title: Superb fluoride and arsenic removal performance of highly ordered mesoporous aluminas.
abstract: Highly ordered mesoporous aluminas and calcium-doped aluminas were synthesized through a facile and reproducible method. Their fluoride adsorption characteristics, including adsorption isotherms, adsorption kinetics, the effect of pH and co-existing anions were investigated. These materials exhibited strong affinity to fluoride ions and extremely high defluoridation capacities. The highest defluoridation capacity value reached 450 mg/g. These materials also showed superb arsenic removal ability. 1g of mesoporous alumina was able to treat 200 kg of arsenic contaminated water with a pH value of 7, reducing the concentration of arsenate from 100 ppb to 1 ppb.
authors: Key Laboratory for Molecular Nanostructures and Nanotechnology, Institute of Chemistry, Beijing National Laboratory for Molecular Sciences (BNLMS), Chinese Academy of Sciences, Beijing, PR China.
authors: Wei
authors: W
authors: Li
authors: Chang-Yan
authors: CY
authors: Cao
authors: Ling-Yan
authors: LY
authors: Wu
authors: Mao-Fa
authors: MF
authors: Ge
authors: Wei-Guo
authors: WG
authors: Song
mesh_terms: D000327:Adsorption; D000537:Aluminum Oxide / Q000737:chemistry*; D001151:Arsenic / Q000302:isolation & purification*; D005459:Fluorides / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D046529:Microscopy, Electron, Transmission; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D014874:Water Pollutants, Chemical; D000537:Aluminum Oxide; D001151:Arsenic; D005459:Fluorides