Capability of 19-L polycarbonate plastic water cooler containers for efficient solar water disinfection (SODIS): Field case studies in India, Bahrain and Spain

M.B. Keogh, M. Castro-Alférez, M.I. Polo-López, I. Fernández Calderero, Y.A. Al-Eryani, C. Joseph-Titus, B. Sawant, R. Dhodapkar, C. Mathur, K.G. McGuigan, Pilar Fernandez-Ibanez

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The small treated volume (typically �2 L) associated with polyethylene terephthalate (PET) bottles that are most frequently used in solar water disinfection (SODIS), is a major obstacle to uptake of this water treatment technology in resource-poor environments. In order to address this problem we have conducted a series of experiments in Spain, Bahrain and India, to assess the efficacy of large volume (19 L) transparent plastic (polycarbonate) water cooler/dispenser containers (WDCs) as SODIS reactors to inactivate Escherichia coli and Enterococcus faecalis, under strong natural sunlight. Reduction values of 6 log10 units (LRV = 6.0) have been observed using WDCs in each location. Additional comparisons between 2-L PET bottles and 19-L indicate that WDCs provide bacterial inactivation similar in both systems. SODIS disinfection experiments in turbid water (100 NTU) in both reactors showed very good inactivation efficiency. LRVs of 6 were obtained for E. coli in both WDC and 2-L PET bottles, and in the case of E. faecalis LRV = 5 and 6 were observed in Spain and Bahrain, respectively. These studies demonstrate that under conditions of strong sunlight and mild temperature, 19 L water dispenser containers can be used to provide adequate volumes of SODIS treated water for households or larger community applications such as schools or clinics in the developing world.
LanguageEnglish
Pages1-11
JournalSolar Energy
Volume116
DOIs
Publication statusAccepted/In press - 18 Mar 2015

Fingerprint

Disinfection
Polycarbonates
Containers
Plastics
Dispensers
Water
Polyethylene Terephthalates
Bottles
Polyethylene terephthalates
Escherichia coli
lexan
Water treatment
Experiments

Keywords

  • SODIS
  • PET bottle
  • Water dispenser container
  • E. coli
  • E. faecalis

Cite this

Keogh, M.B. ; Castro-Alférez, M. ; Polo-López, M.I. ; Fernández Calderero, I. ; Al-Eryani, Y.A. ; Joseph-Titus, C. ; Sawant, B. ; Dhodapkar, R. ; Mathur, C. ; McGuigan, K.G. ; Fernandez-Ibanez, Pilar. / Capability of 19-L polycarbonate plastic water cooler containers for efficient solar water disinfection (SODIS): Field case studies in India, Bahrain and Spain. 2015 ; Vol. 116. pp. 1-11.
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Keogh, MB, Castro-Alférez, M, Polo-López, MI, Fernández Calderero, I, Al-Eryani, YA, Joseph-Titus, C, Sawant, B, Dhodapkar, R, Mathur, C, McGuigan, KG & Fernandez-Ibanez, P 2015, 'Capability of 19-L polycarbonate plastic water cooler containers for efficient solar water disinfection (SODIS): Field case studies in India, Bahrain and Spain', vol. 116, pp. 1-11. https://doi.org/10.1016/j.solener.2015.03.035

Capability of 19-L polycarbonate plastic water cooler containers for efficient solar water disinfection (SODIS): Field case studies in India, Bahrain and Spain. / Keogh, M.B.; Castro-Alférez, M.; Polo-López, M.I.; Fernández Calderero, I.; Al-Eryani, Y.A.; Joseph-Titus, C.; Sawant, B.; Dhodapkar, R.; Mathur, C.; McGuigan, K.G.; Fernandez-Ibanez, Pilar.

Vol. 116, 18.03.2015, p. 1-11.

Research output: Contribution to journalArticle

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T1 - Capability of 19-L polycarbonate plastic water cooler containers for efficient solar water disinfection (SODIS): Field case studies in India, Bahrain and Spain

AU - Keogh, M.B.

AU - Castro-Alférez, M.

AU - Polo-López, M.I.

AU - Fernández Calderero, I.

AU - Al-Eryani, Y.A.

AU - Joseph-Titus, C.

AU - Sawant, B.

AU - Dhodapkar, R.

AU - Mathur, C.

AU - McGuigan, K.G.

AU - Fernandez-Ibanez, Pilar

PY - 2015/3/18

Y1 - 2015/3/18

N2 - The small treated volume (typically �2 L) associated with polyethylene terephthalate (PET) bottles that are most frequently used in solar water disinfection (SODIS), is a major obstacle to uptake of this water treatment technology in resource-poor environments. In order to address this problem we have conducted a series of experiments in Spain, Bahrain and India, to assess the efficacy of large volume (19 L) transparent plastic (polycarbonate) water cooler/dispenser containers (WDCs) as SODIS reactors to inactivate Escherichia coli and Enterococcus faecalis, under strong natural sunlight. Reduction values of 6 log10 units (LRV = 6.0) have been observed using WDCs in each location. Additional comparisons between 2-L PET bottles and 19-L indicate that WDCs provide bacterial inactivation similar in both systems. SODIS disinfection experiments in turbid water (100 NTU) in both reactors showed very good inactivation efficiency. LRVs of 6 were obtained for E. coli in both WDC and 2-L PET bottles, and in the case of E. faecalis LRV = 5 and 6 were observed in Spain and Bahrain, respectively. These studies demonstrate that under conditions of strong sunlight and mild temperature, 19 L water dispenser containers can be used to provide adequate volumes of SODIS treated water for households or larger community applications such as schools or clinics in the developing world.

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KW - SODIS

KW - PET bottle

KW - Water dispenser container

KW - E. coli

KW - E. faecalis

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