Bacteria sensitivity index of UV disinfection of bacteria with shoulder effect

Wavelength synergistic effects in continuous flow-through water disinfection systems

“…2 (c, d)). This range of wavelengths (320-400 nm) has been extensively reported to activate both endogenous and exogenous photosensitizers, leading to the oxidation of biomolecules and, ultimately, cellular death ( Kumar et al., 2015 ; Maclean et al., 2008 ; Tang and Sillanpää, 2015 ). Also, low doses have been proven to induce many physiological alterations ( Eisenstark et al., 1996 ; Hiraku et al., 2007 ).…”

UV-C inactivation of Legionella rubrilucens

“…But this straight line doesn’t pass the expected 100%-point (1.0 E+00) for 0 mJ/cm 2 irradiation. This well-known phenomenon is called “shoulder effect” [ 15 ]. The UV-C sensitivity is lower for lower doses and increases asymptotically for higher doses.…”

E. coli Inactivation Kinetics Modeling in a Taylor-Couette UV Disinfection Reactor

“…where N is the initial microbial concentration, N t is the microbial concentration after contact time t, UV dose is the fluence (mW s cm -2 ), and k is the inactivation rate constant (cm 2 mW -1 s -1 ). However, if some deviation from the exponential law is noticed, UV inactivation of microorganisms must be interpreted by a more complex inactivation kinetics model [6,[12][13][14]. Although equation (1) looks simple, the prediction/modeling of a practical microorganism inactivation behavior based in such equation is a challenging task.…”