Abstract
We evaluated the filtration performance of microporous metal membranes fabricated by the rolling process. Metal wire meshes were rolled with thickness reduction ratios of 10, 20, and 30%. The pore size of the metal wire mesh membrane decreased with increasing rolling ratio, whereas the removal efficiency of the suspended solids and turbidity showed a very slight increase compared to that of an unrolled mesh membrane. The metal powder was dispersed on the surface of the rolled metal wire mesh membrane and bound with polyvinyl alcohol, then dried at 100°C for 1 h, and finally sintered at 1,000°C for 3 h. The mean pore size, suspended solids, and turbidity of the metal powder membrane at a rolling ratio of 30% were approximately 0.7 μm, 84% and 83%, respectively. Therefore, microporous metal membranes successfully fabricated by the rolling process were also sufficiently permeable filters.
Highlights
Jiyeong Park No-Suk Park Department of Civil Engineering and EngineeringResearch Institute, Gyeongsang National University, 501 Jinju-daero, Jinju [660-701], KoreaSeok-Hong Min Department of Metal and Materials Engineering, Gangneung-Wonju National University, 7 Jukheon-gil, Gangneung [210-702], KoreaHyung-Soo Kim Graduate School of Water Resources, Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do [440-746], KoreaWon-Hee Lee Jong-Oh Kim Department of Civil and EnvironmentalWater conservation and reuse are major issues in groundwater management, desertification, and climate change
Metal porous filters are made of sintered metal powders, metal wire mesh, and metal fibers as foundation, can withstand pressures up to 1 MPa and temperatures up to 350 W C, and are resistant to oxidation
We evaluated the fabrication and filtration performance of microporous metal membranes fabricated by the rolling process
Summary
Seok-Hong Min Department of Metal and Materials Engineering, Gangneung-Wonju National University, 7 Jukheon-gil, Gangneung [210-702], Korea. Hyung-Soo Kim Graduate School of Water Resources, Sungkyunkwan University, Jangan-gu, Suwon, Gyeonggi-do [440-746], Korea. Metal porous filters are made of sintered metal powders, metal wire mesh, and metal fibers as foundation, can withstand pressures up to 1 MPa and temperatures up to 350 W C, and are resistant to oxidation. Metal porous filters are sturdy and have constant permeability, high corrosion resistance, and high thermal stability. Metal membranes have numerous applications in the chemical, electrical and power, environmental, and pharmaceutical industries (Snow et al ; Kim et al ; Herrmann & Morgan )
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