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 5

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

Isotherm	Parameters	Adsorbent
Langmuir 1		0.60
	(mg/g)	28.65
	(L/mg^/)	0.002
	RL	0.62
Langmuir 2		0.9674
	(mg/g)	0.062
	(L/mg)	504.03
	RL	0.000006
Langmuir 3		0.6193
	(mg/g)	454.54
	(L/mg)	0.034
	RL	0.089
Langmuir 4		0.5531
	(mg/g)	0.0003
	(L/mg)	20.44
	RL	0.00016
Freundlich		0.96
		1.33
	(mg/g)	55.59