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J. Korean Ceram. Soc. > Volume 33(6); 1996 > Article
Journal of the Korean Ceramic Society 1996;33(6): 700.
$TiO_2$ 정밀여과막의 제조 및 특성
한상욱, 최세영, 현상훈, 조철구1, 강한규2
연세대학교 세라믹공학과
1유동기업 (주) 부설연구소
2유동기업 (주)부설연구소
Preparation and Characterization of $TiO_2$ Membranes for Microfiltration
TiO2 membranes for microfiltration were prepared on $alpha$-alumina support tube by slurry coating. The coating layer was obtained by flowing TiO2 slip on the inner surface of the alumina support. TiO2 membranes were heat-treated at 9$25^{circ}C$ for 2 hrs. The thickness of the unsupported membrane was about 10${mu}{textrm}{m}$. The mean pore diameter of the membranes were 0.09 and 0.15${mu}{textrm}{m}$ respectively and the pure water flux was 900~1,200ι/m2.hr at room temperature and 1 bar. For a possible application of oily wastewater treatement an kerosene/wa-ter emulsion was separated in terms of flux and removal efficiency. In 60 min of operating time the flux of TiO2 membranes was 50~100 ι/m2.hr and removal efficiency was over 97% at 3kgf/cm2 of operating pres-sure and 600 ml/min of flow rate. TiO2 membranes could be recycled by reheat treatments at $600^{circ}C$ for 2 hrs.
Key words: $TiO_2$ membrane, Microfiltration, Slurry coating, Wastewater treatment
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