Adsorptive Removal of Methylene Blue and Crystal Violet onto Micro-Mesoporous Zr3O/Activated Carbon Composite: A Joint Experimental and Statistical Modeling Considerations
Table 1
Isotherm models.
Isotherm
Equation
Description
Langmuir
1/Qe = 1/Qm + 1/(KLQmCe)
Ce: concentration at equilibrium; Qe = uptake at equilibrium; Qm = maximum adsorption capacity; KL= energy of adsorption
Freundlich
ln (Qe) = ln KF + 1/n ln (Ce)
KF = adsorption capacity; n = intensity of adsorption; 1/n = 0 irreversible; 1/n > unfavourable; 0 < 1 favourable