Film

q_e,th

(mg/cm²)

q_e,exp

(mg/cm²)

Pseudo-first order

Pseudo-second order

q_e,calc

(mg/cm²)

K (min⁻¹)

R²

q_e,calc

(mg/cm²)

K

R²

DR/CH new

Concentrated dye

CH

0.15

0.046

0.030

(7.46 ± 3.65) × 10⁻⁴

0.36

/

/

/

CH/EtOH 1d

0.16

0.025

0.019

(5.58 ± 1.99) × 10⁻⁴

0.48

0.007

17.36 ± 16.29

0.99

CH/EtOH 4d

0.16

0.018

0.014

(23.95 ± 3.13) × 10⁻⁴

0.85

/

/

/

Diluted dye

CH

0.016

0.010

0.011

(133 ± 10) × 10⁻⁴

0.94

0.013

0.90 ± 0.39

0.98

CH/EtOH 1d

0.016

0.016

0.015

(16.31 ± 0.74) × 10⁻⁴

0.97

0.009

1.06 ± 0.45

0.98

CH/EtOH 4d

0.017

0.016

0.015

(17.91 ± 0.85) × 10⁻⁴

0.97

0.010

0.22 ± 0.74

0.99

DR/CH std

Concentrated Dye

CH pH 12

0.15

0.081

0.081

(7.66 ± 0.28) × 10⁻⁴

0.98

0.04

(55.65 ± 51.85) × 10⁻²

0.95

CH/NaOH

0.15

0.017

0.012

(21.22 ± 4.99) × 10⁻⁴

0.64

0.01

13.98 ± 22.21

0.98

CH/EtOH

1d

0.15

0.043

0.029

(1.26 ± 0.11) × 10⁻²

0.94

0.05

(61.09 ± 33.03) × 10⁻²

0.99

CH/EtOH

4d

0.16

0.028

0.011

(10.02 ± 2.23) × 10⁻⁴

0.70

0.013

/

0.99

Diluted dye

CH pH 12

0.016

0.014

0.014

(28.32 ± 0.81) × 10⁻⁴

0.98

0.023

(8.27 ± 3.46) × 10⁻²

0.70

CH/NaOH

0.016

0.017

0.016

(20.12 ± 0.82) × 10⁻⁴

0.98

0.012

(54.86 ± 18.57) × 10⁻²

0.98

CH/EtOH 1d

0.016

0.012

0.113

(21.72 ± 2.44) × 10⁻⁵

0.86

0.01

2.31 ± 0.75

0.99

CH/EtOH

4d

0.016

0.011

0.007

(45.60 ± 9.04) × 10⁻⁴

0.70

0.009

5.24 ± 5.25

0.97