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Effect of solar water disinfection (SODIS) on model microorganisms under improved and field SODIS conditions

2007; UWA Publishing; Volume: 56; Issue: 4 Linguagem: Inglês

10.2166/aqua.2007.058

1365-2087

Simon Dejung, Iván Alexei Pérez Fuentes, Gabriela Almanza, Ruth Jarro, Lizeth Navarro, Gina Arias, Evelin Urquieta, Abraham Torrico, Wilma Fenandez, Mercedes Iriarte, Christof Birrer, Werner A. Stahel, Martin Wegelin,

TiO2 Photocatalysis and Solar Cells

Research Article| June 01 2007 Effect of solar water disinfection (SODIS) on model microorganisms under improved and field SODIS conditions Simon Dejung; Simon Dejung 1Swiss Federal Institute for Environmental Science and Technology (EAWAG), P.O. Box 611, CH-8600, Dübendorf, Switzerland Tel.: +41 -44 823 5073 Fax: +41 -44 823 5399; E-mail: sdejung@yahoo.com.mx; www.sodis.ch Search for other works by this author on: This Site PubMed Google Scholar Ivan Fuentes; Ivan Fuentes 2Centro de Aguas y Saneamiento Ambiental (CASA), Universidad Mayor de San Simon, Facultad de Ciencias y Tecnología, C. Sucre y Parque La Torre, Cochabamba, Bolivia Search for other works by this author on: This Site PubMed Google Scholar Gabriela Almanza; Gabriela Almanza 2Centro de Aguas y Saneamiento Ambiental (CASA), Universidad Mayor de San Simon, Facultad de Ciencias y Tecnología, C. Sucre y Parque La Torre, Cochabamba, Bolivia Search for other works by this author on: This Site PubMed Google Scholar Ruth Jarro; Ruth Jarro 2Centro de Aguas y Saneamiento Ambiental (CASA), Universidad Mayor de San Simon, Facultad de Ciencias y Tecnología, C. Sucre y Parque La Torre, Cochabamba, Bolivia Search for other works by this author on: This Site PubMed Google Scholar Lizeth Navarro; Lizeth Navarro 2Centro de Aguas y Saneamiento Ambiental (CASA), Universidad Mayor de San Simon, Facultad de Ciencias y Tecnología, C. Sucre y Parque La Torre, Cochabamba, Bolivia Search for other works by this author on: This Site PubMed Google Scholar Gina Arias; Gina Arias 2Centro de Aguas y Saneamiento Ambiental (CASA), Universidad Mayor de San Simon, Facultad de Ciencias y Tecnología, C. Sucre y Parque La Torre, Cochabamba, Bolivia Search for other works by this author on: This Site PubMed Google Scholar Evelin Urquieta; Evelin Urquieta 2Centro de Aguas y Saneamiento Ambiental (CASA), Universidad Mayor de San Simon, Facultad de Ciencias y Tecnología, C. Sucre y Parque La Torre, Cochabamba, Bolivia Search for other works by this author on: This Site PubMed Google Scholar Abraham Torrico; Abraham Torrico 2Centro de Aguas y Saneamiento Ambiental (CASA), Universidad Mayor de San Simon, Facultad de Ciencias y Tecnología, C. Sucre y Parque La Torre, Cochabamba, Bolivia Search for other works by this author on: This Site PubMed Google Scholar Wilma Fenandez; Wilma Fenandez 2Centro de Aguas y Saneamiento Ambiental (CASA), Universidad Mayor de San Simon, Facultad de Ciencias y Tecnología, C. Sucre y Parque La Torre, Cochabamba, Bolivia Search for other works by this author on: This Site PubMed Google Scholar Mercedes Iriarte; Mercedes Iriarte 2Centro de Aguas y Saneamiento Ambiental (CASA), Universidad Mayor de San Simon, Facultad de Ciencias y Tecnología, C. Sucre y Parque La Torre, Cochabamba, Bolivia Search for other works by this author on: This Site PubMed Google Scholar ... Show more Christof Birrer; Christof Birrer 3Swiss Federal Institute of Technology (ETH), Seminar für Statistik, CH-8092, Zürich, Switzerland Search for other works by this author on: This Site PubMed Google Scholar Werner A. Stahel; Werner A. Stahel 3Swiss Federal Institute of Technology (ETH), Seminar für Statistik, CH-8092, Zürich, Switzerland Search for other works by this author on: This Site PubMed Google Scholar Martin Wegelin Martin Wegelin 1Swiss Federal Institute for Environmental Science and Technology (EAWAG), P.O. Box 611, CH-8600, Dübendorf, Switzerland Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2007) 56 (4): 245–256. https://doi.org/10.2166/aqua.2007.058 Article history Received: September 15 2005 Accepted: February 02 2007 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation Simon Dejung, Ivan Fuentes, Gabriela Almanza, Ruth Jarro, Lizeth Navarro, Gina Arias, Evelin Urquieta, Abraham Torrico, Wilma Fenandez, Mercedes Iriarte, Christof Birrer, Werner A. Stahel, Martin Wegelin; Effect of solar water disinfection (SODIS) on model microorganisms under improved and field SODIS conditions. Journal of Water Supply: Research and Technology-Aqua 1 June 2007; 56 (4): 245–256. doi: https://doi.org/10.2166/aqua.2007.058 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex SODIS is a solar water disinfection process which works by exposing untreated water to the sun in plastic bottles. Field experiments were carried out in Cochabamba, Bolivia, to obtain standard UV-A (320–405 nm) dose values required to inactivate non-spore forming bacteria, spores of Bacillus subtilis, and wild type coliphages. Inactivation kinetics for non-spore forming bacteria are similar under SODIS conditions, exhibiting dose values ranging between 15 and 30 Wh m−2 for 1 log10 (90%) inactivation, 45 to 90 Wh m−2 for 3 log10 (99.9%), and 90 to 180 Wh m−2 for 6 log10 (99.9999%) inactivation. Pseudomonas aeruginosa was found to be the most resistant and Salmonella typhi, the most sensitive of the non-sporulating organisms studied here. Phages and spores serve as model organisms for viruses and parasite cysts. A UV-A dose of 85 to 210 Wh m−2 accumulated during one to two days was enough to inactivate 1 log10 (90%) of these strong biological structures. The process of SODIS depended mainly on the radiation dose [Wh m−2] an organism was exposed to. An irradiation intensity exceeding some 12 Wm−2 did not increase the inactivation constant. A synergistic effect of water temperatures below 50°C was not observed. Data plotting from various experiments on a single graph proved to be a reliable alternative method for analysis. Inactivation rates determined by this method were revealed to be within the same range as individual analysis. home-based, low-budget water purification method, solar water disinfection This content is only available as a PDF. © IWA Publishing 2007 You do not currently have access to this content.