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Table 4
Results of the energetic analysis of the samples studied and of three classic references.
| Sample description | Gravimetric humidity (%) | Water content (mg/kg) | Ashes (%) | Higher calorific value (MJ/kg) | Lower calorific value (MJ/kg) |
|---|---|---|---|---|---|
| Moringa seeds | 7.34 | – | 5.61 | 22.93 | 21.14 |
| Seed husks | 10.86 | – | 3.86 | 18.52 | 15.87 |
| Oleaginous grains | 5.12 | – | 4.39 | 26.06 | 25.93 |
| Oil of grains by pressing | 0.09* | 876.6 | 0.05 | 39.68 | 36.88 |
| Oil of grains by solvent extraction | 0.06* | 632.0 | 0.05 | 40.03 | 36.91 |
| Cake of the grain pressed | 6.14 | – | 4.17 | 24.81 | 23.31 |
| Cake of the grain by solvent extraction | 5.83 | – | 3.96 | 19.79 | 18.49 |
| Mixed purified oil | 0.06* | 630.2 | 0.007 | 39.42 | 37.13 |
| Methyl biodiesel of the oil | 0.06* | 615.8 | 0.01 | 39.94 | 37.53 |
| Dry firewood on the air** | 30.5 | – | 0.54 | – | 12.3 |
| Sugarcane bagasse** | 50 | – | 11.27 | – | 8.4 |
| Coconut husks** | 8 | – | 8.25 | – | 16.7 |
*Calculated based on the water content result obtained by the Karl Fischer method shown in this table; **data extracted from Nogueira and Lora (2003). Source: Pereira (2015); Pereira et al. (2015).
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