α and γ Alumina Spheres for Azo Dye (Allura Red) Removal from Aqueous Media

Table 2

Kinetic parameters from the adjustment of PFO, PSO, ID, and ELOV models applied to the adsorption process of R40 on the γ-Alu spheres at pH =3.0, 5.0, and 10.0 ( =10 mg/L).

Kinetic model	pH 3.0
	R40 removal =94.9610 ± 0.1978%
	Parameters
PFO	(mg/g)	9.4961
	(h^-1)	0.0147
		0.9921
PSO	(g/mgh)	20.5581
		0.9768
ID	(mg/g/min)	0.5235
		0.9683
ELOV		0.6806
		0.1740
		0.9942
Kinetic model	pH 5.0
	R40 removal =84.5150 ± 0.4782%
	Parameters
PFO	(mg/g)	8.4515
	(h^-1)	0.0177
		0.9818
PSO	(g/mgh)	21.2427
		0.9699
ID	(mg/g/min)	0.6146
		0.9966
ELOV		0.6268
		0.1662
		0.9952
Kinetic model	pH 10.0
	R40 removal =53.7524 ± 0.6108%
	Parameters
PFO	(mg/g)	5.3752
	(h^-1)	0.0051
		0.9862
PSO	(g/mgh)	1.7872
		0.9394
ID	(mg/g/min)	0.2320
		0.9917
ELOV		0.0807
		0.1719
		0.9905