FA

Sample

Heavy

metals

L/S

Langmuir Isotherm

Freundlich Isotherm

Q

b

R²

R_L

K_f

n

R²

S

Pb

0.5

1.89

0.28

0.73

0.07

9.48

0.62

0.90

1.5

0.91

11.43

0.70

0.08

34.88

0.43

0.91

R

Pb

0.5

11.75

1.64

0.09

0.01

2.75

1.61

0.69

1.5

7.37

0.88

0.38

0.01

3.16

1.72

0.84