Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Fabrication of Boehmite-based UF Ceramic Membrane

베마이트를 이용한 UF 세라믹 분리막의 제조

  • Wi, In-Hee (Icheon Branch, Korea Institute of Ceramic Engineering and Technology) ;
  • Shin, Dong-Wook (Division of Materials Science and Engineering, Hanyang University) ;
  • Han, Kyu-Sung (Icheon Branch, Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Jin-Ho (Icheon Branch, Korea Institute of Ceramic Engineering and Technology) ;
  • Cho, Woo-Seok (Icheon Branch, Korea Institute of Ceramic Engineering and Technology) ;
  • Hwang, Kwang-Taek (Icheon Branch, Korea Institute of Ceramic Engineering and Technology)
  • 위인희 (한국세라믹기술원 이천분원) ;
  • 신동욱 (한양대학교 신소재공학과) ;
  • 한규성 (한국세라믹기술원 이천분원) ;
  • 김진호 (한국세라믹기술원 이천분원) ;
  • 조우석 (한국세라믹기술원 이천분원) ;
  • 황광택 (한국세라믹기술원 이천분원)
  • Received : 2014.04.12
  • Accepted : 2014.06.10
  • Published : 2014.07.31
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Abstract

A single layer ultrafiltration(UF) ceramic membrane was prepared using boehmite sol. Boehmite was synthesized using a typical sol-gel process with optimization of the viscosity, pH, molar ratio of aluminum isopropoxide(AIP) and $HNO_3$. Boehmite sol was coated on a microfiltration(MF) support using the dip-coating method. MF support was dipped into the boehmite sol with a withdrawal speed of 5 mm/s and was maintained for 10 s in the boehmite sol, resulting in a uniform UF membrane layer of $10{\mu}m$ thickness. The porosity of the obtained membrane was measured and found to be 41.2%; the pore size was found to range from 80~100 nm, corresponding to the pore size of the UF membrane. The flux of the obtained membrane was initially 540 $L/m^2h$ and approximately 85% of the initial flux was recovered using a periodic back-flushing process.

Keywords

References

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