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Table 3 Langmuir and Freundlich models of ACG2 adsorption isotherms on BC and Fe3O4@BC at different temperatures

From: Preparation and characterization of an algal-based magnetic biochar nanocomposite for the removal of azocarmine G2 dye from aqueous solutions

Adsorbent

 

Langmuir model

Freundlich model

T (K)

qm (mg/g)

b (L/mg)

RL

R2

Kf [(mgg−1) (Lmg−1)1/n]

nf

R2

BC

298

28.57

0.0483

0.175

0.979

0.4074

1.7921

0.95

 

308

30.30

0.0498

0.170

0.954

0.4009

1.7301

0.919

 

318

30.30

0.0678

0.131

0.973

0.2917

1.9194

0.946

 

328

29.41

0.0840

0.109

0.973

0.2624

1.9920

0.907

Fe3O4@BC

298

71.4

0.0700

0.1275

0.986

0.1786

1.425

0.998

 

308

66.7

0.1049

0.0888

0.996

0.1419

1.435

0.988

 

318

76.9

0.1048

0.0889

0.981

0.1291

1.348

0.984

 

328

83.3

0.1188

0.0792

0.978

0.1205

1.233

0.974

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BMC Chemistry

ISSN: 2661-801X

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