Table 2 The parameters of Langmuir, Freundlich, and Redlich-Peterson models for the adsorption of Cr(VI) onto CS/MGO composites.

From: Fabrication of chitosan/magnetite-graphene oxide composites as a novel bioadsorbent for adsorption and detoxification of Cr(VI) from aqueous solution

Temperature (K)

Langmuir isotherm

Freundlich isotherm

Redlich-Peterson model

qmax (mg/g)

KL (L/mg)

R2

KF

n

R2

KRP (L/g)

aRP L/mg

β

R2

278

129.38

1.46

0.9236

59.12

4.71

0.9610

550.65

7.38

0.83

0.9872

288

123.31

1.38

0.9160

58.04

4.62

0.9479

849.54

11.65

0.85

0.9702

298

122.03

1.23

0.9300

56.52

4.52

0.9413

535.16

7.27

0.86

0.9734

308

120.97

1.11

0.9336

54.42

4.14

0.9426

363.63

4.81

0.87

0.9788