Activated Alumina, usually be used for defluorination, adsorption, desiccant in water&air treatment. Activated AluminaFunction1,wiping off ... dioxide, hydrogen fluoride and hydrocarbons.6,mostly be fit for defluorination treatment of fluorinated water.Note.as manufacturer, customerized specifications are ... /coal columnActive carbon(HD-AC01,02,04,05) Activated Alumina defluorination