On the Suitability of Almond Shells for the Manufacture of a Natural Low-Cost Bioadsorbent to Remove Brilliant Green: Kinetics and Equilibrium Isotherms Study

Table 3

Adsorption of BG dye onto ASP: kinetic model parameters of intraparticle diffusion, pseudo-first-order, and pseudo-second-order models.

		Intraparticle diffusion			Pseudo-first-order			Pseudo-second-order
Concentration of BG dye (mg/L)	(qe)exp	Kp	I		qe(cal)	K1		qe(cal)	K2
20	19.90	0.04	19.65	0.64	15.43	0.07	0.95	20	0.28	0.99
30	29.97	0.02	29.80	0.76	20.95	0.44	0.96	30.03	0.30	0.99
40	39.91	0.20	38.51	0.92	1.54	0.06	0.94	40.16	0.08	0.99
50	49.85	0.30	47.85	0.95	2.55	0.07	0.94	50.25	0.06	0.99