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Table 5 Comparative analysis of chemical properties in biochar obtained from softwood and hemp

From: Effect of feedstock and microwave pyrolysis temperature on physio-chemical and nano-scale mechanical properties of biochar

Sample Proximate analysis, wt% Ultimate analysis, wt%
Moisture content Volatile matter Fixed carbon Ash C H N O
Softwood (raw) 11.5 67.3 19.5 1.7 44.43 6.16 0.18 49.23
Hemp (raw) 10.7 69.6 18.8 0.9 45.71 5.89 48.40
SW-2100 4.8 32.1 60.0 3.1 79.97 3.53 0.01 16.49
SW-2400 4.7 29.2 61.3 4.8 79.82 3.55 0.01 16.62
SW-2700 3.9 25.0 69.1 2.0 77.48 3.64 0.10 18.78
HM-2100 2.8 27.6 66.8 2.8 78.19 3.22 0.69 17.90
HM-2400 4.8 26.1 68.1 1.0 76.95 3.32 0.74 18.99
HM-2700 2.7 25.0 71.3 1.0 78.54 3.25 0.59 17.62