Research Article
Saponification of Jatropha curcas Seed Oil: Optimization by D-Optimal Design
Table 2
D-optimal design optimization of J. curcas seed oil saponification and response for FFA%.
| Run | Coded independent variable levels | Response | no. | Ethanolic KOH (M, ) | Temperature (°C, ) | Time (h, ) | FFA (%, ) |
| 1 | 2.00 | 50 | 1.5 | 97.1 | 2 | 2.00 | 70 | 2.5 | 102.4 | 3 | 1.00 | 50 | 1.5 | 53.9 | 4 | 1.00 | 60 | 2.0 | 64.6 | 5 | 2.00 | 50 | 2.5 | 97.5 | 6 | 1.75 | 65 | 2.0 | 102.2 | 7 | 2.00 | 50 | 2.5 | 99.1 | 8 | 1.00 | 50 | 2.5 | 60.8 | 9 | 1.00 | 70 | 2.5 | 77.1 | 10 | 1.50 | 60 | 2.5 | 97.4 | 11 | 1.00 | 50 | 2.5 | 67.9 | 12 | 2.00 | 60 | 1.5 | 100.3 | 13 | 1.00 | 50 | 1.5 | 55.1 | 14 | 1.00 | 70 | 1.5 | 70.0 | 15 | 1.50 | 50 | 2.0 | 96.72 | 16 | 2.00 | 70 | 1.5 | 100.4 | 17 | 1.00 | 70 | 2.5 | 72.4 | 18 | 1.50 | 70 | 1.5 | 99.2 |
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