Table 3 The Box-Behnken design matrixes employed for Chara vulgaris biodiesel
Run no. | Chloroform (X1) (ml) | NaCl (X2) (%) | Temperature (X3) (°C) | Lipid extract before transesterification (ml) | Calorific value (c) (kcal/kg) | Yield (y) (ml) |
|---|---|---|---|---|---|---|
1 | 118.8 | 0.70 | 60 | 14 | 9167.173 | 3.0 |
2 | 198 | 0.70 | 60 | 18 | 9153.926 | 3.4 |
3 | 118.8 | 0.80 | 60 | 13 | 9108.31 | 2.9 |
4 | 198 | 0.80 | 60 | 19 | 9219.738 | 3.4 |
5 | 118.8 | 0.75 | 55 | 15 | 9188.192 | 3.1 |
6 | 198 | 0.75 | 55 | 20 | 9242.961 | 3.6 |
7 | 118.8 | 0.75 | 65 | 14 | 9132.539 | 3.0 |
8 | 198 | 0.75 | 65 | 19 | 9255.106 | 3.5 |
9 | 158.4 | 0.70 | 55 | 17 | 9158.281 | 3.2 |
10 | 158.4 | 0.80 | 55 | 16 | 9151.03 | 3.1 |
11 | 158.4 | 0.70 | 65 | 17 | 9143.935 | 3.2 |
12 | 158.4 | 0.80 | 65 | 17 | 9174.205 | 3.2 |
13 | 158.4 | 0.75 | 60 | 18 | 9169.471 | 3.3 |
14 | 158.4 | 0.75 | 60 | 18 | 9169.471 | 3.3 |
15 | 158.4 | 0.75 | 60 | 18 | 9169.471 | 3.3 |