Journal of Analytical Science and Technology

Table 3 Comparison of the pseudo-first-order and pseudo-second-order adsorption rate constants and the calculated and experimental q_e values obtained at different initial dye concentrations

From: Alginate-coated perlite beads for the efficient removal of methylene blue, malachite green, and methyl violet from aqueous solutions: kinetic, thermodynamic, and equilibrium studies

Adsorbent				Pseudo-first-order			Pseudo-second-order
Adsorbent	Dye	C_o(ppm)	q _{e exp}	k ₁	q _e	R ²	k ₂	q _e	R ²
AP	MB	25	20.90	0.010	10.60	0.866	0.0031	20.83	0.999
	MB	50	35.87	0.013	16.06	0.799	0.0018	37.31	0.998
	MB	100	70.83	0.012	28.21	0.966	0.0016	70.92	0.999
AP	MG	25	16.90	0.0096	9.68	0.892	0.0031	16.89	0.995
	MG	50	30.87	0.0136	16.47	0.854	0.0016	32.68	0.996
	MG	100	49.83	0.0117	16.84	0.800	0.0025	50.00	0.999
AP	MV	25	24.00	0.0169	6.90	0.786	0.0049	24.75	0.999
	MV	50	46.87	0.0116	10.63	0.560	0.0024	47.85	0.997
	MV	100	89.00	0.0190	35.86	0.871	0.0006	96.15	0.990
P	MB	10	3.00	0.0066	2.12	0.955	0.0130	2.74	0.989
	MB	25	4.25	0.0102	3.39	0.988	0.0053	4.56	0.983
	MB	50	6.20	0.0075	4.52	0.921	0.0047	6.08	0.996
P	MG	10	2.59	0.0031	2.02	0.781	0.0181	1.71	0.996
	MG	25	3.87	0.0063	2.50	0.895	0.0142	3.39	0.977
	MG	50	4.83	0.0089	4.07	0.978	0.0037	5.17	0.965
P	MV	10	2.19	0.0091	1.28	0.867	0.0241	2.16	0.997
	MV	25	3.87	0.0080	2.44	0.865	0.0110	3.76	0.993
	MV	50	5.83	0.0097	4.65	0.956	0.0030	6.46	0.974

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