| Sample | Gross calorific value, MJ/kg |
| Lignosorb + crude oil | 38.8 |
| Lignosorb + diesel fuel | 32.3 |
| Llignosorb + industrial oil | 32.1 |
| Lignosorb | 22.7 |
| Brown coal | 10.5 |
| Black coal | 20.9 |
| Anthracite | 26.8 |