Preparation of Magnetic Composite Polyaniline/Fe₃O₄−Hydrotalcite and Performance in Removal of Methyl Orange

Table 3

Fitting parameters of adsorption isotherms for MO on Pan/MHT composites.

Adsorbents	Langmuir isotherm			Freundlich isotherm			Dubinin-Radushkevich
	(mg/g)	b (L/mg)			(mg/g)		(mg/g)	β (mol^2/kJ^2)		(kJ/Mol)
0.5Pan/MHT	92.59	0.017	0.924	2.097	5.562	0.951	38.93	6.699	0.528	0.273
1 Pan/MHT	123.5	0.016	0.913	2.119	7.437	0.947	50.77	6.538	0.513	0.277
2 Pan/MHT	156.3	0.019	0.941	2.187	10.81	0.991	71.49	6.893	0.635	0.269