Sol-Gel 법으로 제조한 알루미나 담체의 $TiO_2$ 복합 한외여과막의 특성

Characteristics of Alumina-Supported TiO2 Composite Ultrafiltration Membranes Prepared by the Sol-Gel Method

  • 현상훈 (연세대학교 세라믹공학과) ;
  • 최영민 (연세대학교 세라믹공학과)
  • 발행 : 1992.02.01


Alumina supports for TiO2 ultrafiltration membrane coating were prepared by presintering disk-type preforms at 140$0^{\circ}C$. These supports showed uniform microstructures which had the apparent porosity of 40%, the pore size distribution in the range of 0.1~0.5${\mu}{\textrm}{m}$, and the water flux of 1400ι/$m^2$.h at the pressure difference of 10 atm. The optimum pH and concentration of the TiO2 sol for coating were 0.8 and 1.0 wt%, respectively, and sol particles were identified as rutile forms of 20 nm size. Crack-free alumina-supported rutile TiO2 membranes could be prepared through well controlled drying and heating the gel layer coated by the sol-gel dipping. The pore size of the TiO2 membranes heat-treated at 50$0^{\circ}C$ for 2 hrs was 30~80$\AA$, and their thickness varied from 1.1 to 3.8 ${\mu}{\textrm}{m}$ in accordence with the dipping time (4~40 min). The flux of water through this composite membrane at 10 atm was found to be in the range from 800 to 1100ι/$m^2$.hr depending on the dipping time (10~40 min). The membrane thickness increased linearly with the square root of the dipping time and the slope was 0.62 ${\mu}{\textrm}{m}$/{{{{ SQRT { min} }}.



  1. J. Membrane Sci v.10 The Growth of Membrane Technology H.K.Lonsdale
  2. Ultrastructure Processing of Advanced Ceramics Ultrafilters by the Sol-Gel Process L. Cot;A. Larbot;C. Guizard;John D. Mackenzie(ed.)
  3. Membrane Separation Process P. Meares(ed.)
  4. J. Membrane Sci. v.39 Titania and Alumina Ceramic Membranes M.A. Anderson;M.J. Gieselmann;Q. Xu
  5. Desah-nation v.56 Membrane Separations Technology for Industrial Effluent Treatment-A Review P.S. Cartwright
  6. Power v.130 Crossflow Membrane Filtration expands Role in Water Treatment G J. Gach
  7. Food Technol v.38 Crossflow Microfiltration Technology and Its Applications DJ. Paulson;R.L. Wilson;D.D. Spatz
  8. Desalination v.53 Crossflow Microfiltration in the Process Industry T J. Van Gassel;S. Ripperger
  9. Am. Chem. Soc. Materials Science of Synthetic Membrane D.R. Lloyd(ed.)
  10. J. of Membrane Sci. v.40 Mass Transfer in Corrugated-Plate Memberane Modules. I. Hyperfiltration Experiments M.J. Vander Waal;L.G. Racz
  11. J. Membrane Sci. v.39 Special Issue on Ceramic Membranes R.L. Goldsmith
  12. J. Korea Ceram Soc. v.25 no.1 Preparation of Porous Glass Membranes by the Phase-Separation Technique S.H. Hyrn;B.H. Choi
  13. J. Koream Ceram Soc. v.23 no.5 Preparation of Microporous Glasses by the Phase-Separation Techniuque and Their Salt-Rejection Characteristics S H Hyun;G.T. Kim
  14. UK Patent Application v.GB 2 Porous Mullite T.R. Jones;C.Gould
  15. J. Non-Cryst. Solids v.63 Generation of SiO₂-Membranes from Alkoxysilanes on Porous Supports A Kaiser.;H. Schmidt
  16. Le Lait v.64 Crossflow Microfiltration and Backflushing on Ceramic Membrane S. Galari;A. Wicker;J.P. Dumas;J. Gillot;D. Garcera
  17. J. Korean Ceram. Soc. v.25 no.3 Preparation of Al₂O₃-ZrO₂ Composite Powers by the Use of Emulsion :Ⅱ Emulsion Hot Kerosene Drying Method S.H. Hyun;J.K. Paik
  18. J. Am. Ceram. Soc. v.65 no.12 Formation, Packing, and Sintering of Monodisperse TiO₂Powders E.A. Barringer;H.K. Bowen
  19. J. Mater. Sci. v.19 The Preparation and Characterization of Alumina Membranes with Ultra-Fine Pores Part 1 : Microstructural Investigations on Non-Supported Membranes A.F.M. Leenaars;K. Keizer;AJ. Burggraaf
  20. Can. J. Chem. v.36 K. Graham;L C. Madeley
  21. Australian J. Chem. v.10 P.G. Johnasen;A.S. Buchanan
  22. J. Cooouid Interface Sci. v.105 no.1 The Preparation and Characterization of Alumina Membranes with Ultrafine Pores Part 2 : The formation of Supported Membranes A.F.M. Leenaars;AJ. Burggraaf
  23. The Properties of Gasses and Liquids R.C. Reid;J.M. Prausnitz;T.K. Sherwood
  24. J. Membrane Sci. v.24 The Preparaion and Characterization of Alumina Membranes with Ultra-Fine Pores. Part 3 : The Permeability for Pure Liquids A.F.M. Leenaars;AJ. Burggraaf
  25. J. Membrane Sci. v.24 The Preparation and Characterization of Alumina Membranes with Ultra-Fine Pores. Part 4 : Ultrafitration and Hyperfiltration Experiments A.F.M. Leenaars;K. Keizer;A.J. Burggraaf
  26. J. Membrane Sci. v.39 Inorganic Membranes Obtamed by Sol-Gel Techniques A. Larbot;J.P. Farbe;C. Guizard;L. Cot