate-Mediated Photooxidation of Steroid Estrogens: Efficacy and Prospects for Wastewater Treatment

Jessica L. Bennett, Sean A. MacIsaac, Manda Tchonlla, Crystal L. Sweeney et autres

High Resolution Image Download MS PowerPoint Slide UV light-based advanced oxidation processes have shown considerable promise for mitigation of trace organic contaminants (TrOCs). Recent work has garnered interest in ambient NO 3 – as a photooxidant within UV treatment processes. This work …

ca, us (code pays fourni par la source)

Photolysis at the Speed of Light: Chemical-Free Degradation of Trace Organic Contaminants by Bespoke Photolysis Using High-Intensity Ultraviolet C Light-Emitting Diodes

Jessica L. Bennett, Sean A. MacIsaac, Jin Li, Metyn B. Rehman et autres

Ultraviolet C light-emitting diodes (UV C LEDs) have demonstrated effectiveness in disinfection applications and proven suitability at scale for disinfection of municipal wastewater and drinking water. Technological advances in materials design and electrical efficiency have made high-intensity light delivery by UV C …

ca (code pays fourni par la source)

Comparison of Real Versus Synthetic NOM on Lead and Copper Release Using Dump and Fill Studies

Patrick W. King, Benjamin F. Trueman, Sigrid Peldszus, Anushka Mishrra et autres

ABSTRACT The main objective of this study was to evaluate and compare the impact of real and synthetic NOM on lead and copper release from galvanic corrosion. A 21‐week “dump and fill” experiment was completed using test pieces with new lead and …

ca, us (code pays fourni par la source)

Impact of material properties for improved Pseudomonas aeruginosa biofilm inactivation with 280 nm UV LEDs

Toni J. Mullin, Sean A. MacIsaac, Amina K. Stoddart, Graham A. Gagnon

Biofilm microbial communities encased in extracellular polymeric substances are a concern in drinking water premise plumbing and fixtures, and are challenging to remove and disinfect. Pseudomonas aeruginosa (P. aeruginosa), a commonly used surrogate organism, is employed in this study due to its …

ca (code pays fourni par la source)

Detection of avian influenza virus in surface waters using passive samplers

Madison Gouthro, Emalie K. Hayes, Taylor Prest, Graham A. Gagnon

Avian influenza (AIV) remains a global concern not only for humans as a pandemic threat but pose a risk to poultry, wildlife, and livestock. The detection of AIV in the environment traditionally has relied on reactive surveillance, limiting proactive response. This study …

ca (code pays fourni par la source)