Eq. (7) clearly shows that since the coefficient ofpHis the highest
among all the variables, the effect of this variable on the adsorption
capacity constant of Freundlich adsorption isotherm (kf) is
the strongest. But, in Eq. (8) the coefficient of surface area of activated
carbon is the highest among all the variables and therefore,
the effect of this variable on the adsorption capacity constant of
Langmuir adsorption isotherm (Q0) is the strongest.