Characterization and Microstructure of an Extruded Flat-Tubular-Type Alumina Filter

압출공정에 의한 수 처리용 평관형알루미나 필터의 미세구조와 특성평가

  • Bae, Byung-Seo (Engineering Ceramics Department, Korea Institute of Materials Science) ;
  • Ha, Jang-Hoon (Engineering Ceramics Department, Korea Institute of Materials Science) ;
  • Song, In-Hyuck (Engineering Ceramics Department, Korea Institute of Materials Science)
  • 배병서 (한국기계연구원 부설 재료연구소) ;
  • 하장훈 (한국기계연구원 부설 재료연구소) ;
  • 송인혁 (한국기계연구원 부설 재료연구소)
  • Received : 2014.08.18
  • Accepted : 2014.09.06
  • Published : 2014.09.30


In this study, flat-tubular-type alumina filters were manufactured using alumina powder of two sizes ($2.4{\mu}m$ ALM-44 and $0.4{\mu}m$ AP 400) by an extrusion process. The manufactured alumina filter was sintered at $1200-1600^{\circ}C$ for 1 h. As particle size increased, the largest pore size, average pore size and porosity increased; but density and linear shrinkage decreased. The alumina filter fabricated using ALM-44 powder sintered at $1500^{\circ}C$ was confirmed as the best water treatment filter after investigation of the bending strength, water permeability and impurity-removal efficiency of the experimental filters. This flat-tubular-type alumina filter is expected to be useful not only for direct water treatment, but also for use as a support filter during coating processes, to control pore size.


Supported by : 한국기계연구원


  1. I. H. Song, J. H. Ha, B. S. Bae, Y. J. Park, J. W. Ko, Y. K. Baek, Y. K. Kim. J. G. Lee, and Y. D. Hahn, "Research Trend of Ceramic Filter for Water Treatment," J. Kor. Powd. Met. Inst., 21 [1], 62-71 (2014).
  2. S. W. Han, S. Y. Choi, S. H. Hyun, C. G. Jo, and H. G. Kang, "Preparetion and Characterization of $TiO_2$ Membranes for Microfiltration(in Korean)," J. Kor. Ceram. Soc., 33 [6], 700-08 (1996).
  3. K. Toyomoto and A. Higuchi, Microfiltration and Ultratiltration; pp. 289-332, Membrane Science and Technology, Ed. By Yoshihito Osada et al., Dekker Marcel, New York, 1991.
  4. R. R. Bhave, Inorganic Membrane; Synthesis, Characteristics and Application; pp. 95-154, Van Nostrand Reinhold, New York, 1991.
  5. S. H. Hyun, "Present State and Preparation Technology of Ceramic Membranes," Membrane J., 3 [1], 1 (1993).
  6. M. Cheryan, Ultrafiltration Handbook; pp. 7-25, Technomic Publishing Company, Lancaster, PA, 1986.
  7. J. N. Armor, Challenges in Membrane Catalysis; pp. 557-63, Chem. Thch., 1992.
  8. G. Oza, S. Pandey, A. Gupta, S. Shinde, A. Mewada, P. Jagadale, M. Sharon, and M. Sharon, "Photocatalysis-assisted Water Filtration: Using $TiO_2$-coated Vertically Aligned Multi-walled Carbon Nanotube Array for Removal of Escherichia Coli O157:H7," Mater. Sci. Eng. C Mater. Biol. Appl., 33 [7], 4392-400 (2013).
  9. C. Voigt, E. Jackel, C. G. Anezirisa, and J. Hubaalkova, "Investigations of Reticulated Porous Alumina Foam Ceramics Based on Different Coating Techniques with the Aid of ${\mu}$CT and Statistical Characteristics," Ceram. Int, 39, 2415-22 (2013).
  10. O. San and A. Imaretli, "Preparation and Filtration Testing of Diatomite Filtering Layer by Acid Leaching," Ceram. Int., 37, 73-8 (2011).
  11. Q. Chang, J. Zhou, Y. Wang, J. Wang, and G. Meng, "Hydrophilic Modification of $Al_2O_3$ Microfiltration Membrane with Nano-sized ${\gamma}-Al_2O_3$ Coating," Desalination, 262, 110-14 (2010).
  12. T. Isobe, Y. Kameshima, A. Nakajima, K. Okada, and Y. Hotta, "Extrusion Method Using Nylon 66 Fibers for the Preparation of Porous Alumina Ceramics with Oriented Pores," J. Eur. Ceram. Soc., 26, 2213-17 (2006).
  13. ASTM International, "Standard Test Method for Flexural Strength of Advanced Ceramics with Engineered Porosity (Honeycomb Cellular Channels) at Ambient Temperatures," pp. 1-26, Annual Book of ASTM Standards, Philadelphia, 2011.

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