Table 6 Actual and predicted yield of biodiesel at different conditions.
From: Valorization of marble sludge waste in biodiesel production using a central composite design
Run # | A Reaction time (h) | B Reaction temperature (℃) | C Methanol-to-oil molar ratio (M/O) | D Catalyst concentration (wt%) | Biodiesel yield Actual % | Biodiesel yield Predicted % |
|---|---|---|---|---|---|---|
1 | 1 | 50 | 20 | 1 | 82.5 | 84.02 |
2 | 1 | 70 | 20 | 1 | 94.6 | 92.10 |
3 | 2.5 | 60 | 12.5 | 3 | 93.8 | 92.32 |
4 | 4 | 50 | 5 | 1 | 86 | 84.64 |
5 | 0.5 | 60 | 12.5 | 3 | 81.2 | 80.53 |
6 | 2.5 | 60 | 12.5 | 3 | 92.5 | 92.32 |
7 | 4 | 70 | 20 | 1 | 94.5 | 96.04 |
8 | 2.5 | 60 | 12.5 | 3 | 90.8 | 92.32 |
9 | 2.5 | 80 | 12.5 | 3 | 94.9 | 94.40 |
10 | 4 | 70 | 5 | 5 | 92 | 91.80 |
11 | 1 | 70 | 5 | 1 | 79.9 | 81.97 |
12 | 2.5 | 40 | 12.5 | 3 | 73 | 74.50 |
13 | 4 | 70 | 5 | 1 | 93 | 92.26 |
14 | 1 | 70 | 20 | 5 | 97 | 99.69 |
15 | 5.5 | 60 | 12.5 | 3 | 90.5 | 92.17 |
16 | 4 | 70 | 20 | 5 | 97.9 | 96.13 |
17 | 4 | 50 | 20 | 1 | 94.1 | 92.86 |
18 | 1 | 50 | 20 | 5 | 89 | 87.41 |
19 | 4 | 50 | 5 | 5 | 79.8 | 79.98 |
20 | 2.5 | 60 | 12.5 | 3 | 92.8 | 92.32 |
21 | 4 | 50 | 20 | 5 | 89.5 | 88.75 |
22 | 1 | 50 | 5 | 1 | 70 | 69.45 |
23 | 2.5 | 60 | 12.5 | 0.5 | 91 | 91.13 |
24 | 2.5 | 60 | 12.5 | 7 | 93.2 | 94.07 |
25 | 1 | 50 | 5 | 5 | 72.5 | 72.29 |
26 | 2.5 | 60 | 12.5 | 3 | 91.2 | 92.32 |
27 | 2.5 | 60 | 27.5 | 3 | 95.1 | 95.65 |
28 | 2.5 | 60 | 5 | 3 | 76.3 | 76.75 |
29 | 1 | 70 | 5 | 5 | 90.1 | 89.01 |
30 | 2.5 | 60 | 12.5 | 3 | 92.8 | 92.32 |
