Table 2.
Single factor analysis table of Supercritical CO2 Fluid Extraction process.
| Experimental conditions | N | Mean ± SD | F-value | P-value |
|---|---|---|---|---|
| Extraction pressure (MPa) | ||||
| 17 | 3 | 8.85 ± 2.14 | 29.490 | < 0.001 |
| 24 | 3 | 23.24 ± 4.75 | ||
| 31 | 3 | 49.89 ± 10.26 | ||
| Extraction temperature (℃) | ||||
| 50 | 3 | 53.50 ± 4.41 | 6.395 | 0.033 |
| 60 | 3 | 63.86 ± 5.36 | ||
| 70 | 3 | 67.65 ± 5.23 | ||
| Extraction time (min) | ||||
| 60 | 3 | 25.14 ± 4.34 | 22.030 | 0.002 |
| 120 | 3 | 54.89 ± 10.06 | ||
| 180 | 3 | 58.62 ± 4.18 | ||
| Alkalization time (min) | ||||
| 3 | 3 | 80.23 ± 14.27 | 0.357 | 0.714 |
| 5 | 3 | 74.63 ± 5.20 | ||
| 8 | 3 | 86.35 ± 25.21 | ||
| Crushing time (min) | ||||
| 1 | 3 | 30.19 ± 8.83 | 1.447 | 0.307 |
| 2 | 3 | 36.18 ± 6.67 | ||
| 3 | 3 | 42.79 ± 11.16 | ||
| Carrier concentration (%) | ||||
| 20 | 3 | 36.95 ± 5.45 | 0.318 | 0.739 |
| 50 | 3 | 38.90 ± 9.29 | ||
| 80 | 3 | 34.57 ± 4.55 | ||