Table 2. Kinetic model parameters for the adsorption of Pb(ii) and CR on Co-MOF.

Kinetic model	Parameters	Pb(ii)	CR
	q max (exp.) (mg g−1)	309.7	329.5
Pseudo-1st-order	q max (cal.) (mg g−1)	97.90	75.08
	k 1 (min−1)	0.0485	0.1142
Pseudo-2nd-order	q max (cal.) (mg g−1)	312.5	322.6
	k 2 (g mg−1 min−1)	0.0023	0.0107
Intra-particle diffusion	C (mg g−1)	204.3	245.6
	K id (mg g−1 min−1/2)	14.93	18.31
Elovich	α (mg g−1 min−1)	14 256	2 152 770
	β (g mg−1)	0.0329	0.0445