Phosphate filtering characteristics of a hybridized porous Al alloy prepared by surface modification

Title
Phosphate filtering characteristics of a hybridized porous Al alloy prepared by surface modification
Authors
서영익Young Jung LeeKi Ho HongDuk ChangDae-Gun Kim이규환Young Do Kim
Keywords
Pore structure control; Alkali surface modification; Permeability; Filtration; Phosphorus removal
Issue Date
2010-01
Publisher
Journal of hazardous materials
Citation
VOL 173, NO 1-3, 789-793
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.
URI
http://pubs.kist.re.kr/handle/201004/36066
ISSN
0304-3894
Appears in Collections:
KIST Publication > Article
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