Research Article
Optimization of Oil Yield from the Macro Algae Spirogyra by Solvent Extraction Process Using RSM and ANN
| Source | SS | Df | MS | F value | value | |
| Model | 199.75 | 20 | 9.99 | 62.85 | < 0.0001 | Significant | | 8.19 | 1 | 8.19 | 51.53 | < 0.0001 | | | 1.38 | 1 | 1.38 | 8.68 | 0.0063 | | | 39.30 | 1 | 39.30 | 247.30 | < 0.0001 | | | 8.76 | 1 | 8.76 | 55.13 | < 0.0001 | | | 16.92 | 1 | 16.92 | 106.47 | < 0.0001 | | θ1θ2 | 0.0018 | 1 | 0.0018 | 0.0111 | 0.9169 | | θ1θ3 | 0.1504 | 1 | 0.1504 | 0.9462 | 0.3387 | | θ1θ4 | 0.0358 | 1 | 0.0358 | 0.2255 | 0.6385 | | θ1θ5 | 0.3365 | 1 | 0.3365 | 2.12 | 0.1563 | | θ2θ3 | 0.0351 | 1 | 0.0351 | 0.2206 | 0.6421 | | θ2θ4 | 0.0006 | 1 | 0.0006 | 0.0035 | 0.9533 | | θ2θ5 | 0.1349 | 1 | 0.1349 | 0.8490 | 0.3644 | | θ3θ4 | 0.6062 | 1 | 0.6062 | 3.81 | 0.0605 | | θ3θ5 | 1.47 | 1 | 1.47 | 9.22 | 0.0050 | | θ4θ5 | 0.0053 | 1 | 0.0053 | 0.0332 | 0.8567 | | θ12 | 6.27 | 1 | 6.27 | 39.44 | < 0.0001 | | θ22 | 0.0300 | 1 | 0.0300 | 0.1888 | 0.6671 | | θ32 | 0.0411 | 1 | 0.0411 | 0.2585 | 0.6150 | | θ42 | 0.0459 | 1 | 0.0459 | 0.2887 | 0.5952 | | θ52 | 8.20 | 1 | 8.20 | 51.58 | < 0.0001 | | Residual | 4.61 | 29 | 0.1589 | | | | Lack of fit | 3.75 | 22 | 0.1704 | 1.39 | 0.3440 | Not significant | Pure error | 0.8595 | 7 | 0.1228 | | | | Cor total | 204.36 | 49 | | | | | R2 | 0.9854 | | Adj R2 | 0.9752 | | | C. V % | 1.76 | | | | | |
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