Table 7 Kinetics parameters of models on GA, OS400 and OSMG adsorbents.

Adsorbent	Conc.(ppm)	Pseudo first-order model			Pseudo second-order model				Intraparticle diffusion model
Adsorbent	Conc.(ppm)	q_e,1,cal (mg/g)	K₁ (min^-1)	R²	q_e,2,cal (mg/g)	K₂ (g/mg min)	h (mg/g min)	R²	K_int mg/g min^-0.5	C (mg/g)	R²
GA	5	1.098	0.042	0.985	3.855	0.0144	0.215	0.996	0.3223	0.372	0.939
	4	1.036	0.041	0.986	3.590	0.0114	0.147	0.993	0.2939	0.192	0.956
	3	0.939	0.048	0.991	3.066	0.0144	0.136	0.983	0.2556	0.184	0.924
	2	0.827	0.058	0.980	2.546	0.0185	0.120	0.961	0.2146	0.177	0.879
	1	0.249	0.089	0.966	1.292	0.1347	0.225	0.991	0.1112	0.299	0.736
OS400	5	2.161	0.054	0.903	8.992	0.0036	0.297	0.979	0.7186	0.231	0.953
	4	1.990	0.040	0.851	10.03	0.0013	0.133	0.957	0.6153	-0.39	0.971
	3	1.621	0.035	0.901	8.445	0.0013	0.098	0.901	0.4892	-0.34	0.957
	2	0.951	0.065	0.978	3.249	0.0463	0.489	0.997	0.2739	0.739	0.798
	1	0.489	0.103	0.997	1.675	0.1700	0.477	0.997	0.1395	0.480	0.697
OSMG	5	1.992	0.089	0.956	9.938	0.0358	3.544	0.999	0.7862	3.285	0.659
	4	1.586	0.085	0.902	8.007	0.0586	3.761	0.999	0.6216	2.839	0.619
	3	1.371	0.107	0.881	5.907	0.1170	4.085	0.999	0.4512	2.230	0.580
	2	0.912	0.122	0.888	3.850	0.2530	3.751	0.999	0.2892	1.524	0.549
	1	0.587	0.219	0.812	1.812	1.0960	3.600	0.999	0.1349	0.746	0.520

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