Kinetics, Isotherm, Thermodynamics, and Recyclability of Exfoliated Graphene-Decorated MnFe₂O₄ Nanocomposite Towards Congo Red Dye

Table 3

Isotherm parameters over EG@MnFe₂O₄ and MnFe₂O₄.

Model	Parameters	Value
		EG@MnFe2O4	MnFe2O4
Langmuir	kL (L/mg)	0.0018	0.0210
	Qm (mg/g)	71.79	19.57
	RL = 1/(1 + KL.Co)	0.90	0.44
	R^2	0.9572	0.7310
Freundlich	kF (mg/g)/(mg/L)^1/n	14.956	0.885
	1/n	0.39	0.63
	R^2	0.9274	0.8519
Temkin	kT (L/mg)	1.00	6.01
	BT	16.58	4.87
	R^2	0.8687	0.8205
D–R	B (kJ^2/mol^2)	2.64	0.46
	Qm (mg/g)	50.69	11.302
	E (J/mol)	435.19	103.75
	R^2	0.5811	0.8483