Table 2 Elemental analysis for leaf and frond feedstock and biochar samples
| Â | EDX analysis | CHNS analysis | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sample | %C | %O | %Mg | %Si | %S | %Cl | %Ca | %P | %Na | %P | %Al | % N | % C | %H | %S | %O |
Leaf feedstock | 37.7 | 57.9 | 0.5 | 1.5 | 0.7 | 0.4 | 1.0 | 0 | 0 | 0 | 0.3 | 0.6 | 31.2 | 4.5 | 0 | 63.7 |
Leaf 400 | 44.7 | 39.7 | 0.4 | 10.3 | 0.4 | 0.4 | 3.9 | 0.3 | 0 | 0 | 0 | 0.6 | 47.8 | 3.0 | 0 | 48.6 |
Leaf 500 | 49.1 | 35.7 | 0.3 | 9.9 | 0 | 0.5 | 3.8 | 0.3 | 0.4 | 0 | 0 | 0.6 | 49.2 | 2.1 | 0 | 48.1 |
Leaf 600 | 67.3 | 25.0 | 0.5 | 3.4 | 0 | 0.0 | 3.9 | 0 | 0 | 0 | 0 | 0.6 | 57.7 | 1.0 | 0 | 29.1 |
Frond feedstock | 45.5 | 47.6 | 0 | 0 | 0 | 2.4 | 4.6 | 0 | 0 | 0 | 0 | 0.2 | 41.9 | 5.8 | 0 | 52.1 |
Frond 400 | 66.9 | 23.3 | 0.8 | 1.5 | 0.8 | 1.0 | 4.6 | 0.7 | 0.5 | 0 | 0 | 0.1 | 46.9 | 3.5 | 0 | 49.8 |
Frond 500 | 72.0 | 17.8 | 0.9 | 1.6 | 0.6 | 1.3 | 4.2 | 1.0 | 0.7 | 0 | 0 | 0.1 | 50.9 | 3.0 | 0 | 45.6 |
Frond 600 | 74.8 | 11.5 | 0.4 | 0.4 | 1.0 | 4.3 | 5.0 | 1.0 | 1.6 | 0 | 0 | 0.1 | 66.7 | 2.3 | 0 | 30.9 |