Table 2.

Maximum oil sorption capacities at equilibrium, rate constants and correlation coefficients evaluated at 25 °C.

PU1	Gasoline		Diesel
qe (g/g)experimental	49.8		62.1
Pseudo first-order	R2	0.9563	0.9462
	qe (g/g)	1.23	1.15
	k1	0.0599	0.0673
Pseudo second-order	R2	0.9902	0.9928
	qe (g/g)	64.5	67.6
	k1	0.0155	0.0148
Intraparticle diffusion	R2	0.7273	0.8402
	Ci	18.5	13.8
	ki	7.9	5.0
PU2	Gasoline		Diesel
qe (g/g)experimental	51.9		65.2
Pseudo first-order	R2	0.9556	0.9545
	qe (g/g)	1.12	1.20
	k1	0.0593	0.0602
Pseudo second-order	R2	0.9924	0.9936
	qe (g/g)	60.9	69.9
	k2	0.0164	0.0143
Intraparticle diffusion	R2	0.8136	0.868
	Ci	14.3	13.9
	Ki	4.8	4.9