The main physico-chemical parameters of PD were: pH: 7.7 ± 0.4, OCtotal: 390 ± 12 g/kg; Ntotal: 14.5 ± 1.1 g/kg,
Pavail: 9.2 ± 0.5 g/kg; Ktotal: 3.1 ± 0.1 g/kg; Natotal: 4.3 ± 0.1 g/kg; Total
C:N ratio: 26.9 ± 1.7. Food industry sludge (FIS) was procured
from wastewater treatment plant of a food industry located at Bahadurgarh,
Haryana, India.