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Table 7 Equilibrium isotherm modeling of MG adsorption onto adosorbents nano-bentonite, MgO impregnated clay and raw bentonite

From: Optimization study of the adsorption of malachite green removal by MgO nano-composite, nano-bentonite and fungal immobilization on active carbon using response surface methodology and kinetic study

Isotherm

Nano-bentonite

MgO-clay

Raw bentonite

Langmuir

   

qe (mg/g)

13.8

17.2

10.27

R2

0.992

0.962

0.952

Freundlich

   

N

2.3

1.3

1.36

KF (L/mg)

109.5

3.6

5.09

R2

0.973

0.982

0.84

Tempkin

   

B (J/mol)

0.005

0.004

11.11

AT (L/mg)

4.055

2.11

23.12

R2

0.965

0.982

0.945