The Use of Sugarcane Bagasse to Remove the Organic Dyes from Wastewater

Table 4

Kinetic parameters related to the adsorption of MB on the SCB.

	Dye concentration (mg·L^−1)	5	15	25
	(mg·g^−1)	2.621	6.285	7.047
Pseudo-first-order kinetic model	k1 (min^−1)	2.1591	1.4277	1.1817
	(mg·g^−1)	0.968	0.991	0.9814
	R^2	0.66	0.092	0.55
Pseudo-second-order kinetic model	k2 (g·mg^−1·min^−1)	2.329	10.156	0.991
	(mg·g^−1)	2.621	6.153	7.032
	R^2	1	0.997	1
Intraparticle diffusion model	Kid1 (g·mg^−1·min^−1/2)	0.8769	1.9524	2.2958
	C (mg·g^−1)	0.12	0.2071	0.3122
	R^2	0.94	0.96	0.93
	Kid2 (g·mg^−1·min^−1/2)	0.0061	0.1168	0.1142
	C (mg·g^−1)	2.5538	5.5959	6.4559
	R^2	0.76	0.69	0.99