Trinary Component Adsorption of Methylene Blue, Methyl Orange, and Methyl Red from Aqueous Solution Using TiO₂/Activated Carbon

Table 2

The parameters of adsorption isotherms of Langmuir, Freundlich, and Temkin models for TiO₂/AC (0.5/1), TiO₂, and AC in single component system of MB, MO, and MR.

Adsorbent	Dyes	Langmuir isotherm model			Freundlich isotherm model			Temkin isotherm model
		(mmol g^-1)	(L g^-1)			(L g^-1)		(L g^-1)	(KJ.mol^-1)
AC	MB	0.865	0.139	0.989	1.737	49.854	0.993	589.03	13.39	0.986
TiO2/AC		0.452	0.094	0.997	1.744	18.683	0.998	256.19	23.51	0.997
TiO2		0.200	0.084	0.999	1.932	9.072	0.999	205.23	49.17	0.999
AC	MO	0.532	0.539	0.993	4.706	87.207	0.991	4682.30	28.00	0.992
TiO2/AC		0.329	0.390	0.988	2.686	37.545	0.995	1366.62	35.12	0.991
TiO2		0	0	—	0	0	—	0	0	—
AC	MR	1.219	0.152	0.979	2.129	64.512	0.951	359.84	8.82	0.982
TiO2/AC		0.806	0.305	0.998	3.116	75.239	0.908	0.80	5.48	0.823
TiO2		0	0	—	0	0	—	0	0	—