Table 1.
Ultimate and proximate analysis of pellet samples.
| Sample | Carbon [%] | Ash – carbon [%] | Hydrogen [%] | Nitrogen [%] | Sulphur [%] | Moisture [%] | Volatile matter dry [%] | Fixed carbon dry [%] | Ash dry [%] | LCV [MJ/kg] |
|---|---|---|---|---|---|---|---|---|---|---|
| Spruce 100 | 47.34 ±0.59 |
25.84 ±1.36 |
6.30 ±0.09 |
0.00 ±0.00 |
0.04 ±0.04 |
5.66 ±0.12 |
82.02 ±0.09 |
17.43 ±0.12 |
0.55 ±0.02 |
17.59 ±0.08 |
| Spruce 95 | 49.77 ±0.27 |
16.94 ±2.29 |
6.14 ±0.04 |
0.03 ±0.04 |
4.63 ±0.05 |
82.14 ±0.08 |
17.14 ±0.09 |
0.73 ±0.02 |
18.97 ±0.17 |
|
| Spruce 90 | 51.37 ±0.24 |
10.16 ±0.12 |
6.68 ±0.04 |
0.03 ±0.04 |
4.10 ±0.04 |
83.28 ±0.22 |
15.83 ±0.17 |
0.89 ±0.05 |
19.95 ±0.14 |
|
| Beech 100 | 45.90 ±0.25 |
7.07 ±0.25 |
6.93 ±0.02 |
0.05 ±0.00 |
5.25 ±0.05 |
81.77 ±0.14 |
16.64 ±0.14 |
1.60 ±0.01 |
16.86 ±0.18 |
|
| Beech 95 | 48.87 ±0.04 |
6.57 ±0.18 |
6.64 ±0.03 |
0.01 ±0.01 |
4.78 ±0.05 |
83.19 ±0.13 |
15.81 ±0.12 |
1.00 ±0.01 |
18.15 ±0.06 |
|
| Beech 90 | 50.97 ±0.28 |
7.69 ±0.08 |
7.04 ±0.07 |
0.05 ±0.01 |
4.60 ±0.02 |
84.06 ±0.10 |
14.84 ±0.12 |
1.10 ±0.02 |
19.78 ±0.09 |
More detailed analysis of the energy assessment of COVID-19 medical waste as a potential fuel was realized in previous research [20]. All pellet samples were combusted in a small heat source USPOR 18 AUTOMAT with a retort burner.