Research Article
Waste to Energy: Response Surface Methodology for Optimization of Biodiesel Production from Leather Fleshing Waste
Table 4
Analysis of variance (ANOVA) table for response surface quadratic model.
| Source | Sum of Squares | df | Mean Square | F value | P-value Prob > F | Significance |
| Model | 2492.56 | 9 | 276.95 | 5790.64 | < 0.0001 | Significant | A | 10.2 | 1 | 10.2 | 213.29 | < 0.0001 | | B | 0.48 | 1 | 0.48 | 10.12 | 0.0098 | | C | 10.61 | 1 | 10.61 | 221.82 | < 0.0001 | | AB | 20.8 | 1 | 20.8 | 434.92 | < 0.0001 | | AC | 7.03 | 1 | 7.03 | 147.01 | < 0.0001 | | BC | 2.31 | 1 | 2.31 | 48.32 | < 0.0001 | | A2 | 127.76 | 1 | 127.76 | 2671.19 | < 0.0001 | | B2 | 336.75 | 1 | 336.75 | 7040.95 | < 0.0001 | | C2 | 167.99 | 1 | 167.99 | 3512.5 | < 0.0001 | | Residual | 0.48 | 10 | 0.048 | | | | Lack of Fit | 0.036 | 5 | 7.24E-03 | 0.082 | 0.9921 | Not significant | Pure Error | 0.44 | 5 | 0.088 | | | | Cor Total | 2493.03 | 19 | | | | |
|
|