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회전막을 이용한 동역학적 정밀여과의 특성
Characteristics of Dynamic Microfiltration using Rotating Membrane
HWAHAK KONGHAK, June 1992, 30(3), 268-276(9), NONE
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Abstract
본 연구에서는 Taylor 와류를 이용하는 동역학적 여과기의 특성을 조사하였다. 실리카 슬러리에 대한 여과 실험을 하고, 여과 특성을 과도기와 준정상 상태로 구분하여, 투과선속에 대한 Taylor 수와 막 여과기의 회전 속도와의 상관관계를 살펴보았다. 그 결과, 과도기에서 여과부피에 대한 투과선 속의 초기 변화율은 Taylor수에 선형적으로 감소하는 경향을 보았으나, 준정상 상태에서의 투과선속을 막의 회전속도에 선형적으로 증가하느 경향을 나타내었다. 실험결과를 근거로 관련된 여과특성을 대변할 실험식들을 제시하였다.
In this study characteristics of dynamic filters using Taylor vortices are investigated. Filtration experiments are conducted with silica slurry and filtrate fluxes are analysed on the basis of the Taylor number and the rotational velocity of the membrane filter by dividing them into two regions; the transient state and the pseudosteady state. During the transient period the initial variation of the filtrate flux to filtrate volume is found to decrease linearly with increasing the Taylor number, while the filtrate flux at the pseudosteady state is found to increase linearly with increasing the rotational velocity of membrane. Based on these results, empirical correlations to represent filtration characteristics are provided.
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Murase T, Iritani E, Chidphong P, Kano K, Kag. Kog. Ronbunshu, 15, 1179 (1989)
Cooney CL, Holeschovsky U, Agarwal G, Proc. 2nd Int. Biotech. Conf., Seoul, 33 (1990)
Ruth BF, Ind. Eng. Chem., 25, 153 (1933)
Atsumi K, Makino T, Kato K, Murase T, Iritani E, Chidphong P, Shirato M, Kag. Kog. Ronbunshu, 14, 14 (1988)
Ito R, Hamazaki S, Morishinge A, Kag. Kog. Ronbunshu, 8, 351 (1982)
Kataoka K, "Encyclopedia of Fluid Mechanics," (ed. by N.P. Cheremisinoff), Vol. 1, Gulf Pub., Houston (1985)
Schweitzer PA, "Handbook of Separation Techniques for Chemical Engineers," 2nd Ed., McGraw-Hill, New York (1988)
