Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Comparison of the Biocidal Efficiency of Alternative Disinfectants.
Author Hoff, John C. ; Geldreich, Edwin E. ;
CORP Author Municipal Environmental Research Lab., Cincinnati, OH.
Year Published 1981
Report Number EPA-600/J-81-309;
Stock Number PB81-240863
Additional Subjects Biocides ; Disinfectants ; Ozone ; Comparison ; Efficiency ; Potable water ; Reprints ; Drinking water ; Chlorine oxide(ClO2) ; Chloroamines
Library Call Number Additional Info Location Last
NTIS  PB81-240863 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 6p
Of the current potential alternatives to free residual chlorine for drinking water disinfection (ozone, chlorine dioxide, and chloroamines), ozone is the most potent biocide. Chlorine dioxide is about on a par with hypochlorous acid, but in contrast to free residual chloride, its efficiency increases substantially as pH increases in the range at which disinfection is usually applied. Chloramines are weaker biocides than hypochlorite ion, the least efficient form of free residual chlorine. Precise quantitative ranking of biocidal efficiencies is not possible because efficiencies differ with different microorganisms and experimental conditions. Laboratory studies are not always directly applicable to disinfectant use in the field.