The Synthesis of Magnetic Nitrogen-Doped Graphene Oxide Nanocomposite for the Removal of Reactive Orange 12 Dye

Table 2

The kinetics and isotherm parameters for the removal of RO12 dye on the surface of CaFe₂O₄ nanoparticles and CaFe₂O₄/N-GO nanocomposite.

Item	Coefficient	Adsorbent
		CaFe2O4	CaFe2O4/N-GO
Pseudo 1^st order		0.916	0.949
	(L/min)	4.551	3.611
	(mg/g)	181.0	132.0
Pseudo 2^nd order		0.996	0.998
	(g/mg.min)	4.066	4.994
	(mg/g)	256.0	287.0
Intraparticle diffusion		0.770	0.824
		120.20	168.57
		11.279	9.835
Freundlich isotherm		0.952	0.951
		0.4539	0.3934
	(L.mg/g)	33.0	61.0
Langmuir isotherm		0.960	0.980
	(L/mg)	0.074	0.189
	(mg/g)	250.0	333.33