Table 2.

Kinetic parameters and their correlation coefficients for the adsorption of CR onto Ce-BTC@MCC.

Model	Parameters	Value of parameters
Pseudo-first-order	K1 (min−1)	0.000032
	qe (mg g−1)	179.8
	R 2	0.6046
	χ 2	456.45
Pseudo-second-order	K2 (g mg−1 min−1)	0.0048
	qe (mg g−1)	206.1
	R 2	0.9878
	χ 2	27.2
Elovich	α (mg g−1 min−1)	2025.23
	β (g mg −1 )	0.036
	R 2	0.9443
	χ 2	64.27
Intra-particle diffusion	Kid,1 (mg g−1 min−1/2)	35.1
	C1 (mg g−1)	83.86
	R 1 2	0.9583
	Kid,2 (mg g−1 min−1/2)	4.2
	C2 (mg g−1)	179.12
	R 2 2	0.6156