EFFECT OF TURBULENCE ON FILM PERMEABILITY IN CROSS-FLOW MEMBRANE FILTRATION

被引：6

作者：

COHEN, RD

机构：

[1] Department of Mechanical Engineering and Materials Science, Rice University, Houston

来源：

JOURNAL OF MEMBRANE SCIENCE | 1990年 / 48卷 / 2-3期

关键词：

D O I：

10.1016/0376-7388(90)85015-D

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A previously developed model for the laminar cross-flow membrane filtration of coagulating particulate suspensions is extended to account for turbulence. This is made possible by utilizing certain existing semi-empirical expressions for turbulence induced coagulation rates in pipe flow and applying them to the present model. One of the important results obtained here is that in certain situations turbulence induced coagulation has a significant impact on the filter cake structure, and thereby on the flux decline rate. In such cases, therefore, in addition to the influence of turbulence induced diffusivity at the cake-solution interface on cake growth rate (and consequently on the flux decline rate), the effects of coagulation caused by turbulence must also be considered. © 1990.

引用

页码：343 / 347

页数：5

共 7 条

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[2] INVESTIGATION OF THE EFFECT OF SOLUTION DESTABILIZATION ON FLUX ENHANCEMENT IN FILTRATION [J].