Chemical and physical properties of biochar
Chemical and physical properties of biochar.
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| Property | Range found in literature | Median value from literature1 |
|---|---|---|
| Total phosphorus (%) | 0.0061 - 1.086 | 0.0618 |
| Total nitrogen (%) | 1.2 - 2.4 | 0.88 |
| Total potassium (%) | 0.0079 - 1.367 | 0.181 |
| Total carbon (%) | 24.2 - 90.9 | 66 |
| Total hydrogen (%) | 0.67 - 4.3 | 2.8 |
| Total oxygen (%) | 2.69 - 28.7 | 16.3 |
| pH | 6.43 - 10.4 | 9.66 |
| Cation exchange capacity (cmol/kg) | 0.1 - 562 | 43.1 |
| Surface area (m2/g | 2.78 - 203 | 30.6 |
| Electrical conductivity (μs/cm) | 100 - 2221 | 231.5 |
| Pore volume (cm3/g) | 0.006 - 0.51 | 0.036 |
| Total calciium (%) | 0.0954 - 3.182 | 0.590 |
| Total magnesium (%) | 0.0297 - 0.2801 | 0.0587 |
| Total copper (%) | 0.0001 - 0.0078 | 0.00025 |
| Total zinc (%) | 0.0002 - 0.0152 | 0.00135 |
| Total aluminum (%) | 0.001 - 0.1929 | 0.0290 |
| Total iron (%) | 0.0009 - 0.2209 | 0.0333 |
| Total manganese (%) | 0.0001 - 0.1025 | 0.00145 |
| Total sulfur (%) | 0.01 - 0.44 | 0.05 |