Escherichia coli inactivation kinetics in anaerobic digestion of dairy manure under moderate, mesophilic and thermophilic temperatures

AMB Express

Table 2 Summary of inactivation kinetics

Temperature	k(d^-1)	^a T _c(days)	^b R ²	^c D ₁₀ (days)
Low temp (25°C)	0.1177	> 60	0.81	9 - 10
Mesophilic temp (37°C)	0.1335	> 40	0.94	7 - 8
Thermophilic temp (52.5°C)	2.0069	< 4	0.93	< 1

^a T _c is required time for "complete" inactivation (first sample in which E. coli concentration was below detection limit.
^b R² values were obtained from liner regression between Log₁₀ E. coli concentrations (CFU/ml) and incubation periods (days).
^c D ₁₀ decimal reduction time (reduction of the population by one log-unit) corresponding to Figures 1a, 1b, and 1c.