Adsorption of phosphorus from eutrophication water by modified diatomite

Modification of diatomite and adsorption of phosphorus from Eutrophication water by modified diatomite have been researched. It was found that the characteristic of diatomite has been change after modified, especially the surface area, number and size of micropores were increased obviously, the surface area of modified diatomite had increased 23 times. Phosphorus sorption was affected by the temperature and pH value, if temperature was higher, the adsorption balance time is shorter; adsorption capacity was decreased when pH value was increase between 4 to 11. Pseudo-second reaction kinetics equation could describe characteristics of phosphorus sorption well, phosphorus sorption behavior of modified diatomite can be simulated by Freundlich adsorption isotherm model.