Parameters Distillery sludge (IW1) Paint sludge (IW2) Saw dust (SD) Water hyacinth (WH) Cow dung (CD)
pH 8.30  ± 0.01 8.40  ±  0.01 7.5  ±  0.20 7.3  ±  0.20 8.7 ±  0.20
Total organic carbon (TOC) 37.29±0.01 49.31± 0.02 42.10 ± 0.21 41.7 ±  0.10 38.2 ± 0.21
Total Kjeldahl nitrogen (TKN) 0.68 ± 0.12 0.31 ± 0.15 0.16 ± 0.03 0.87  ±  0.05 0.53  ±  0.02
C: N ratio 54.83 ± 1.0 159.21±   1.10 249.42± 1.12 48.39  ±  1.01 72.1  ±  1.05
Total phosphorus (TP) 0.49 ± 0.01 0.01 ± 0.0 0.53 ± 0.02 0.83  ±  0.13 0.58  ± 0.14
Total potassium (TK) 0.48 ± 0.20 0.20 ± 0.18 1.73 ± 0.10 0.84  ±  0.05 0.61  ±  0.12
Table 2: Physico-chemical characteristics of the substrates; All values are mean (n =3) ± SD and given in percentage; *Significant (P<0.001)