Table 2. Adsorption Kinetic Parameters Obtained from Nonlinear Model Equations Fitting Method^a.

kinetic model	temp	parameters	MO	RhB	MB	CV
pseudo-first-order	298 K	qe,cal	138.3	1607.9	365.7	295.0
		k1	0.0352	0.0229	0.0312	0.1362
		adj. R2	0.9205	0.9220	0.8521	0.8447
pseudo-second-order	298 K	qe,cal	152.9	1791.0	396.0	321.7
		k2	0.000315	0.0000174	0.000122	0.000535
		adj. R2	0.9733	0.9585	0.9206	0.9226
intraparticle diffusion	298 K	kip	6.608	101.263	16.763	10.578
		C	39.1	221.3	108.0	168.5
		adj. R2	0.9024	0.9981	0.9541	0.9742
initial adsorption factor		Ri	0.7452	0.8688	0.7347	0.5351

^aExcept for the intraparticle diffusion model.