Table 2 The parameters of Freundlich, Langmuir and D–R isotherms models for adsorptive removal of CR dye.

From: Reusable kaolin impregnated aminated chitosan composite beads for efficient removal of Congo red dye: isotherms, kinetics and thermodynamics studies

Equilibrium model

Parameter

Value

Freundlich

n

1.77619

kF (L/mg)

9.46891

R2

0.9999

Langmuir

qm (mg/g)

104.16

b (L/mg)

0.06295

R2

0.9582

D–R

qs (mg/g)

47

Kad (mol2 K−2 J−2)

9 × 10–7

R2

0.728

E (KJ mol−1)

0.745

Back to article page