Statistical Modeling and Kinetic Studies on the Adsorption of Reactive Red 2 by a Low-Cost Adsorbent: Grape Waste-Based Activated Carbon Using Sulfuric Acid Activator-Assisted Thermal Activation

Table 6

Kinetic model parameters and correlation coefficients for RR2 adsorption on GWAC.

Model	Parameters	Adsorbent
Pseudofirst-order		0.75
	(mg/g)	501.18
	(1/min)	0.03
Pseudosecond-order (type I)		0.9997
	(mg/g)	4.70
	(g/min·mg)	0.02
Pseudosecond-order (type II)		0.9448
	(mg/g)	0.95
	(g/min·mg)	5.05
Pseudosecond-order (type III)		0.9908
	(mg/g)	0.13
	(g/min·mg)	21.73
Pseudosecond-order (type IV)		0.9929
	(mg/g)	8.33
	(g/min·mg)	0.02