Table 1 Elemental analysis (dry basis) and ash of raw material and hydrochar
From: Effects of potassium on hydrothermal carbonization of sorghum bagasse
Sample | C [w/w %] | H [w/w %] | O [w/w %] | N [w/w %] | Ash [w/w %] | H/C | O/C |
|---|---|---|---|---|---|---|---|
Raw sorghum | 43.5 ± 0.3 | 6.48 ± 0.01 | 44.4 ± 0.3 | 0.45 ± 0.03 | 5.27 ± 0.4 | 1.79 | 0.77 |
Washed sorghum | 45.1 ± 0.4 | 6.51 ± 0.03 | 46.2 ± 0.3 | 0.34 ± 0.02 | 1.92 ± 0.1 | 1.73 | 0.77 |
HC_1h | 53.9 ± 0.2 | 6.26 ± 0.02 | 37.9 ± 0.3 | 0.60 ± 0.04 | 1.34 ± 0.2 | 1.39 | 0.53 |
HC_2h | 60.9 ± 0.4 | 5.93 ± 0.00 | 30.3 ± 1.2 | 0.80 ± 0.05 | 2.03 ± 0.7 | 1.17 | 0.37 |
HC_3h | 67.8 ± 0.5 | 5.54 ± 0.02 | 25.1 ± 0.6 | 0.60 ± 0.05 | 1.03 ± 0.1 | 0.98 | 0.28 |
W-HC_1h | 52.7 ± 0.8 | 6.34 ± 0.01 | 39.4 ± 0.8 | 0.36 ± 0.07 | 1.16 ± 0.04 | 1.44 | 0.56 |
W-HC_2h | 63.4 ± 0.5 | 5.63 ± 0.04 | 30.0 ± 0.3 | 0.40 ± 0.01 | 0.62 ± 0.1 | 1.07 | 0.36 |
W-HC_3h | 68.3 ± 0.3 | 5.22 ± 0.02 | 25.0 ± 0.3 | 0.46 ± 0.02 | 1.01 ± 0.05 | 0.92 | 0.27 |
K-HC_1h | 51.9 ± 0.4 | 6.37 ± 0.01 | 39.0 ± 0.4 | 0.31 ± 0.00 | 2.44 ± 0.07 | 1.47 | 0.56 |
K-HC_2h | 59.6 ± 0.9 | 6.12 ± 0.04 | 30.0 ± 0.5 | 0.50 ± 0.03 | 3.81 ± 0.4 | 1.23 | 0.38 |
K-HC_3h | 67.2 ± 1.0 | 5.92 ± 0.03 | 22.7 ± 0.8 | 0.68 ± 0.06 | 3.47 ± 0.3 | 1.06 | 0.25 |