Anatase titanium dioxide nanoparticles were employed for the adsorption of fluoride ions from aqueous solution.The process was studied in details by varying the pH value,adsorption time and temperature.The results showed that equilibrium was reached within 2.0 min at room temperature.The adsorption efficiency was over 97% at pH 2.0~10.0.Adsorbed fluoride ions were desorbed with 0.1 mol/L NaOH within 3.0 min,while the desorption efficiency could be up to 96%.The kinetic experimental data properly correlate w...