Table 8 Correlation values and observed parameters obtained from adsorption isotherms for the removal of MG dye by rGO/ -Fe2O3 nanocomposite. The adsorption conditions were pH 8, 122 mg/100 mL rGO/-Fe2O3 dose, 113 min contact time, 25 °C temperature and different MG dye solutions (20, 40, 60, 80 and 100 min).

From: Response surface methodology for the design of malachite green dye removal by γ-Fe2O3 dispersed on reduced graphene oxide sheets

Langmuir Isotherm

Freundlich Isotherm

qm(mg g− 1)

kL

(L mg− 1)

RL

R2

1/n

n

KF

(L mg− 1)

R2

73.53

0.14

0.26

0.816

0.626

1.60

10.50

0.947

Temkin Isotherm

DRK Isotherm

AT

(L g− 1)

B

(J mol.−1)

R2

qm

(mg g− 1)

KDRK(mol.2J− 2)

E

(J mol.−1)

R2

1.66

15.21

0.884

37.39

5 × 10− 7

1000

0.835

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