Methylene Blue Adsorption BY UV-Treated Graphene Oxide Nanoparticles (UV/n-GO): Modeling and Optimization Using Response Surface Methodology and Artificial Neural Networks

Table 5

Kinetic parameters and their correlation coefficients calculated for the adsorption of MB by UV/n-GO (pH = 6; dosage = 0.4 g/L; concentration = 25 mg/L; temperature = 303 K).

Models	Equations	Parameters	Values
Pseudo-first order		k 1(min^−1)	1.007
		q e(calc)mg/g	41.81
		R ^2	0.899
		χ ^2	0.5599
Pseudo-second order		k 2(g/(mg-min)	0.0349
		q e(calc)mg/g	43.5
		R ^2	0.9719
		χ ^2	0.1545
Elovich		β(g/mg)	0.2514
		α (mg/g.min)	5757.84
		R ^2	0.8572
		χ ^2	0.9263
		q e(Exp.)mg/g	44.35