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Field comparison of solar water disinfection (SODIS) efficacy between glass and polyethylene terephalate (PET) plastic bottles under sub-Saharan weather conditions.
J Water Health. 2013 Dec; 11(4):729-37.JW

Abstract

Concerns about photodegradation products leaching from plastic bottle material into water during solar water disinfection (SODIS) are a major psychological barrier to increased uptake of SODIS. In this study, a comparison of SODIS efficacy using glass and plastic polyethylene terephalate (PET) bottles was carried out under strong real sunlight and overcast weather conditions at Makerere University in central Uganda. Both clear and turbid natural water samples from shallow wells and open dug wells, respectively, were used. Efficacy was determined from the inactivation of a wild strain of Escherichia coli in solar-exposed contaminated water in both glass and PET bottles. The studies reveal no significant difference in SODIS inactivation between glass and PET bottles (95% CI, p > 0.05), for all water samples under the different weather conditions except for clear water under overcast conditions where there was a small but significant difference (95% CI, p = 0.047) with less viable bacterial counts in PET bottles at two intermediate time points but not at the end of the exposure. The results demonstrate that SODIS efficacy in glass under tropical field conditions is comparable to PET plastic. SODIS users in these regions can choose either of reactors depending on availability and preference of the user.

Authors+Show Affiliations

Department of Physiology and Medical Physics, The Royal College of Surgeons in Ireland, Dublin 2, Ireland E-mail: kmcguigan@rcsi.ie.School of Biotechnology, Dublin City University, Collins Avenue, Dublin 9, Ireland.College of Agricultural and Environmental Sciences, Department of Food Technology, Nutrition and Bio-engineering Makerere University, Kampala, Uganda.Department of Physiology and Medical Physics, The Royal College of Surgeons in Ireland, Dublin 2, Ireland E-mail: kmcguigan@rcsi.ie.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24334847

Citation

Asiimwe, J K., et al. "Field Comparison of Solar Water Disinfection (SODIS) Efficacy Between Glass and Polyethylene Terephalate (PET) Plastic Bottles Under sub-Saharan Weather Conditions." Journal of Water and Health, vol. 11, no. 4, 2013, pp. 729-37.
Asiimwe JK, Quilty B, Muyanja CK, et al. Field comparison of solar water disinfection (SODIS) efficacy between glass and polyethylene terephalate (PET) plastic bottles under sub-Saharan weather conditions. J Water Health. 2013;11(4):729-37.
Asiimwe, J. K., Quilty, B., Muyanja, C. K., & McGuigan, K. G. (2013). Field comparison of solar water disinfection (SODIS) efficacy between glass and polyethylene terephalate (PET) plastic bottles under sub-Saharan weather conditions. Journal of Water and Health, 11(4), 729-37. https://doi.org/10.2166/wh.2013.197
Asiimwe JK, et al. Field Comparison of Solar Water Disinfection (SODIS) Efficacy Between Glass and Polyethylene Terephalate (PET) Plastic Bottles Under sub-Saharan Weather Conditions. J Water Health. 2013;11(4):729-37. PubMed PMID: 24334847.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Field comparison of solar water disinfection (SODIS) efficacy between glass and polyethylene terephalate (PET) plastic bottles under sub-Saharan weather conditions. AU - Asiimwe,J K, AU - Quilty,B, AU - Muyanja,C K, AU - McGuigan,K G, PY - 2013/12/17/entrez PY - 2013/12/18/pubmed PY - 2014/2/28/medline SP - 729 EP - 37 JF - Journal of water and health JO - J Water Health VL - 11 IS - 4 N2 - Concerns about photodegradation products leaching from plastic bottle material into water during solar water disinfection (SODIS) are a major psychological barrier to increased uptake of SODIS. In this study, a comparison of SODIS efficacy using glass and plastic polyethylene terephalate (PET) bottles was carried out under strong real sunlight and overcast weather conditions at Makerere University in central Uganda. Both clear and turbid natural water samples from shallow wells and open dug wells, respectively, were used. Efficacy was determined from the inactivation of a wild strain of Escherichia coli in solar-exposed contaminated water in both glass and PET bottles. The studies reveal no significant difference in SODIS inactivation between glass and PET bottles (95% CI, p > 0.05), for all water samples under the different weather conditions except for clear water under overcast conditions where there was a small but significant difference (95% CI, p = 0.047) with less viable bacterial counts in PET bottles at two intermediate time points but not at the end of the exposure. The results demonstrate that SODIS efficacy in glass under tropical field conditions is comparable to PET plastic. SODIS users in these regions can choose either of reactors depending on availability and preference of the user. SN - 1477-8920 UR - https://www.unboundmedicine.com/medline/citation/24334847/Field_comparison_of_solar_water_disinfection__SODIS__efficacy_between_glass_and_polyethylene_terephalate__PET__plastic_bottles_under_sub_Saharan_weather_conditions_ L2 - https://iwaponline.com/jwh/article-lookup/doi/10.2166/wh.2013.197 DB - PRIME DP - Unbound Medicine ER -