Depth (cm)

Column (C)

Heavy Metals (ppm)

Removal%

Heavy Metals

Pb

Zn

Cr

Pb

Zn

Cr

Statistical Analysis

Pb

Zn

Cr

20

7.31

50

5.69

25.51

25.13

25.54

Med

4.51

31.5

4.11

40

4.38

33

4.14

15.31

16.58

18.60

Mean

4.77

33.16

3.71

60

4.63

46

2.22

16.18

23.12

9.97

SD

1.44

12.7

1.63

80

4.31

19

1.34

15.06

9.55

6.04

Max

7.31

50

5.69

100

5.06

21

4.08

17.71

10.55

18.32

Min

2.92

19

1.34

120

2.92

30

4.80

10.23

15.08

21.54