Research Article
Optimization of Sunflower Oil Transesterification Process Using Sodium Methoxide
Table 2
Trial and predicted values for response variables of the reduced model.
| Treatment run | Blocks | Methyl esters contenta (, w/w%) | Experimental value () | Predicted value () | |
| 1 | 2 | 96.46 | 96.64 |
−0.18
| 2 | 2 | 95.40 | 95.46 |
−0.06
| 3 | 2 | 97.32 | 97.61 |
−0.29
| 4 | 2 | 96.20 | 96.64 |
−0.44
| 5 | 2 | 99.20 | 99.21 |
−0.01
| 6 | 2 | 98.46 | 97.46 | 0.99 | 7 | 1 | 96.95 | 97.47 |
−0.52
| 8 | 1 | 98.14 | 98.08 | 0.05 | 9 | 1 | 97.00 | 96.49 | 0.51 | 10 | 1 | 99.20 | 98.23 | 0.96 | 11 | 1 | 96.80 | 97.47 |
−0.67
| 12 | 1 | 99.90 | 100.23 |
−0.33
| 13 | 3 | 96.64 | 96.99 |
−0.35
| 14 | 3 | 96.10 | 95.04 | 1.05 | 15 | 3 | 96.29 | 96.63 |
−0.34
| 16 | 3 | 96.99 | 97.31 |
−0.32
| 17 | 3 | 96.72 | 96.51 | 0.20 | 18 | 3 | 92.40 | 93.45 |
−1.05
| 19 | 3 | 93.54 | 93.57 |
−0.03
| 20 | 3 | 95.90 | 95.04 | 0.85 | Opt. Point | — | 99.70 | 100.04 |
−0.34
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aNo considerable differences () between trial () and predicted values ();
b: residual.
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