Phosphate filtering characteristics of a hybridized porous Al alloy prepared by surface modification.
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.
Seo
Young Ik
YI
Division of Materials Science and Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea.
Lee
Young Jung
YJ
Hong
Ki Ho
KH
Chang
Duk
D
Kim
Dae-Gun
DG
Lee
Kyu Hwan
KH
Kim
Young Do
YD
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
D000497:Alloys; D010710:Phosphates; D000535:Aluminum