Research Article
Optimization Study in Biodiesel Production via Response Surface Methodology Using Dolomite as a Heterogeneous Catalyst
Table 3
Central composite design arrangement and results for transesterification of soybean oil using dolomite calcined at 800°C and a reaction time of 4 h.
| Run | Independent variables | FAME yield (wt%) | (°C) | | (wt%) |
| 1 | 55 | 6 | 0.6 | 85.5 | 2 | 65 | 6 | 0.6 | 89.9 | 3 | 55 | 15 | 0.6 | 93.6 | 4 | 65 | 15 | 0.6 | 96.1 | 5 | 55 | 6 | 2.0 | 92.6 | 6 | 65 | 6 | 2.0 | 91.6 | 7 | 55 | 15 | 2.0 | 93.2 | 8 | 65 | 15 | 2.0 | 94.3 | 9 | 60 | 10.5 | 0.6 | 93.7 | 10 | 60 | 10.5 | 2.0 | 95.0 | 11 | 60 | 15 | 1.3 | 94.4 | 12 | 60 | 6 | 1.3 | 89.3 | 13 | 65 | 10.5 | 1.3 | 94.6 | 14 | 55 | 10.5 | 1.3 | 95.6 | 15 | 60 | 10.5 | 1.3 | 97.3 | 16 | 60 | 10.5 | 1.3 | 96.5 | 17 | 60 | 10.5 | 1.3 | 97.1 |
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