Open Access
Table 3
Experimental design results for transesterification of waste cooking.
| Run | Ethanol–oil molar ratio (x1) | KOH concentration (x2) | Stirring speed (x3) | Experimental biodiesel yield (Yexp) | Predicted biodiesel yield (Ypred) |
|---|---|---|---|---|---|
| 1 | 6 | 1 | 200 | 71.00 | 70.42 |
| 2 | 18 | 1 | 200 | 82.05 | 82.36 |
| 3 | 6 | 3 | 200 | 69.20 | 69.51 |
| 4 | 18 | 3 | 200 | 60.10 | 60.67 |
| 5 | 6 | 1 | 400 | 65.00 | 64.33 |
| 6 | 18 | 1 | 400 | 70.50 | 70.09 |
| 7 | 6 | 3 | 400 | 76.20 | 75.79 |
| 8 | 18 | 3 | 400 | 60.30 | 60.78 |
| 9 | 6 | 2 | 300 | 74.77 | 76.10 |
| 10 | 18 | 2 | 300 | 75.55 | 74.57 |
| 11 | 12 | 1 | 300 | 76.00 | 77.83 |
| 12 | 12 | 3 | 300 | 73.70 | 72.72 |
| 13 | 12 | 2 | 200 | 88.50 | 87.87 |
| 14 | 12 | 2 | 400 | 83.90 | 84.88 |
| 15 | 12 | 2 | 300 | 84.00 | 83.87 |
| 16 | 12 | 2 | 300 | 84.03 | 83.87 |
| 17 | 12 | 2 | 300 | 83.98 | 83.87 |
| 18 | 12 | 2 | 300 | 84.00 | 83.87 |
| 19 | 12 | 2 | 300 | 84.01 | 83.87 |
| 20 | 12 | 2 | 300 | 83.98 | 83.87 |
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