Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Development of Membrane Filters with Nanostructured Porous Layer by Coating of Metal Nanoparticles Sintered onto a Micro-Filter

마이크로-필터 상에 소결 처리된 금속 나노입자 코팅에 의한 나노구조 기공층 멤브레인 필터 개발

  • 이동근 (충남대학교 대학원 기계공학과) ;
  • 박석주 (한국에너지기술연구원 청정석탄연구센터) ;
  • 박영옥 (한국에너지기술연구원 청정석탄연구센터) ;
  • 류정인 (충남대학교 기계공학과)
  • Published : 2008.08.01
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Abstract

The membrane filter adhered with nanostructured porous layer was made by heat treatment after deposition of nanoparticle-agglomerates sintered in aerosol phase onto a conventional micron-fibrous metal filter as a substrate filter. The Sintered-Nanoparticle-Agglomerates-coated NanoStructured porous layer Membrane Filter (SNA-NSMF), whose the filtration performance was improved compared with the conventional metal membrane filters, was developed by adhesion of nanoparticle-agglomerates of dendrite structure sintered onto the micron-fibrous metal filter. The size of nanoparticle-agglomerates of dendrite structure decreased with increasing the sintering temperature because nanoparticle-agglomerates shrank. When shrinking nanoparticle-agglomerates were deposited and treated with heat onto the conventional micron-fibrous metal filter, pore size of nanostructured porous layer decreased. Therefore, pressure drops of SNA-NSMFs increased from 0.3 to 0.516 kPa and filtration efficiencies remarkably increased from 95.612 to 99.9993%.

Keywords

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