Initial dye concentration

(mg/L)

qeexp

(mg/g)

Pseudo-first-order kinetic model

Pseudo-second-order kinetic model

qe cal.

K1

R2

qecal.

K2

R2

20

18.2

3.1

0.015

0.9013

18.4

0.012

0.9996

40

37.8

5.5

0.024

0.927

38.46

0.009

0.9999

60

57.75

11.3

0.026

0.9311

59.17

0.0042

0.9998

80

77.6

26.014

0.033

0.9805

80.65

0.0023

0.9997

100

98.55

86.34

0.044

0.9639

103.1

0.00126

0.9998