Table 3.

Regression analysis of oil sorption by PU1 and PU2. Parameters estimated using Langmuir, Freundlich and Redlich–Peterson models.

Gasoline/Water	PU1		PU2
Isotherm
Langmuir model	KL	0.33	0.38
	qm (g/g)	47.3	49.7
	R2	0.9995	0.9975
Freundlich model	KF	17.39	15.44
	N	3.83	3.24
	R2	0.8756	0.9284
Redlich–Peterson model	A (L/g)	4.172	4.383
	B (L/g)β	0.077	0.081
	Β	1.124	1.125
	R2	0.9998	0.9909
Diesel/water	PU1		PU2
Isotherm
Langmuir model	KL	0.60	0.96
	qm (g/g)	59.5	63.3
	R2	0.9981	0.9971
Freundlich model	KF	20.29	19.99
	N	2.79	2.68
	R2	0.9698	0.9407
Redlich–Peterson model	A (L/g)	5.248	5.583
	B (L/g)β	0.097	0.103
	Β	1.135	1.136
	R2	0.9963	0.9942