Table 5 Langmuir, Freundlich, Temkin and Dubinin–Radushkevich (D–R) isotherm parameters for adsorption of BB dye onto BL-CNSs.

From: Toward pulping process for enhancing the RS-black liquors as precursor of activated carbons for aqueous adsorbent purposes

  

BL1-CNSS

BL2-CNSS

BL3-CNSS

BL4-CNSS

BL5-CNSS

BL6-CNSS

BL7-CNSS

BL8-CNSS

BL9-CNSS

Langmiur isotherm

Qm, mg g−1

24.558

32.000

31.756

2.441

34.990

35.817

70.522

2.506

40.733

b, L mg−1

0.009

0.002

0.009

0.069

0.004

0.024

0.060

0.146

0.149

R2

0.515

0.382

0.977

0.500

0.764

0.845

0.976

0.002

0.989

RL, mg L−1

0.154

0.469

0.150

0.024

0.293

0.065

0.027

0.011

0.011

Freundlich isotherm

N

1.636

0.780

0.583

1.171

1.017

1.547

1.275

0.735

2.370

KF, mg g−1

1.511

70.909

150.557

4.159

9.183

1.280

3.112

7.698

5.303

R2

0.914

0.930

0.956

0.975

0.949

0.917

0.791

0.917

0.216

Temkin isotherm

B, J.mol−1

0.646

0.944

0.351

0.492

0.575

0.381

0.157

0.156

0.345

KT, L.mg−1

5.028

12.529

12.055

8.294

9.550

3.028

1.750

7.921

1.994

R2

0.769

0.887

0.951

0.834

0.916

0.791

0.969

0.986

0.372

D–R isotherm

Β, mol2 KJ−2

1.0E−05

5.0E−05

7.0E−05

2.0E−05

3.0E−05

4.0E−06

3.0E−06

4.0E−05

4.0E−06

Qm, mg g−1

8.654

4.135

10.574

8.625

7.587

11.603

42.730

31.507

26.846

ED-R, KJ mol−1

0.224

0.100

0.085

0.158

0.129

0.354

0.408

0.112

0.354

R2

0.765

0.891

0.886

0.770

0.855

0.133

0.953

0.967

0.150

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