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. 1977 May;33(5):1019-22.
doi: 10.1128/aem.33.5.1019-1022.1977.

Destruction of coliforms in water and sewage water by dye-sensitized photooxidation

A J Acher, B J Juven

Destruction of coliforms in water and sewage water by dye-sensitized photooxidation

A J Acher et al. Appl Environ Microbiol. 1977 May.

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.

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References

    1. Appl Microbiol. 1973 May;25(5):793-9 - PubMed
    1. J Water Pollut Control Fed. 1973 Oct;45(10):2180-93 - PubMed
    1. Science. 1968 Nov 29;162(3857):963-70 - PubMed
    1. Appl Environ Microbiol. 1976 Jan;31(1):141-2 - PubMed

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