Table 2 Experimental data for TH removal utilizing a 4-Variable BBD matrix.

From: Characterization optimization of synthesis Chitosanclay/benzoin/Fe3O4 composite for adsorption of Thionine dye by design expert study

Run

A: Adsorbent dose (g)

B: pH

C: Temperature (°C)

D: Time (min)

Thionine removal%

1

0.05

10

45

30

87.26

2

0.02

7

45

10

54.59

3

0.08

4

45

20

92.61

4

0.05

10

60

20

83.04

5

0.02

7

60

20

91.96

6

0.05

4

45

10

82.31

7

0.05

7

30

30

62.34

8

0.05

7

30

10

46.56

9

0.02

7

30

20

43.04

10

0.08

7

45

30

96.41

11

0.05

7

45

20

68.87

12

0.05

7

60

30

97.63

13

0.05

4

45

30

90.85

14

0.08

7

45

10

90.17

15

0.05

7

60

10

76.90

16

0.02

4

45

20

84.91

17

0.05

7

45

20

70.66

18

0.05

7

45

20

71.02

19

0.05

4

30

20

73.17

20

0.02

10

45

20

60.94

21

0.08

7

60

20

90.03

22

0.05

10

30

20

51.65

23

0.05

7

45

20

78.48

24

0.08

10

45

20

82.48

25

0.05

7

45

20

74.68

26

0.05

10

45

10

53.06

27

0.02

7

45

30

67.86

28

0.05

4

60

20

98.81

29

0.08

7

30

20

61.76