Table 1 Proximate analysis of WW sludges reported in the experimental papers reviewed in this study. The values are converted into wt% on a dry basis
Study No. | Study | Feed moisture input (mf) % | Ash | Fixed Carbon | Volatile Matter |
|---|---|---|---|---|---|
1 | Trinh et al. [39] | 7.30 | 50.49 | 8.52 | 40.99 |
2 | Fonts et al. [40] | 6.60 | 44.22 | 6.42 | 49.36 |
3 | Shen et al. [41] | 3.00 | 22.60 | 16.10 | 61.30 |
4 | Alvarez et al. [42] | 5.60 | 37.20 | 8.60 | 54.20 |
5 | Chen et al. [43] | 6.58 | 43.44 | 5.84 | 50.72 |
6 | Chen et al. [44] | 84.00 | 28.96 | 9.41 | 61.63 |
7 | Freda et al. [45] | 3.53 | 30.73 | 2.67 | 66.59 |
8 | Lee et al. [46] | 6.33 | 27.94 | 8.32 | 63.75 |
9a | Fonts et al. [47] | 6.70 | 42.77 | 6.86 | 50.38 |
9b | 5.30 | 54.91 | 4.65 | 40.44 | |
9c | 7.10 | 44.13 | 5.71 | 50.16 | |
10 | Huang et al. [48] | 11.79 | 27.89 | 10.00 | 62.11 |
11 | Xie et al. [49] | 4.53 | 15.01 | 16.42 | 68.57 |
12 | Zhou et al. [50] | – | 17.50 | 0.30 | 82.20 |
13 | Calvo et al. [51] | 7.90 | 37.90 | 7.10 | 55.10 |
14 | Qian et al. [52] | 87.00 | 27.00 | 21.90 | 51.12 |
15 | Pedroza et al. [53] | 6.00 | 40.53 | 2.13 | 57.34 |