Mechanistic Study of Adsorption of Acid Orange-7 over Aluminum Oxide Nanoparticles

Table 4

Comparison of kinetic constants for the adsorption of AO-7 on ANP.

Kinetic model	kinetic constants	Values
Lagergren model	𝑘1	0.01032 min^−1
	𝑅	0.9822
	Std error	2.582
	Std deviation	60747
Pseudo second order	𝑘2	9.424 × 10^−4 mg · g^−1 min^−1
	𝑅	0.9956
	Std error	2.267
	Std deviation	6.789
Elovich model	𝛼	29.414
	𝛽	0.07127
	𝑅	0.9809
	Std error	0.6779
	Std deviation	2.329