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Table 5 Experimental design matrix and the resulting yield

From: Response surface optimization of biodiesel yield from pre-treated waste oil of rendered pork from a food processing industry

Run

Methanol/oil ratio (mol)

Catalyst load (wt%)

Reaction time (min)

Yield (%)

1

4

0.75

60

94.48

2

4

0.75

60

92.37

3

5

0.55

45

91.88

4

3

0.55

45

95.52

5

4

0.75

60

93.13

6

4

0.75

60

93.68

7

4

0.75

60

94.47

8

5

0.95

75

88.74

9

5

0.55

75

94.64

10

6

0.75

60

88.26

11

2

0.75

60

93.97

12

3

0.95

45

93.41

13

5

0.95

45

88.78

14

3

0.95

75

89.12

15

4

1.15

60

87.23

16

4

0.75

30

93.74

17

4

0.35

60

96.17

18

4

0.75

60

93.92

19

3

0.55

75

95.27

20

4

0.75

90

92.69