Effect of several factors on pseudo-kinetics in chlorine disinfection of phage MS2

AbstractThe effect of pH, temperature, particulate matter, organic matter, and NH3 on phage MS2 inactivation using chlorine in pure water, synthetic water and filtered water samples was studied. And four possible models, including the Chick, Chick–Watson, Hom, and delayed Chick–Watson models were attempted to fit the experimental data. The virus inactivation achieved 4 logs at a CT value of 2.8 mg min/L, which met the United States Environmental Protection Agency standards. However, over 2 mg/L chlorine was needed to achieve the same goal in filtered water originated from two local water treatment plants. Furthermore, organic matter, pH, and temperature as well as the presence of NH3 and particulate matter strongly affected the chlorine inactivation of MS2. Among four possible models, delayed Chick–Watson model was found to provide the most suitable description of MS2 inactivation by chlorine. Furthermore, the equation of the inactivation rate was obtained. And the MS2 inactivation rate predicted by this ...