Adsorption kinetics parameters.

Models	IC dye			SAF
	4 × 10−5 M	3 × 10−5 M	2 × 10−5 M	3 × 10−5 M	2 × 10−5 M	1 × 10−5 M
Pseudo first order
q e (experiment)	83.42	62.80	46.02	43.88	32.6	16.64
q e (calculated)	48.5	17.9	10.2	43.0	27.0	16.7
R 2	0.89	0.92	0.69	0.94	0.91	0.69
Pseudo second order
q e (experiment)	83.42	62.80	46.02	43.88	32.6	16.64
q e (calculated)	90.0	65.7	48.7	52.6	38.4	19.8
R 2	0.99	0.99	0.99	0.99	0.99	0.99
Weber- Morris (IPD)
K (mg g−1min−0.5)	4.8	2.4	2.03	3.5	2.6	1.2
C	48.2	44.8	31.7	10.7	8.5	4.3
Elovich model
α (mg g−1 min−1)	166	2090	560	6.25	4.95	2.68
β (g mg−1)	0.078	0.15	0.185	0.089	0.122	0.25
R 2	0.98	0.99	0.96	0.99	0.98	0.98