You have no items in your shopping cart.
ABSTRACT
The aim of this research was to assess the solar disinfection of water. Standard bacteriological methods were used to enumerate the total bacterial count using pour plate methods. The bacterial isolates were characterized and identified using morphological and biochemical methods and sugar fermentation test. the bacterial colony drastically reduced in respect to days of exposure to sunlight. For the pet bottle with water and E.coli treatment, the initial colony count was 10.01703 (log10 cfu/ml) while it drastically reduced in the final hour of exposure to 7.69897. the pet bottle with Salmonella treatment also reduced in colony count from day zero to day four with values of 10.07555 to 7.69897 (log10 cfu/ml). however the pet bottle with only water had the lowest count from day zero to day four with log10 cfu/ml values of 4.728354 to 2.69897. From this study, the percentage reduction of bacterial deactivation were also recorded. The pet bottle treated with E.coli had a percentage reduction of 99.52% from day zero to day 4, pet bottle treated with Salmonella sp had a percentage reduction of 99.58 from day zero to day 4, while the pet with water only also showed a reduction in percentage value from day zero to day four with value of 99.07%. It has been proven that sunlight is effective in the inactivation of pathogenic microorganism strains that are responsible for almost all waterborne diseases. The presence of natural organic substances can negatively affect pathogen inactivation by sunlight. In addition, some pathogenic microorganisms may resist inactivation by sunlight. Water treatment and efficient inactivation can be obtained by effective design of solar energy collection technology. Thereby, the longer the sun was, the greater the removal rates of microorganism.
