Kinetics, equilibrium, and isotherm of the adsorption of cyanide by MDFSD

It was estimated through this study that the adsorption rate is positively affected by increasing MDFSD's relative quantity, adsorbent concentration, acidity and temperature. The adsorption equilibrium was shifted toward higher adsorption capacity by the substrate concentration, temperature and acidity. The adsorption data fit to Freundlich, Langmuir and Frumkin models, but attained a better correlation with the order of models as Langmuir > Frumkin > Freundlich. Activation thermodynamic parameters of adsorption, the adsorption thermodynamic parameters, and Freundlich, Langmuir and Frumkin constants were obtained.