conditions as shown in Table 3. Reactor health was monitored
through weekly analysis of volatile fatty acids (VFAs), pH,
alkalinity, and TS/VS on the digestate. The pH was tested using a
calibrated Hach SensION 3 pH meter, alkalinity analysis was performed
using Hach digital titrator, and VFAs were analyzed using
the Perkin Elmer Clarus 600 Gas Chromatograph equipped with a
Perkin Elmer Elite-FFAP column with a 5 m guard column and a
flame ionization detector (FID).