Table 10 Optimization solutions obtained from design expert.
From: Valorization of marble sludge waste in biodiesel production using a central composite design
Number | Time, (h) | Temperature, (℃) | Methanol/oil molar ratio | Catalyst, (%) | Yield, (%) | Desirability | |
|---|---|---|---|---|---|---|---|
1 | 1 | 57.093 | 20 | 5 | 93.566 | 0.866 | Selected |
2 | 1 | 56.878 | 19.999 | 5 | 93.409 | 0.866 | |
3 | 1 | 56.736 | 20 | 5 | 93.304 | 0.866 | |
4 | 1 | 57.386 | 20 | 4.997 | 93.774 | 0.866 | |
5 | 1 | 56.662 | 20 | 5 | 93.249 | 0.866 | |
6 | 1 | 56.546 | 20 | 5 | 93.162 | 0.866 | |
7 | 1 | 57.008 | 19.962 | 5 | 93.485 | 0.866 | |
8 | 1 | 57.125 | 19.947 | 5 | 93.563 | 0.866 | |
9 | 1 | 57.787 | 20 | 5 | 94.062 | 0.866 | |
10 | 1 | 58.022 | 20 | 5 | 94.226 | 0.866 | |
11 | 1 | 56.997 | 19.874 | 5 | 93.433 | 0.865 | |
12 | 1 | 57.269 | 19.902 | 4.989 | 93.631 | 0.865 |
