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Table 10 Optimal solutions of numerical optimization model

From: Factorial design study of total petroleum contaminated soil treatment using land farming technique

Number

pH

Moisture content

Mass of substrate

Turning rate

TPH

Desirability

 

1

6.01

10.00

1.00

5.00

635.907

0.986

Selected

2

6.00

17.44

1.00

4.99

650.986

0.985

 

3

6.00

23.73

1.00

5.00

660.319

0.984

 

4

6.00

24.32

1.00

5.00

661.415

0.984

 

5

6.00

28.81

1.00

5.00

669.695

0.984

 

6

6.00

30.84

1.00

5.00

672.851

0.983

 

7

6.00

32.26

1.00

5.00

675.421

0.983

 

8

6.00

31.47

1.00

4.98

677.410

0.983

 

9

6.00

10.00

0.96

4.91

679.292

0.983

 

10

6.00

37.28

1.00

5.00

684.185

0.982

 

11

6.00

40.14

1.00

5.00

689.686

0.982

 

12

6.00

39.45

0.99

5.00

676.788

0.982

 

13

6.00

33.53

1.00

5.00

698.162

0.981

 

14

6.00

45.15

1.00

5.00

704.886

0.981

 

15

6.00

34.21

1.00

4.84

707.500

0.981

 

16

6.00

41.29

0.93

5.00

716.346

0.980

 

17

6.00

21.70

0.88

5.00

720.118

0.979

 

18

6.00

10.00

0.87

5.00

734.523

0.979

 

19

6.00

24.54

0.84

5.00

735.764

0.978

 

20

6.00

50.00

0.77

5.00

736.972

0.978