2.1 Sampling and characterization:
The Mixed Waste Activated Sludge (MWAS) used in this study was withdrawn
from mixed sludge sampling point before anaerobic digester at Beenyup
Wastewater Treatment Plant (BWWTP), Western Australia. The MWAS sample
consists of raw primary sludge (PS) and thickened excess activated
sludge (TEAS) mixed in the ratio 65:35, as it is available in the plant.
The digested sludge (DS) was collected from the sampling port of
anaerobic digester of the same treatment plant. The fruit and vegetable
waste (FVW) used in the current study was prepared by blending the
components given in Table 1. MWAS and FVW were mixed in the ratio 1:1
and 3:1 (on a total solids basis). All the samples were freshly
collected/ prepared and used for experiments to avoid any microbial
contamination during storage.