Preparation of a Modified Nanoalumina Sorbent for the Removal of Alizarin Yellow R and Methylene Blue Dyes from Aqueous Solutions

Table 2

Adsorption isotherms and their statistical comparison values.

Dye	Isotherm model	Isotherm parameters	Adsorbents
			γ-Alumina	DNPH-γ-alumina
AY	Langmuir	(mg/g)		47.8
		(L/mg)		2.37
				0.008
				0.969
		Std error		0.017
		Std deviation		0.08
				1.6
AY	Freundlich			0.65
		(mg/g)		10.41
				0.845
		Std error		0.118
		Std deviation		0.26
				79.2
MB	Langmuir	(mg/g)		32.8
		(L/mg)		17.4
				0.001
				0.797
		Std error		0.176
		Std deviation		0.34
				1.58
MB	Freundlich			0.94
		(mg/g)		1.20
				0.985
		Std error		0.075
		Std deviation		0.22
			38,684.8	496.1