Kinetic data for the adsorption of MB dye using complex 1–2 (C_o = 10 mg l⁻¹, pH = 6, m = 10 mg)^a.

Kinetic equations	Calculated parameters	1	2
Lagergren pseudo first order	K 1 (min−1)	0.142	0.144
	q (mg g−1)	0.87	0.86
	R 2	0.98	0.97
Pseudo-second order	K 2 (g mg−1 min−1)	0.009	0.008
	q (mg g−1)	1.07	1.01
	R 2	0.9863	0.9860
Elovich	α (mg g−1 min−1)	0.022	0.019
	β (mg g−1 min−1)	4.16	4.4
	R 2	0.9785	0.9825
Intra-particular-diffusion	K d (mg g−1 min−1/2)	0.048	0.044
	C (mg g−1)	0.994	0.996
	R 2	0.013	0.004

^a K ₁: is the pseudo first order kinetic constant (min⁻¹), K₂: is the pseudo-second order kinetic constant (g mg⁻¹ min⁻¹), K_d: is the intra-particular-diffusion kinetic constant (g mg⁻¹ min^−1/2), α: is the initial adsorption rate (mg g⁻¹ min⁻¹), β: is the desorption constant (g mg⁻¹) during any experiment.