Energy efficient operation of photocatalytic reactors based on UV LEDs for pollution remediation in water

R Prabhu, F Hewitt, G Georgieva, Linda A Lawton, H N Meenakshi, P K J Robertson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)
170 Downloads (Pure)

Abstract

Photocatalytic technology using TiO2 is one of the emerging approaches for water treatment, especially as a final step to remove complex organics such as pesticides, hormones or humic acids. Titanium dioxide (TiO2) is a semiconductor material with strong UV absorption band and exhibits strong photocatalytic activity. The photocatalytic activity of TiO2 powders have been extensively studied, using UV light sources. However, the incident photons that initiate the process of photocatalytic oxidation using titanium dioxide are not efficiently used, this is responsible for the low photonic efficiency that characterise oxidation of aqueous pollutants hence its limitation in industrial applications. Periodic illumination has been investigated as a means of increasing the photonic efficiency in a photoreactor with acid orange as a model pollutant. Results indicate more than four-fold increase in photonic efficiency through periodic illumination compared to continuous illumination. This approach can improve the energy efficiency of the photocatalytic water treatment systems.
Original languageEnglish
Title of host publicationOCEANS 2017 - Aberdeen: Proceedings
Publisher IEEE
Number of pages5
ISBN (Electronic)978-1-5090-5278-3
ISBN (Print)978-1-5090-5279-0
Publication statusPublished - 26 Oct 2017
EventOceans'17 MTS/IEEE : Aberdeen, 19 –22 June 2017 - Aberdeen, United Kingdom
Duration: 19 Jun 201722 Jun 2017

Conference

ConferenceOceans'17 MTS/IEEE
CountryUnited Kingdom
CityAberdeen
Period19/06/201722/06/2017

Fingerprint

Photonics
Light emitting diodes
Lighting
Water treatment
Water
Humic Substances
Oxidation
Pesticides
Ultraviolet radiation
Industrial applications
Energy efficiency
Light sources
Absorption spectra
Photons
Hormones
Semiconductor materials
Acids
Environmental Restoration and Remediation
titanium dioxide

Cite this

Prabhu, R., Hewitt, F., Georgieva, G., Lawton, L. A., Meenakshi, H. N., & Robertson, P. K. J. (2017). Energy efficient operation of photocatalytic reactors based on UV LEDs for pollution remediation in water. In OCEANS 2017 - Aberdeen: Proceedings IEEE .
Prabhu, R ; Hewitt, F ; Georgieva, G ; Lawton, Linda A ; Meenakshi, H N ; Robertson, P K J. / Energy efficient operation of photocatalytic reactors based on UV LEDs for pollution remediation in water. OCEANS 2017 - Aberdeen: Proceedings. IEEE , 2017.
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abstract = "Photocatalytic technology using TiO2 is one of the emerging approaches for water treatment, especially as a final step to remove complex organics such as pesticides, hormones or humic acids. Titanium dioxide (TiO2) is a semiconductor material with strong UV absorption band and exhibits strong photocatalytic activity. The photocatalytic activity of TiO2 powders have been extensively studied, using UV light sources. However, the incident photons that initiate the process of photocatalytic oxidation using titanium dioxide are not efficiently used, this is responsible for the low photonic efficiency that characterise oxidation of aqueous pollutants hence its limitation in industrial applications. Periodic illumination has been investigated as a means of increasing the photonic efficiency in a photoreactor with acid orange as a model pollutant. Results indicate more than four-fold increase in photonic efficiency through periodic illumination compared to continuous illumination. This approach can improve the energy efficiency of the photocatalytic water treatment systems.",
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Prabhu, R, Hewitt, F, Georgieva, G, Lawton, LA, Meenakshi, HN & Robertson, PKJ 2017, Energy efficient operation of photocatalytic reactors based on UV LEDs for pollution remediation in water. in OCEANS 2017 - Aberdeen: Proceedings. IEEE , Oceans'17 MTS/IEEE , Aberdeen, United Kingdom, 19/06/2017.

Energy efficient operation of photocatalytic reactors based on UV LEDs for pollution remediation in water. / Prabhu, R; Hewitt, F; Georgieva, G; Lawton, Linda A; Meenakshi, H N; Robertson, P K J.

OCEANS 2017 - Aberdeen: Proceedings. IEEE , 2017.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Energy efficient operation of photocatalytic reactors based on UV LEDs for pollution remediation in water

AU - Prabhu, R

AU - Hewitt, F

AU - Georgieva, G

AU - Lawton, Linda A

AU - Meenakshi, H N

AU - Robertson, P K J

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N2 - Photocatalytic technology using TiO2 is one of the emerging approaches for water treatment, especially as a final step to remove complex organics such as pesticides, hormones or humic acids. Titanium dioxide (TiO2) is a semiconductor material with strong UV absorption band and exhibits strong photocatalytic activity. The photocatalytic activity of TiO2 powders have been extensively studied, using UV light sources. However, the incident photons that initiate the process of photocatalytic oxidation using titanium dioxide are not efficiently used, this is responsible for the low photonic efficiency that characterise oxidation of aqueous pollutants hence its limitation in industrial applications. Periodic illumination has been investigated as a means of increasing the photonic efficiency in a photoreactor with acid orange as a model pollutant. Results indicate more than four-fold increase in photonic efficiency through periodic illumination compared to continuous illumination. This approach can improve the energy efficiency of the photocatalytic water treatment systems.

AB - Photocatalytic technology using TiO2 is one of the emerging approaches for water treatment, especially as a final step to remove complex organics such as pesticides, hormones or humic acids. Titanium dioxide (TiO2) is a semiconductor material with strong UV absorption band and exhibits strong photocatalytic activity. The photocatalytic activity of TiO2 powders have been extensively studied, using UV light sources. However, the incident photons that initiate the process of photocatalytic oxidation using titanium dioxide are not efficiently used, this is responsible for the low photonic efficiency that characterise oxidation of aqueous pollutants hence its limitation in industrial applications. Periodic illumination has been investigated as a means of increasing the photonic efficiency in a photoreactor with acid orange as a model pollutant. Results indicate more than four-fold increase in photonic efficiency through periodic illumination compared to continuous illumination. This approach can improve the energy efficiency of the photocatalytic water treatment systems.

M3 - Conference contribution

SN - 978-1-5090-5279-0

BT - OCEANS 2017 - Aberdeen: Proceedings

PB - IEEE

ER -

Prabhu R, Hewitt F, Georgieva G, Lawton LA, Meenakshi HN, Robertson PKJ. Energy efficient operation of photocatalytic reactors based on UV LEDs for pollution remediation in water. In OCEANS 2017 - Aberdeen: Proceedings. IEEE . 2017