activated alumina

noun, Chemistry
1.
alumina in the form of granules having many fine pores, used to adsorb water and various gases.
Examples from the web for activated alumina
  • activated alumina adsorption process removes fluoride from ground water.
  • Granular activated alumina was the first adsorptive media successfully used.
  • activated alumina is a sorption process that uses porous, granular material with ion exchange properties.
British Dictionary definitions for activated alumina

activated alumina

noun
1.
a granular highly porous and adsorptive form of aluminium oxide, used for drying gases and as an oil-filtering material and catalyst