The effect of the physical and chemical character of activated carbon surface on the bromate adsorption

In order to exploit the adsorption principle of bromate adsorbed onto the activated carbon,the effect of physical and chemical characters of the activated carbon surface on the bromate adsorption was studied.Tangshan activated carbon,Merck activated carbon and Xinhua activated carbon were compared in the experiment.Effects of the pore size and volume as well as the functional group distribution on the bromate adsorption were researched.The results show that Merck activated carbon which has the largest amount of mesopores has the best adsorption capability.Moreover,the surface of Merck activated carbon has the largest amount of lactones,which plays a positive role in the bromate removal.At last,the adsorption isotherms of the three activa-ted carbons were measured.It is found that the adsorption of Merck activated carbon is the highest,that of Xinhua activated carbon is the lowest and that of Tangshan activated carbon is in the middle.