Abstract: The bentonite powder obtained in Xinyang was mixed with combustible powder and starch.The mixture can be changed into bentonite granle with porosity by organic coversion,extrusion and high temperature.Effects of organic coversion species,temperature,pH and content of combustible powder on adsorption performance were investigated.Adopting hexadecyl trimethyl ammonium chloride as coversion and using 3.5% combustible powder,pH7-8 and 80℃,adsorption ratio reached 91.2%.