Fe₃O₄/Reduced Graphene Oxide Nanocomposite: Synthesis and Its Application for Toxic Metal Ion Removal

Table 2

Adsorption kinetic parameters for Ni(II) adsorption on the Fe₃O₄/rGO composite.

(mgL^−1)	Pseudo-first-order kinetics			Pseudo-second-order kinetics
	(min^−1)	(mg⋅g^−1)		(g⋅mg^−1⋅min^−1)	(mg⋅g^−1)	(mg⋅g^−1)
11.69	0.0228	15.50	0.9982	0.0015	22.37	18.88	0.9988
19.78	0.0204	22.47	0.9948	0.0010	34.36	29.41	0.9966
30.82	0.0220	33.62	0.9907	0.0007	48.31	40.65	0.9970
40.18	0.0254	36.22	0.9906	0.0009	53.76	47.12	0.9990
51.11	0.0177	29.61	0.9930	0.0010	58.48	53.75	0.9956