Table 2. Summary of Results for Experimental Data Fitting by Different Kinetic Models for the MB Dye Adsorption by AA-VSA-P/SPIONs-I and AA-VSA-P/SPIONs-III at pH 1.4.

			MB (12 mg/L)
			AA-VSA-P/SPIONs
pH	kinetic model	parameter	I	III
1.4	pseudo-first-order	k1 (min–1)	0.004	0.003
		qe (cal.) (mg/g)	1.25	0.81
		qe (exp.) (mg/g)	1.16	0.74
		R2	0.97	0.96
	pseudo-second-order	k2 (g mg–1 min–1)	0.002	0.002
		qe (cal.) (mg/g)	1.56	1.11
		qe (exp.) (mg/g)	1.16	0.74
		R2	0.97	0.96