Sign up & Download
Sign in

Bactericidal effect of solar water disinfection under real sunlight conditions.

by M Boyle, C Sichel, P Fernández-Ibáñez, G B Arias-Quiroz, M Iriarte-Puña, A Mercado, E Ubomba-Jaswa, K G McGuigan
Applied and environmental microbiology ()

Abstract

Batch solar disinfection (SODIS) inactivation kinetics are reported for suspensions in water of Campylobacter jejuni, Yersinia enterocolitica, enteropathogenic Escherichia coli, Staphylococcus epidermidis, and endospores of Bacillus subtilis, exposed to strong natural sunlight in Spain and Bolivia. The exposure time required for complete inactivation (at least 4-log-unit reduction and below the limit of detection, 17 CFU/ml) under conditions of strong natural sunlight (maximum global irradiance, approximately 1,050 W m(-2) +/- 10 W m(-2)) was as follows: C. jejuni, 20 min; S. epidermidis, 45 min; enteropathogenic E. coli, 90 min; Y. enterocolitica, 150 min. Following incomplete inactivation of B. subtilis endospores after the first day, reexposure of these samples on the following day found that 4% (standard error, 3%) of the endospores remained viable after a cumulative exposure time of 16 h of strong natural sunlight. SODIS is shown to be effective against the vegetative cells of a number of emerging waterborne pathogens; however, bacterial species which are spore forming may survive this intervention process.

Cite this document (BETA)

Readership Statistics

18 Readers on Mendeley
by Discipline
 
 
 
by Academic Status
 
44% Ph.D. Student
 
22% Post Doc
 
17% Student (Master)
by Country
 
6% Spain
 
6% Canada
 
6% Greece

Sign up today - FREE

Mendeley saves you time finding and organizing research. Learn more

  • All your research in one place
  • Add and import papers easily
  • Access it anywhere, anytime

Start using Mendeley in seconds!

Already have an account? Sign in