title: Phosphate filtering characteristics of a hybridized porous Al alloy prepared by surface modification.
abstract: In this study, a porous Al alloy filter was designed for water purification systems. The combination of higher permeability for fluid flow and excellent filtering characteristics for removing pollutants is required for water purification. The filter's macropore structure was controlled by a powder metallurgical process using granulated powders for high permeability and its micropore structure was generated by alkali surface modification on the macroporous sintered body for enhanced filtration efficiency. After surface modification, the specific surface area was increased by 10 times over the as-sintered specimen. Phosphate filtering characteristic was noticeably improved by a ligand exchange between phosphate and aluminum hydroxide formed by alkali surface modification.
authors.affiliation: Division of Materials Science and Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea.
authors.forename: Young Ik
authors.initials: YI
authors.lastname: Seo
authors.forename: Young Jung
authors.initials: YJ
authors.lastname: Lee
authors.forename: Ki Ho
authors.initials: KH
authors.lastname: Hong
authors.forename: Duk
authors.initials: D
authors.lastname: Chang
authors.forename: Dae-Gun
authors.initials: DG
authors.lastname: Kim
authors.forename: Kyu Hwan
authors.initials: KH
authors.lastname: Lee
authors.forename: Young Do
authors.initials: YD
authors.lastname: Kim
mesh_terms: D000497:Alloys / Q000737:chemistry*; D000535:Aluminum / Q000737:chemistry*; D005374:Filtration; D008855:Microscopy, Electron, Scanning; D010316:Particle Size; D010710:Phosphates / Q000737:chemistry*; D016062:Porosity; D013499:Surface Properties; D014865:Waste Disposal, Fluid / Q000379:methods; D018508:Water Purification / Q000379:methods
chemical_list: D000497:Alloys; D010710:Phosphates; D000535:Aluminum