title: Adsorptive removal of fluoride from drinking water using porous starch loaded with common metal ions.
abstract: In this study, porous corn starch was loaded with Zr, Al, Fe or La to produce the composites PS-Zr, PS-Al, PS-Fe and PS-La. Fluoride adsorption from water was tested at different biosorbent dosages, contact times, solution pH values and initial fluoride concentrations. The biosorbents were characterized by microscopy and spectroscopy. PS-Zr was shown superior defluoridation capacity over a pH range of 3.0-9.0. The adsorption process could be described by the Langmuir isotherm model and the Lagergren pseudo-second-order kinetic model. The maximum fluoride adsorption capacity calculated to be for PS-Zr was 25.41mg/g. Our results revealed that PS-Zr could be employed as an effective biosorbent for removal of fluoride from drinking water.
authors.affiliation: School of Tea & Food Science and Technology, Anhui Agricultural University/State Key Laboratory of Tea Plant Biology and Utilization, Hefei 230036, Anhui, People's Republic of China.
authors.forename: Lingyun
authors.initials: L
authors.lastname: Xu
authors.affiliation: College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, Jiangsu, People's Republic of China.
authors.forename: Guijie
authors.initials: G
authors.lastname: Chen
authors.affiliation: School of Tea & Food Science and Technology, Anhui Agricultural University/State Key Laboratory of Tea Plant Biology and Utilization, Hefei 230036, Anhui, People's Republic of China.
authors.forename: Chuanyi
authors.initials: C
authors.lastname: Peng
authors.affiliation: School of Tea & Food Science and Technology, Anhui Agricultural University/State Key Laboratory of Tea Plant Biology and Utilization, Hefei 230036, Anhui, People's Republic of China.
authors.forename: Huanhuan
authors.initials: H
authors.lastname: Qiao
authors.affiliation: School of Tea & Food Science and Technology, Anhui Agricultural University/State Key Laboratory of Tea Plant Biology and Utilization, Hefei 230036, Anhui, People's Republic of China.
authors.forename: Fei
authors.initials: F
authors.lastname: Ke
authors.affiliation: School of Tea & Food Science and Technology, Anhui Agricultural University/State Key Laboratory of Tea Plant Biology and Utilization, Hefei 230036, Anhui, People's Republic of China.
authors.forename: Ruyan
authors.initials: R
authors.lastname: Hou
authors.affiliation: School of Tea & Food Science and Technology, Anhui Agricultural University/State Key Laboratory of Tea Plant Biology and Utilization, Hefei 230036, Anhui, People's Republic of China.
authors.forename: Daxiang
authors.initials: D
authors.lastname: Li
authors.affiliation: School of Tea & Food Science and Technology, Anhui Agricultural University/State Key Laboratory of Tea Plant Biology and Utilization, Hefei 230036, Anhui, People's Republic of China. Electronic address: chm@ahau.edu.cn.
authors.forename: Huimei
authors.initials: H
authors.lastname: Cai
authors.affiliation: School of Tea & Food Science and Technology, Anhui Agricultural University/State Key Laboratory of Tea Plant Biology and Utilization, Hefei 230036, Anhui, People's Republic of China. Electronic address: xcwan@ahau.edu.cn.
authors.forename: Xiaochun
authors.initials: X
authors.lastname: Wan
mesh_terms: D000327:Adsorption; D060766:Drinking Water / Q000737:chemistry*; D005459:Fluorides / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008670:Metals / Q000737:chemistry*; D013213:Starch / Q000737:chemistry*; D018508:Water Purification
chemical_list: D060766:Drinking Water; D008670:Metals; D013213:Starch; D005459:Fluorides
keywords: Adsorption; Drinking water; Fluorine; Metal ions; Porous starch