Isotherm model Equation Langmuir   Freundlich    Temkin

Table 4: Summary of equilibrium isotherms (KL, KF, B1, KT: Langmuir, Freundlich and Temkin constants; n: heterogeneity coefficient; qm: maximum adsorption capacity; qe: uptake at equilibrium; Ce: equilibrium concentration; b: activity coefficient related to mean sorption energy).