Table 5: Equilibrium isotherm parameters for the adsorption of tartrazine onto organobentonite.

Langmuir (mg/g)40.79 ± 0.71
(L/mg)4.06 ± 0.62
0.916

Freundlich (L/g)33.02 ± 0.27
n17.64 ± 0.89
0.988