No.

Dosage

Contact time

Temperature

pH

Phenol removal efficiency (%)

1

1

1

1

1

18.17

2

1

2

2

2

15.56

3

1

3

3

3

2.63

4

1

4

4

4

36.56

5

1

5

5

5

6.00

6

2

1

2

3

17.34

7

2

2

3

4

7.72

8

2

3

4

5

36.76

9

2

4

5

1

4.96

10

2

5

1

2

40.50

11

3

1

3

5

7.92

12

3

2

4

1

38.14

13

3

3

5

2

8.30

14

3

4

1

3

38.92

15

3

5

2

4

24.78

16

4

1

4

2

45.40

17

4

2

5

3

11.64

18

4

3

1

4

32.64

19

4

4

2

5

32.24

20

4

5

3

1

18.32

21

5

1

5

4

15.56

22

5

2

1

5

25.38

23

5

3

2

1

39.12

24

5

4

3

2

18.32

25

5

5

4

3

45.40

K1

15.78

20.88

31.12

23.74

_

K2

21.45

19.69

25.81

25.62

K3

23.61

23.90

10.98

23.19

K4

28.05

26.20

40.45

23.45

K5

28.76

27.00

9.29

21.66

Range (R)

12.98

7.31

31.16

3.96