Table 2.

Parameters of intra-particle diffusion model for MB adsorption.

C0 (mg·L−1)	Step I			Step II
	Ki1 (mg·g−1·min−1/2)	C (mg·g−1)	R 2	Ki2 (mg·g−1·min−1/2)	C (mg·g−1)	R 2
100	3.49	13.06	0.9899	0.39	77.04	0.9819
200	5.97	28.21	0.9868	1.09	127.98	0.9825
300	9.31	32.32	0.9924	1.61	183.07	0.9929
400	9.70	60.10	0.9867	1.61	233.05	0.9773