title: A biocompatible and novelly-defined Al-HAP adsorption membrane for highly effective removal of fluoride from drinking water.
abstract: A biocompatible and novelly-defined adsorption membrane for rapid removal of fluoride was prepared. Both adsorption and membrane techniques were used in this research. Al(OH)3nanoparticles modified hydroxyapatite (Al-HAP) nanowires were developed and made into Al-HAP membrane. The adsorption data of Al-HAP adsorbent could be well described by Freundlich isotherm model while the adsorption kinetic followed pseudo-second-order model. The maximum of adsorption capacity was 93.84mg/g when the fluoride concentration was 200mg/L. The adsorption mechanism was anion exchanges and electrostatic interactions. The contribution rates of HAP nanowires and Al(OH)3nanoparticles in fluoride removal were 36.70% and 63.30%, respectively. The fixed-bed column test demonstrate that the Al-HAP was biocompatible and in a good stability during the process of water treatment. The fluoride removal abilities of Al-HAP membrane with 0.3mm thickness could reach 1568L/m2when fluoride concentrations were 5mg/L. This study indicated that the Al-HAP membrane could be developed into a very viable technology for highly effective removal of fluoride from drinking water.
authors.affiliation: Nanomaterials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China; Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Junyong
authors.initials: J
authors.lastname: He
authors.affiliation: Nanomaterials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China; Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Kai
authors.initials: K
authors.lastname: Chen
authors.affiliation: Nanomaterials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China; Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Xingguo
authors.initials: X
authors.lastname: Cai
authors.affiliation: Nanomaterials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China; Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Yulian
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Chengming
authors.initials: C
authors.lastname: Wang
authors.affiliation: Nanomaterials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China; Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Kaisheng
authors.initials: K
authors.lastname: Zhang
authors.affiliation: Nanomaterials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Jin
authors.affiliation: Nanomaterials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China.
authors.forename: Fanli
authors.initials: F
authors.lastname: Meng
authors.affiliation: Mengcheng Water Affair Bureau, Mengcheng, Anhui 233500, PR China.
authors.forename: Xuguang
authors.initials: X
authors.lastname: Wang
authors.affiliation: Nanomaterials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China. Electronic address: ltkong@iim.ac.cn.
authors.forename: Lingtao
authors.initials: L
authors.lastname: Kong
authors.affiliation: Nanomaterials and Environmental Detection Laboratory, Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, PR China. Electronic address: jhliu@iim.ac.cn.
authors.forename: Jinhuai
authors.initials: J
authors.lastname: Liu
mesh_terms: D000327:Adsorption; D000536:Aluminum Hydroxide / Q000737:chemistry*; D060766:Drinking Water / Q000032:analysis*; D017886:Durapatite / Q000737:chemistry*; D005459:Fluorides / Q000302:isolation & purification*; D008567:Membranes, Artificial; D053758:Nanoparticles / Q000737:chemistry / Q000648:ultrastructure; D053770:Nanowires / Q000737:chemistry / Q000648:ultrastructure; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D060766:Drinking Water; D008567:Membranes, Artificial; D014874:Water Pollutants, Chemical; D000536:Aluminum Hydroxide; D017886:Durapatite; D005459:Fluorides
keywords: Adsorption; Al-HAP nanowires; Fluoride; Membrane; Modified