title: [Study on phosphate removal and recovery by activated alumina].
abstract: Activated alumina was studied for removing phosphate from water, and the recovery of adsorbed phosphate on activated aluminum oxide was also tested. Phosphate solution was prepared using distilled water, tap water and Luoshijiang River water, respectively. All the phosphate adsorption tests using activated alumina were proved to be well fitted with Langmuir isotherm and the respective maximum adsorption amount were 20.88, 32.15 and 29.85 mg x g(-1), respectively. The presence of electrolyte in water could be a positive factor for phosphate removal. As the pH value of phosphate solution became lower the Zeta potential of activated alumina increased, which could enhance the phosphate removal efficiency of activated alumina. The recovery tests indicated that NaOH (0.1 mol x L(-1)) solution could almost completely extract the phosphate adsorbed by activated alumina.
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Wen-Na
authors.initials: WN
authors.lastname: Meng
authors.forename: Jie
authors.initials: J
authors.lastname: Xie
authors.forename: De-Yi
authors.initials: DY
authors.lastname: Wu
authors.forename: Zhen-Jia
authors.initials: ZJ
authors.lastname: Zhang
authors.forename: Hai-Nan
authors.initials: HN
authors.lastname: Kong
mesh_terms: D000327:Adsorption; D000537:Aluminum Oxide / Q000737:chemistry*; D010758:Phosphorus / Q000737:chemistry / Q000302:isolation & purification*; D012972:Sodium Hydroxide / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods
chemical_list: D014874:Water Pollutants, Chemical; D010758:Phosphorus; D012972:Sodium Hydroxide; D000537:Aluminum Oxide