Application of Glycyrrhiza glabra Root as a Novel Adsorbent in the Removal of Toluene Vapors: Equilibrium, Kinetic, and Thermodynamic Study

Table 4

Langmuir, Freundlich, and D-R isotherm parameters for the adsorption of toluene onto GGR.

Adsorbate	Langmuir isotherm			Freundlich isotherm			D-R isotherm
	𝑄𝑚 (mg/g)	𝑏 (L/mg)	𝑅^2	𝑘𝑓	𝑛	𝑅^2	𝑞𝑚 (mg/g)	𝐸 (kJ/mol)	𝑅^2
Toluene	3.76	0.18	0.724	0.94	1.04	0.992	3.14	1.38	0.887