Record Display for the EPA National Library Catalog


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 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
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.