Metal ions

Langmuir isotherm model

Freundlich isotherm model

q_m (mg/g)

b (dm³/mg)

R²

K_f

1/n

R₂

Cd²⁺

14.29

0.1077

0.996

3.25

0.334

0.952

Pb²⁺

26.32

0.5071

0.995

10.56

0.258

0.833

Fe²⁺

12.38

0.0622

0.993

1.58

0.456

0.947