Nanosized Spinel Ferrites Synthesized by Sol-Gel Autocombustion for Optimized Removal of Azo Dye from Aqueous Solution

Table 3

Kinetic parameters for Congo-Red adsorption onto spinel ferrites, determined by the nonlinear regression method.

Kinetic model and parameters	Adsorbent: CoFe2O4	Adsorbent: NiFe2O4
PFO	(mg/g)	(mg/g)
	ARE = 4.307	ARE = 2.605
	PSO	(mg/g)	(mg/g)
ARE = 0.916		ARE = 0.941
PnO		(mg/g)	(mg/g)
	ARE = 0.503	ARE = 0.745
	MOE	(mg/g)	(mg/g)
		ARE = 0.938	ARE = 0.893
ID
		ARE = 10.624	ARE = 11.443