Table 5: Results of the pseudo first and pseudo second-order models.

Pb (II) (5 ppm) Pb (II) (30 ppm)
Kinetic Model Parameters Correlation (R2) Parameters Correlation (R2)
Pseudo First Order k1 = 0.0086 min‒1 0.9530 k1 = 0.0096 min‒1 0.9038
Qe = 7.167 mg/g Qe = 24.675 mg/g
Pseudo Second Order k2 = 7.772x10‒3 g/mg.min 0.9997 k2 = 3.355x10‒3 g/mg.min 0.9998
Qe = 7.391 mg/g Qe = 25.189 mg/g
h1 = 0.4246 mg/g.min h2 = 2.1287 mg/g.min

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