Photocatalytic enhancement of solar water disinfection for application in developing regions

PSM Dunlop, DM Alrousan, MI Polo-Lopez, P Fernandez-Ibanez, JA Byrne

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

Abstract

Solar water disinfection (SODIS) is an effective, simple, household level, point-of-use technology suitable for application in developing countries. Contaminated water is placed in a plastic container (typically a 2L PET bottle) and exposed to sunlight for at least 6 hours. Laboratory and field trials have demonstrated SODIS to effective against a wide range of waterborne pathogens with health impact assessments demonstrating significant benefits from consumption of SODIS treated water. Photocatalytic (PC) enhancement of the SODIS process could provide larger volumes of safe drinking water and reduce the sunlight exposure time.Pilot scale, modular PC-SODIS reactors were designed and constructed from low-cost materials and tested, under real sunlight the south of Spain, for their efficiency to disinfect water containing ~1 x106 Escherichia coil cells/mL. The inclusion of an immobilised nanostructured titanium dioxide coating within 1.25 L static batch and 7 L re-circulating reactors accelerated the rate of disinfection with 6-log kill observed in 3 hours. Complete disinfection was not observed in re-circulating SODIS reactors. Photocatalytic enhancement was observed during full sun and cloudy weather conditions.
LanguageEnglish
Title of host publicationUnknown Host Publication
Pages176-182
Number of pages7
Publication statusPublished - 28 Sep 2009
EventInternational Workshop on Urbanisation, Land Use, Land Degradation, and Environment - Denizli, Turkey
Duration: 28 Sep 2009 → …

Workshop

WorkshopInternational Workshop on Urbanisation, Land Use, Land Degradation, and Environment
Period28/09/09 → …

Fingerprint

disinfection
water
health impact
coating
pathogen
plastic
developing world
drinking water
cost
reactor

Keywords

  • photocatalysis
  • titanium dioxide
  • disinfection
  • SODIS
  • pilot-scale

Cite this

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title = "Photocatalytic enhancement of solar water disinfection for application in developing regions",
abstract = "Solar water disinfection (SODIS) is an effective, simple, household level, point-of-use technology suitable for application in developing countries. Contaminated water is placed in a plastic container (typically a 2L PET bottle) and exposed to sunlight for at least 6 hours. Laboratory and field trials have demonstrated SODIS to effective against a wide range of waterborne pathogens with health impact assessments demonstrating significant benefits from consumption of SODIS treated water. Photocatalytic (PC) enhancement of the SODIS process could provide larger volumes of safe drinking water and reduce the sunlight exposure time.Pilot scale, modular PC-SODIS reactors were designed and constructed from low-cost materials and tested, under real sunlight the south of Spain, for their efficiency to disinfect water containing ~1 x106 Escherichia coil cells/mL. The inclusion of an immobilised nanostructured titanium dioxide coating within 1.25 L static batch and 7 L re-circulating reactors accelerated the rate of disinfection with 6-log kill observed in 3 hours. Complete disinfection was not observed in re-circulating SODIS reactors. Photocatalytic enhancement was observed during full sun and cloudy weather conditions.",
keywords = "photocatalysis, titanium dioxide, disinfection, SODIS, pilot-scale",
author = "PSM Dunlop and DM Alrousan and MI Polo-Lopez and P Fernandez-Ibanez and JA Byrne",
year = "2009",
month = "9",
day = "28",
language = "English",
pages = "176--182",
booktitle = "Unknown Host Publication",

}

Dunlop, PSM, Alrousan, DM, Polo-Lopez, MI, Fernandez-Ibanez, P & Byrne, JA 2009, Photocatalytic enhancement of solar water disinfection for application in developing regions. in Unknown Host Publication. pp. 176-182, International Workshop on Urbanisation, Land Use, Land Degradation, and Environment, 28/09/09.

Photocatalytic enhancement of solar water disinfection for application in developing regions. / Dunlop, PSM; Alrousan, DM; Polo-Lopez, MI; Fernandez-Ibanez, P; Byrne, JA.

Unknown Host Publication. 2009. p. 176-182.

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

TY - GEN

T1 - Photocatalytic enhancement of solar water disinfection for application in developing regions

AU - Dunlop, PSM

AU - Alrousan, DM

AU - Polo-Lopez, MI

AU - Fernandez-Ibanez, P

AU - Byrne, JA

PY - 2009/9/28

Y1 - 2009/9/28

N2 - Solar water disinfection (SODIS) is an effective, simple, household level, point-of-use technology suitable for application in developing countries. Contaminated water is placed in a plastic container (typically a 2L PET bottle) and exposed to sunlight for at least 6 hours. Laboratory and field trials have demonstrated SODIS to effective against a wide range of waterborne pathogens with health impact assessments demonstrating significant benefits from consumption of SODIS treated water. Photocatalytic (PC) enhancement of the SODIS process could provide larger volumes of safe drinking water and reduce the sunlight exposure time.Pilot scale, modular PC-SODIS reactors were designed and constructed from low-cost materials and tested, under real sunlight the south of Spain, for their efficiency to disinfect water containing ~1 x106 Escherichia coil cells/mL. The inclusion of an immobilised nanostructured titanium dioxide coating within 1.25 L static batch and 7 L re-circulating reactors accelerated the rate of disinfection with 6-log kill observed in 3 hours. Complete disinfection was not observed in re-circulating SODIS reactors. Photocatalytic enhancement was observed during full sun and cloudy weather conditions.

AB - Solar water disinfection (SODIS) is an effective, simple, household level, point-of-use technology suitable for application in developing countries. Contaminated water is placed in a plastic container (typically a 2L PET bottle) and exposed to sunlight for at least 6 hours. Laboratory and field trials have demonstrated SODIS to effective against a wide range of waterborne pathogens with health impact assessments demonstrating significant benefits from consumption of SODIS treated water. Photocatalytic (PC) enhancement of the SODIS process could provide larger volumes of safe drinking water and reduce the sunlight exposure time.Pilot scale, modular PC-SODIS reactors were designed and constructed from low-cost materials and tested, under real sunlight the south of Spain, for their efficiency to disinfect water containing ~1 x106 Escherichia coil cells/mL. The inclusion of an immobilised nanostructured titanium dioxide coating within 1.25 L static batch and 7 L re-circulating reactors accelerated the rate of disinfection with 6-log kill observed in 3 hours. Complete disinfection was not observed in re-circulating SODIS reactors. Photocatalytic enhancement was observed during full sun and cloudy weather conditions.

KW - photocatalysis

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KW - pilot-scale

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BT - Unknown Host Publication

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