Table 3.

Models and parameters related to adsorption isotherm of phenanthrene.

Model	Langmuir model			Freundlich model
Parameter	Qm	kL	R2	1/n	Kf	R2
Clean soil	140.85	0.046	0.928	0.572	2.96	0.980
Cd-contaminated soil	144.93	0.051	0.921	0.555	3.12	0.981