Table 2. Kinetic values calculated according to the pseudo-first order, pseudo-second order and intra-particle diffusion kinetic models.

Parameters

Experimental
value

Pseudo-first
order

Pseudo-second
order

Intra-particle
diffusion

T
  (ºC) 

Concentration
(mM)

 pH 

q_e
(mol g^-1)

q_e
  (mol g^-1)  

k₁
 (g mol^-1 s^-1) 

R²

q_e
(mol g^-1)

k₂
(g mol^-1 s^-1)

R²

k_id1

R²

k_id2

R²

40

1.0

6.0

1.65 x 10^-4

1.04x10^-4

1.15x10^-3

 0.9515 

1.68x10^-4

35.3

 0.9927 

2.0x10^-6

 0.9553 

1.0x10^-6

 0.9898 

40

1.5

6.0

2.24 x 10^-4

1.97 x 10^-4

1.15 x 10^-3

0.9581

 2.28 x 10^-4 

34.6

0.9976

 4.0 x 10^-6 

0.9820

 8.0 x 10^-7 

0,9862

40

2.0

6.0

2.67 x 10^-4

1.39 x 10^-4

9.21 x 10^-4

0.9341

2,69 x 10^-4

25.6

0.9953

4.0 x 10^-6

0.9865

2.0 x 10^-6

0,9964

40

2.5

6.0

3.06 x 10^-4

2.34 x 10^-4

1.61 x 10^-3

0.9324

3.13 x 10^-4

30.7

0.9987

6.0 x 10^-6

0.9637

1.0 x 10^-6

0.9190

40

3.0

6.0

3.19 x 10^-4

1.89 x 10^-4

1.15 x 10^-3

0.9012

3.25 x 10^-4

30.0

0.9987

6.0 x 10^-6

0.9743

1.0 x 10^-6

0.9311

30

2.0

6.0

2.57 x 10^-4

1.52 x 10^-4

9.21 x 10^-4

0.9512

2,61 x 10^-4

21.8

0.9927

3.0 x 10^-6

0.9499

2.0 x 10^-6

0.9467

20

2.0

6.0

2.51 x 10^-4

1.74 x 10^-4

1.15 x 10^-3

0.9798

2,59 x 10^-4

17.2

0.9912

4.0 x 10^-6

0.9779

2.0 x 10^-6

0.9786