Skip to main content

Table 1 Mean values ± standard error of the chemical and biochemical properties in the initial raw wastes used in the study

From: Comparative effectiveness of different composting methods on the stabilization, maturation and sanitization of municipal organic solid wastes and dried faecal sludge mixtures

Chemical and bio-chemical property Raw material
MSW DFS MSW:DFS (2:1)
pH 7.39 ± 0.02 6.34 ± 0.02 6.67 ± 0.01
EC (µs/m) 2233 ± 55.87 1258.67 ± 70.99 1583 ± 7.94
Total N (g kg−1) 10.08 ± 0.16 26.23 ± 0.09 15.59 ± 0.19
Total OC (g kg−1) 308.13 ± 1.65 299. 38 ± 2.25 301.88 ± 1.08
C:N ratio 30.58 ± 0.33 11.42 ± 0.08 19.37 ± 0.17
TVS (g kg−1) 559.81 ± 2.36 506.38 ± 6.28 523.40 ± 8.09
\({\text{NH}}_{ 4}^{ + }\) (mg kg−1) 479.15 ± 7.074 1943.02 ± 39.45 1014.27 ± 37.25
\({\text{NO}}_{ 3}^{ - }\) (mg kg−1) 184.68 ± 3.696 1875.43 ± 36.81 684.53 ± 7.90
\({\text{NH}}_{ 4}^{ + }\):\({\text{NO}}_{ 3}^{ - }\) ratio 2.595 ± 0.024 1.04 ± 0.02 1.48 ± 0.07
Germination Index 6.475 ± 0.48 42.06 ± 1.27 31.84 ± 1.58
Faecal coliforms (log10 cfu) 4.59 ± 0.01 4.73 ± 0.03 4.63 ± 0.04
Helminth egg g−1 TS 80.55 ± 4.81 38.88 ± 1.60
  1. MSW municipal solid waste, DFS dried faecal sludge, OC organic carbon, EC electrical conductivity, TVS total volatile solids, cfu colony forming units, TS total solids