Effective and Simple NaOH-Modification Method to Remove Methyl Violet Dye via Ipomoea aquatica Roots

Table 1

Comparison of the pseudo-first-order, pseudo-second-order, and Elovich models and their error values of linear analyses.

Kinetics model and parameters	Values	ARE	SSE	EABS	MPSD
Pseudo-first-order		91.471	0.195	1.958	96.520	1.785
	0.6289
(min^-1)	0.058
(mmol g^-1)	0.117
(mmol g^-1)	0.019
Pseudo-second-order		3.736	0.001	0.061	7.493	0.007
	0.9996
(g mmol min^-1)	9.451
(mmol g^-1)	0.117
(mmol g^-1)	0.122
Elovich		7.421	0.001	0.135	11.943	0.018
	0.7437
(mmol g^-1 min^-1)	3.43
(g mmol^-1)	73.60

is the pseudo-first-order rate constant, is pseudo-second-order rate constant, while and represent the adsorption capacity at equilibrium obtained experimentally and those predicted by the kinetics models, respectively.