Research Article
Optimization by Response Surface Methodology of Biodiesel Production from Podocarpus falcatus Oil as a Cameroonian Novel Nonedible Feedstock
Table 2
Experimental matrix and theoretical experiments and responses.
| | Test | Temperature (°C)
() | Time (min)
() | Molar ratio
() | Viscosity (mm2/s) | Yield (%) | | | | |
| | 1 | 65.0 | 60.0 | 10.0 | 3.84 | 3.945 | 83.6 | 83.9725 | | 2 | 65.0 | 120.0 | 8.0 | 4 | 4.12 | 96.1 | 95.2533 | | 3 | 65.0 | 180.0 | 10.0 | 3.84 | 3.715 | 94.3 | 93.7875 | | 4 | 65.0 | 180.0 | 6.0 | 4.64 | 4.765 | 87.12 | 86.7475 | | 5 | 80.0 | 120.0 | 10.0 | 4.10 | 4.02 | 88.66 | 89.7725 | | 6 | 65.0 | 120.0 | 8.0 | 4.08 | 4.12 | 95.40 | 95.2533 | | 7 | 80.0 | 60.0 | 8.0 | 4.08 | 4.285 | 93.46 | 91.975 | | 8 | 80.0 | 180.0 | 8.0 | 4.74 | 4.715 | 87.9 | 87.3 | | 9 | 50.0 | 60.0 | 8.0 | 4.42 | 4.445 | 85.86 | 86.46 | | 10 | 50.0 | 120.0 | 10.0 | 3.58 | 3.68 | 94.72 | 92.7475 | | 11 | 80.0 | 120.0 | 6.0 | 5.54 | 5.54 | 91.22 | 92.1925 | | 12 | 65.0 | 60.0 | 6.0 | 5.64 | 5.54 | 90.88 | 91.3925 | | 13 | 50.0 | 120.0 | 6.0 | 4.72 | 4.8 | 92.82 | 91.7075 | | 14 | 50.0 | 180.0 | 8.0 | 3.78 | 3.575 | 94.82 | 96.305 | | 15 | 65.0 | 120.0 | 8.0 | 4.28 | 4.12 | 94.26 | 95.2533 |
|
|
: reaction temperature; : reaction time; alcohol/oil molar ratio; : experimental viscosity; : theoretical viscosity; : experimental yield; : theoretical yield. |
