Table 2.

The kinetic parameters from intraparticle diffusion model.

Co (mg/L)	First step			Second step			Third step
	Kp,1	C1	R2	Kp,2	C2	R2	Kp,3	C3	R2
50	11.58	15.15	0.826	7.16	31.23	0.973	2.18	61.22	0.905
100	17.20	17.95	0.895	10.96	34.53	0.984	3.98	92.59	0.993
200	21.81	36.81	0.970	17.50	44.11	0.957	8.25	121.18	0.986
300	34.39	32.05	0.988	28.05	42.05	0.980	9.88	153.22	0.948