Metal

Equation

q_e.cal (mg/g)

q_e.exp (mg/g)

K₂ (min⁻¹)

R²

Pb(II)

$\frac{t}{q_t}=2.1068t+0.0687$

0.475

0.474

64.6085

1

Cu(II)

$\frac{t}{q_t}=2.5315t+0.487$

0.395

0.495

4.5933

1