Destruction of coliforms in water and sewage water by dye-sensitized photooxidation.
Appl Environ Microbiol
; 33(5): 1019-22, 1977 May.
Article
em En
| MEDLINE
| ID: mdl-327928
ABSTRACT
A new approach to disinfection of water and sewage water, by oxidative destruction of microorganisms by photosensitization, is described. Samples of water and sewage water, to which an inoculum of fecal Escherichia coli had been added, were exposed to solar radiation in the presence of a dye sensitizer, under continuous aeration. The effects of the sensitizer methylene blue at concentrations of 0 to 10 mg/liter, different radiation times from 0 to 2 h, and sunlight intensities of 0, 68, and 2,030 muE/m2 per s were investigated. In laboratory-scale experiments, 1.3 X 10(9) coliforms in 100 ml of oxidation pond municipal sewage water containing 0.5 mg of methylene blue were destroyed in about 30 min. Similar results were obtained with nonchlorinated potable water. These results demonstrate the possibilities available for the disinfection of water and sewage water by this method.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Esgotos
/
Luz Solar
/
Microbiologia da Água
/
Escherichia coli
/
Azul de Metileno
Idioma:
En
Revista:
Appl Environ Microbiol
Ano de publicação:
1977
Tipo de documento:
Article