Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Disinfection Resistance of 'Legionella pneumophila' and 'Escherichia coli' Grown in Continuous and Batch Culture.
Author Hoff, J. C. ; Roberts, P. V. ; Matin, A. ; Berg, J. D. ;
CORP Author Stanford Univ., CA. ;Rio Linda Chemical Co., CA.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Year Published 1985
Report Number EPA-R-808986; EPA/600/D-85/088;
Stock Number PB85-193316
Additional Subjects Disinfection ; Bacteria ; Chlorine dioxide ; Cultures(Biology) ; Dosage ; Legionella pneumophila ; Escherichia coli
Library Call Number Additional Info Location Last
NTIS  PB85-193316 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 26p
Legionella pneumophila and Escherichia coli were grown in continuous culture to simulate nutrient-limited, sub-optimal growth conditions that are often experienced in aquatic environments. Washed cultures were treated with chlorine dioxide (C10(2)) or chlorine at a dose equal to 0.75 mg/l. Results showed that the chemostat grown populations of both species were more resistant to inactivation than were their batch-culture grown counterparts. C10(2) was shown to be superior to chlorine on a mass-dose basis in inactivating L. pneumophila. The adequacy of E. coli, a major constituent of the coliform group, as an indicator of Legionella inactivation depended on the antecedent growth conditions: the inactivation behavior of the two organisms grown in continuous culture was similar, whereas L. pneumophila was more resistant than E. coli when both were grown in batch culture.