Adsorption of Crystal Violet onto an Agricultural Waste Residue: Kinetics, Isotherm, Thermodynamics, and Mechanism of Adsorption

Table 4

Pseudo-first-order and pseudo-second-order adsorption rate constants for the different initial CV concentrations (C₀).

C0 (mg/L)	Pseudo-first-order kinetic			Pseudo-second-order kinetic
	q1 (mg/g)	K1 (min^−1)	R^2	q2 (mg/g)	K2 (g.mg^−1min^−1)	R^2
25	2.2557	0.04441	0.95606	5.3596	0.0471	0.99981
50	2.9961	0.0344	0.90404	8.5048	0.3399	0.99963