Environmental Sciences Europe

Table 1 Kinetics data with their correlation coefficient (R²) for the adsorption of MB onto claytone and clayD2000 at 25 °C

From: Fashionable epoxy/clay nanocomposites using modified clay-loaded methyl blue dye

Model	Parameters	Adsorbents
Model	Parameters	Claytone	ClayD2000
Pseudo-first order	q_{e, cal} (mg g⁻¹)	9.853	0.593
	k₁ (min⁻¹)	0.162	0.103
	R²	0.881	0.947
Pseudo-second order	q_{e, exp} (mg g⁻¹)	1.424	1.401
	q_{e, cal} (mg g⁻¹)	1.453	1.416
	k₂ (g mg⁻¹ min⁻¹)	0.559	0.606
	R²	0.998	0.999
Intra-particle diffusion	k_p1 (mg g⁻¹ min^−0.5)	0.271	0.053
	R²	0.733	0.886
	k_p2 (mg g⁻¹ min^−0.5)	0.004	0.005
	R²	0.732	0.695

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