Disinfection kinetics of Legionella pneumophila by hydrogen peroxide

The disinfection kinetics of Legionella pneumophila by hydrogen peroxide is investigated. The change in viable cell concentration with time can be wel l described with first-order reaction kinetics with lag time. The first-ord er disinfection rate constant increases with increasing hydrogen peroxide c oncentration and temperature. The lag time decreases with increasing hydrog en peroxide concentration and temperature. The empirical equations are pres ented to estimate the disinfection kinetic parameters. The results obtained in the present study are expected to be helpful for practical operation of water system such as therapeutic spa and hot-tub for disinfection of Legio nella pneumophila by hydrogen peroxide.