Journal of Nanomaterials

Research Article

Adsorptive Removal of Acid Blue 80 Dye from Aqueous Solutions by Cu-TiO₂

Table 4

Kinetics model parameters for AB80 adsorption onto Cu-TiO₂ at different temperatures.

(a)


mg L⁻¹	°C	mg g⁻¹	min	Elovich					Fractional power
mg L⁻¹	°C	mg g⁻¹	min	mg g⁻¹ min⁻¹	g mg⁻¹		SSE	RMSE	mg min⁻¹	min⁻¹		SSE	RMSE

30	25	11.5	35	2.816 ± 1.290	0.381 ± 0.062	0.959	8.435	0.666	3.581 ± 0.832	0.270 ± 0.060	0.914	17.59	0.962
	40	13.1	30	7.927 ± 5.430	0.412 ± 0.075	0.948	12.19	0.801	5.378 ± 0.941	0.209 ± 0.052	0.912	20.52	1.039
	50	14.8	24	12.17 ± 9.820	0.392 ± 0.076	0.942	16.59	0.934	6.483 ± 1.254	0.193 ± 0.051	0.907	26.37	1.178
	60	15.9	21	28.49 ± 27.1	0.418 ± 0.079	0.950	15.15	0.893	7.948 ± 1.246	0.165 ± 0.042	0.926	22.43	1.086

120	25	18.6	45	3.392 ± 1.350	0.219 ± 0.035	0.964	20.28	1.033	5.089 ± 1.237	0.297 ± 0.062	0.918	45.08	1.540
	40	20.8	24	8.969 ± 5.521	0.246 ± 0.044	0.949	30.9	1.275	7.736 ± 1.641	0.228 ± 0.056	0.909	54.32	1.691
	50	22.7	20	16.35 ± 12.53	0.243 ± 0.047	0.942	41.15	1.472	9.804 ± 1.946	0.201± 0.052	0.907	65.92	1.863
	60	25.4	18	157.1 ± 218.0	0.317 ± 0.069	0.949	36.08	0.947	14.59 ± 1.990	0.132 ± 0.037	0.932	48.37	1.596

(b)


mg L⁻¹]	°C	Pseudo-first-order					Pseudo-second-order
mg L⁻¹]	°C	min⁻¹	mg g⁻¹		SSE	RMSE	g mg⁻¹ min⁻¹	mg g⁻¹	mg g⁻¹ min⁻¹		SSE	RMSE

30	25	0.075 ± 0.005	11.21 ± 0.22	0.992	1.466	0.278	0.007 ± 0.001	12.97 ± 0.32	1.177	0.994	1.200	0.251
	40	0.107 ± 0.009	12.71 ± 0.24	0.989	2.534	0.365	0.011 ± 0.001	14.27 ± 0.32	2.240	0.992	1.811	0.309
	50	0.118 ± 0.008	14.25 ± 0.22	0.992	2.183	0.339	0.012 ± 0.001	15.86 ± 0.32	3.018	0.995	2.014	0.326
	60	0.139 ± 0.016	15.44 ± 0.35	0.979	6.189	0.571	0.013 ± 0.001	16.90 ± 0.34	3.713	0.992	2.497	0.363

120	25	0.068 ± 0.005	18.02 ± 0.39	0.992	4.381	0.480	0.004 ± 0.001	21.19 ± 0.01	1.796	0.996	3.773	0.446
	40	0.096 ± 0.007	19.88 ± 0.37	0.991	5.428	0.535	0.006 ± 0.001	22.54 ± 0.59	3.048	0.994	5.213	0.524
	50	0.110 ± 0.009	22.32 ± 0.39	0.991	7.712	0.694	0.008 ± 0.001	24.91 ± 0.61	4.964	0.994	6.695	0.594
	60	0.187 ± 0.020	24.54 ± 0.40	0.987	9.586	0.710	0.012 ± 0.001	26.47 ± 0.31	8.408	0.996	2.689	0.376