Evidence map›Paper›PMID 41262149›Full record

ArticleACS ES&T water2025

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, Rae E Fitzgerald, Amina K Stoddart, Graham A Gagnon

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in ACS ES&T water, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Jessica L BennettCentre for Water Resources Studies, Faculty of Engineering, Dalhousie University, 1360 Barrington Street, Halifax, NS B3H 4R2, Canada.ORCID https://orcid.org/0000-0002-9881-2482
Sean A MacIsaacCentre for Water Resources Studies, Faculty of Engineering, Dalhousie University, 1360 Barrington Street, Halifax, NS B3H 4R2, Canada.ORCID https://orcid.org/0000-0003-3893-2156
Jin LiCentre for Water Resources Studies, Faculty of Engineering, Dalhousie University, 1360 Barrington Street, Halifax, NS B3H 4R2, Canada.
Metyn B RehmanCentre for Water Resources Studies, Faculty of Engineering, Dalhousie University, 1360 Barrington Street, Halifax, NS B3H 4R2, Canada.
Rae E FitzgeraldCentre for Water Resources Studies, Faculty of Engineering, Dalhousie University, 1360 Barrington Street, Halifax, NS B3H 4R2, Canada.
Amina K StoddartCentre for Water Resources Studies, Faculty of Engineering, Dalhousie University, 1360 Barrington Street, Halifax, NS B3H 4R2, Canada.ORCID https://orcid.org/0000-0001-8092-0226
Graham A GagnonCentre for Water Resources Studies, Faculty of Engineering, Dalhousie University, 1360 Barrington Street, Halifax, NS B3H 4R2, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

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 LEDs a reality and now poise these traditionally disinfection systems to serve a dual purpose for targeted remediation of trace organic contaminants (TrOCs). This work investigated the effectiveness of UV C light emission tailoring on the photodegradation dynamics of select TrOCs. Degradation kinetics and quantum yields of target compounds under 275 nm irradiation were governed by molar absorbance and chemical structure, and kinetics followed estrone (E1) > tryptophan > caffeine ≈ pCBA > urea. Secondary experiments compared the efficacy of a 275 nm UV LED and a medium-pressure mercury vapor (MP UV) system for photodegradation of two steroid estrogens, E1 and 17β-estradiol (17β-E2). Use of the 275 nm UV LED system substantially reduced fluence requirements and, in the case of 17β-E2, energy requirements, to achieve 90% degradation of the target compounds. Liquid chromatography-tandem mass spectrometry analysis of an E1 photodegradation product showed that the UV C LED system was more effective in eliminating both E1 and its associated photoproduct as compared to the MP UV system. This work demonstrates the effective use of UV LEDs for tailored photolysis of TrOCs and provides evidence for their use potential in applications outside of water disinfection.

Indexed as

photolysistrace organic contaminantsultravioletUV CUV LEDswater treatment

Identifiers

PMID41262149
PMCPMC12624741

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.