Biochar type | Pyrolysis temperature (°C) | Yield (%) | Elemental analysis (%) | Atomic ration (%) | SBET (m2/g) | References | |||||
---|---|---|---|---|---|---|---|---|---|---|---|
[C] | [H] | [O] | [N] | [S] | H/C | O/C | |||||
Cottonseed Hull Biochar | 200 | 83.4 ± 0.8 | 51.9 ± 0.5 | 6.0 ± 0.1 | 40.5 ± 0.4 | 0.60 ± 0.04 | 0.99 ± 0.01 | 1.38 ± 0.02 | 0.59 ± 0.01 | n.d | [65] |
Cottonseed Hull Biochar | 350 | 36.8 ± 0.1 | 77 ± 1 | 4.53 ± 0.05 | 15.70 ± 0.04 | 1.9 ± 0.4 | 0.8 ± 0.1 | 0.70 ± 0.01 | 0.153 ± 0.001 | 4.7 ± 0.8 | |
Cottonseed Hull Biochar | 500 | 28.9 ± 0.1 | 87.5 ± 0.1 | 2.82 ± 0.02 | 7.6 ± 0.2 | 1.5 ± 0.1 | 0.50 ± 0.01 | 0.385 ± 0.003 | 0.065 ± 0.002 | 0 | |
Cottonseed Hull Biochar | 650 | 25.4 ± 0.2 | 91.0 ± 0.4 | 1.26 ± 0.02 | 5.9 ± 0.3 | 1.6 ± 0.1 | 0.26 ± 0.03 | 0.166 ± 0.002 | 0.049 ± 0.003 | 34 ± 3 | |
Cottonseed Hull Biochar | 800 | 24.2 ± 0.6 | 90 ± 1 | 0.6 ± 0.1 | 7 ± 1 | 1.9 ± 0.1 | 0.16 ± 0.03 | 0.08 ± 0.01 | 0.06 ± 0.01 | 322 ± 1 | |
Cotton Stalk Biochar | 250 | 71.17 ± 0.49 | 50.93 | 5.29 | 33.00 | 1.29 | 0.18 | 10.39 | 64.79 | 4.19 | [66] |
Cotton Stalk Biochar | 350 | 42.75 ± 0.63 | 60.33 | 4.17 | 19.15 | 1.56 | 0.24 | 6.91 | 31.74 | 4.37 | |
Cotton Stalk Biochar | 450 | 35.62 ± 0.53 | 64.52 | 3.27 | 12.65 | 1.51 | 0.29 | 5.07 | 19.61 | 4.57 | |
Cotton Stalk Biochar | 550 | 33.21 ± 0.11 | 66.70 | 2.54 | 10.77 | 1.33 | 0.26 | 3.81 | 16.15 | 6.04 | |
Cotton Stalk Biochar | 650 | 31.39 ± 0.29 | 67.77 | 1.89 | 9.07 | 1.24 | 0.30 | 2.79 | 13.38 | 4.43 |