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Table 4 CCD matrix for the biodiesel production from CIO-WCO mixture

From: Process optimization of Calophyllum inophyllum-waste cooking oil mixture for biodiesel production using Donax deltoides shells as heterogeneous catalyst

Run A: Catalyst concentration B: Methanol to oil ratio C: Reaction time Experimental biodiesel conversion Predicted biodiesel conversion
wt% % (v/v) min % %
1 4.64 72 150 38.8 39.5
2 8 72 150 76.7 76.5
3 6 82 180 67.0 68.8
4 11.36 72 150 29.1 28.1
5 10 62 180 48.2 51.2
6 10 82 180 59.1 56.4
7 6 82 120 49.1 46.3
8 8 72 99.6 83.0 82.2
9 10 62 120 95.0 93.4
10 8 55.18 150 95.1 94.3
11 6 62 120 91.6 94.5
12 8 72 150 76.7 76.5
13 10 82 120 23.9 27.0
14 8 72 150 76.7 76.5
15 8 72 150 76.2 76.5
16 8 72 150 75.8 76.5
17 8 88.82 150 57.7 58.1
18 8 72 150 76.5 76.5
19 8 72 200.5 65.0 65.6
20 6 62 180 48.2 45.3