First-order kinetic model

Second-order kinetic model

[CV]0

(mg/L)

qe, exp (mg/g)

qe, cal (mg/g)

k1

(min−1)

R2

qe, cal (mg/g)

k2

(g/mg∙min−1)

R2

40

20.060

5.370

0.035

0.807

20.41

0.040

0.999

50

23.417

4.498

0.025

0.974

23.81

0.025

0.999

70

30.671

11.117

0.012

0.947

28.57

0.010

0.997

90

36.922

10.188

0.009

0.934

32.26

0.011

0.998

100

51.502

0.012

0.012

0.988

50.00

0.010

0.998