Fig 4. The effect of MIC of ammonia (0.105 M NH3; the equivalent of 1,468 NH3-N mg/L) on inactivation of ST4232 in digestate of week #3 of poultry carcass aerobic digestion.
Source of NH3 was (NH4)2SO4. The control contained only residual TAN (0.039 M) in the digestate collected at week #3 [24]. Week #3 represents an early-phase of decomposition characterized by high BOD, highest TSS & VSS levels, and the first visual evidence of the whole carcass breakup and disintegration. Data represent the means log10 of measured Salmonella concentrations of 4 aerobic reactors ± SD. Different letters in each treatment time indicate significant difference (p<0.05), n = 3.