title: [Study on the defluoridation of drinking water with synthetic hydroxyapatite].
abstract: Synthetic hydroxyapatite was used as a material for the defluoridation of drinking water. The defluoridation capacity, regeneration the capability of defluoridator and the corresponding parameters of defluoridation and regeneration have been studied with batch and column test. The results showed that the defluoridation capacity of synthetic hydroxyapatite on F- was 3.7-4.3 mg/g in batch test, 5.6 mg/g for break through (1.0 mg/L is considered as the break through point) in column test, and 10.7 mg/g for saturation in column test. The efficiency of regeneration was 46%-64% for saturated hydroxyapatite with surface-coating method.
authors.affiliation: Institute of Environmental Health & Engineering, Chinese Academy of Preventive Medicine, Beijing 100050, China.
authors.forename: B
authors.initials: B
authors.lastname: Ying
authors.forename: X
authors.initials: X
authors.lastname: Li
authors.forename: Z
authors.initials: Z
authors.lastname: Cong
mesh_terms: D017886:Durapatite; D005459:Fluorides / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*; D014881:Water Supply / Q000032:analysis*
chemical_list: D014874:Water Pollutants, Chemical; D017886:Durapatite; D005459:Fluorides