Film

qe,th

(mg/cm2)

qe,exp

(mg/cm2)

Pseudo-first order

Pseudo-second order

qe,calc

(mg/cm2)

K (min−1)

R2

qe,calc

(mg/cm2)

K

R2

DB/CH new

Concentrated dye

CH

0.16

0.074

0.089

(2.00 ± 0.1) × 10−2

0.97

0.21

(4.66 ± 1.08) × 10−2

0.99

CH/EtOH 1d

0.17

0.17

0.17

(8.00 ± 0.1) × 10−3

0.99

0.25

(2.04 ± 0.35) × 10−2

0.99

CH/EtOH 4d

0.17

0.17

0.18

(1.50 ± 0.03) × 10−2

0.99

0.22

(4.81 ± 1.42) × 10−2

0.99

Diluted dye

CH/EtOH 1d

0.017

0.017

0.016

(4.50 ± 0.2) × 10−3

0.99

0.021

(25.75 ± 7.23) × 10−2

0.99

CH/EtOH 4d

0.017

0.011

0.11

(5.00 ± 0.02) × 10−3

0.99

0.013

(58.36 ± 25.32) × 10−2

0.96

DB/CH std

Concentrated Dye

CH pH 12

0.18

0.16

0.15

(60.00 ± 0.09) × 10−3

0.99

0.19

(46.03 ± 8.96) × 10−3

1

CH/NaOH

0.17

0.17

0.15

(12.00 ± 0.02) × 10−2

0.99

0.20

(81.15 ± 20.11) × 10−3

1

CH/EtOH

1d

0.17

0.14

0.15

(8.00 ± 0.10) × 10−3

0.99

0.21

(27.56 ± 6.42) × 10−3

0.99

CH/EtOH

4d

0.17

0.16

0.18

(8.00 ± 0.1) × 10−3

0.99

0.41

(4.90 ± 1.64) × 10−3

0.85

Diluted dye

CH pH 12

0.018

0.019

0.019

(2.00 ± 0.04) × 10−2

0.99

0.025

(61.84 ± 13.94) × 10−2

1

CH/NaOH

0.017

0.018

0.021

(2.00 ± 0.04) × 10−2

0.99

0.026

(34.60 ± 13.96) × 10−2

0.98

CH/EtOH 1d

0.017

0.0056

0.004

(9.00 ± 0.50) × 10−3

0.97

0.006

4.01 ± 1.93

0.99

CH/EtOH

4d

0.017

0.014

0.018

(2.00 ± 0.10) × 10−2

0.98

0.03

7.69 ± 2.96

0.92