Photovoltaic powered ultraviolet and visible light-emitting diodes for sustainable point-of-use disinfection of drinking waters

Lui, Gough Yumu, Roser, David, Corkish, Richard, Ashbolt, Nicholas, Jagals, Paul and Stuetz, Richard (2014) Photovoltaic powered ultraviolet and visible light-emitting diodes for sustainable point-of-use disinfection of drinking waters. Science of the Total Environment, 493 185-196. doi:10.1016/j.scitotenv.2014.05.104


Author Lui, Gough Yumu
Roser, David
Corkish, Richard
Ashbolt, Nicholas
Jagals, Paul
Stuetz, Richard
Title Photovoltaic powered ultraviolet and visible light-emitting diodes for sustainable point-of-use disinfection of drinking waters
Journal name Science of the Total Environment   Check publisher's open access policy
ISSN 0048-9697
1879-1026
Publication date 2014-09-15
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1016/j.scitotenv.2014.05.104
Open Access Status
Volume 493
Start page 185
End page 196
Total pages 12
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2015
Subject 2304 Environmental Chemistry
2310 Pollution
2311 Waste Management and Disposal
2305 Environmental Engineering
Abstract For many decades, populations in rural and remote developing regions will be unable to access centralised piped potable water supplies, and indeed, decentralised options may be more sustainable. Accordingly, improved household point-of-use (POU) disinfection technologies are urgently needed. Compared to alternatives, ultraviolet (UV) light disinfection is very attractive because of its efficacy against all pathogen groups and minimal operational consumables. Though mercury arc lamp technology is very efficient, it requires frequent lamp replacement, involves a toxic heavy metal, and their quartz envelopes and sleeves are expensive, fragile and require regular cleaning. An emerging alternative is semiconductor-based units where UV light emitting diodes (UV-LEDs) are powered by photovoltaics (PV). Our review charts the development of these two technologies, their current status, and challenges to their integration and POU application. It explores the themes of UV-C-LEDs, non-UV-C LED technology (e.g. UV-A, visible light, Advanced Oxidation), PV power supplies, PV/LED integration and POU suitability. While UV-C LED technology should mature in the next 10. years, research is also needed to address other unresolved barriers to in situ application as well as emerging research opportunities especially UV-A, photocatalyst/photosensitiser use and pulsed emission options.
Keyword Disinfection
Light-emitting diodes
Pathogen
Photovoltaics
Ultraviolet
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: Official 2015 Collection
School of Public Health Publications
 
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