Table 6. Kinetic Study Model Fitting Parameters of MMO/MG and MMO/CTX/MG Samples.

model	equation	parameters	MMO + MG	MMO/CTX + MG
pseudo-first order	qt = qe (1 – e–K1t), qe is the adsorption capacity at equilibrium and K1 is the pseudo-first-order rate constant	K1 (min–1)	18.65 × 104	18.64 × 104
		qe (mg/g)	9.22	8.9
		R2	0.86	0.96
pseudo-second order	K2 is the pseudo-second-order rate constant	K2 (g/(mg min))	1.03 × 106	1.03 × 106
		qe (mg/g)	9.22	8.9
		R2	0.83	0.96
intraparticle diffusion	Kip is the measure of diffusion coefficient and Cip is the intraparticle diffusion constant	Kip (mg/g min0.5)	0.69	0.64
		Cip (mg/g)	5.07	4.71
		R2	0.8	0.57
mixed first and second order	f2 is the mixed 1,2 order coefficient and K is the adsorption rate constant	K (min–1)	12.82 × 10–4	13.15 × 10–4
		qe (mg/g)	11.46	9.82
		f2 (g/(mg min))	0.99	0.99
		R2	0.97	0.99
Avrami model	qt = qe (1 – [e–Kavt]nav), Kav is the Avrami rate constant and nav is the Avrami component	Kav (min–1)	10.63	9.3
		nav (−)	0.44	0.68
		qe (mg/g)	0.41	0.65
		R2	0.96	0.98