Prediction of the rate of cross-flow membrane ultrafiltration: A colloidal interaction approach

被引:57
作者
Bowen, WR
Mongruel, A
Williams, PM
机构
[1] Biochemical Engineering Group, Department of Chemical Engineering, University of Wales, Swansea
[2] Lab. de Genie Chim. des Mileux C., ENSIC, F-54001, Nancy Cédex, 1, rue Grandville
关键词
D O I
10.1016/0009-2509(96)83770-5
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The influence of the physicochemical conditions on permeation rate in cross-flow ultrafiltration of colloidal suspension is investigated. A model is developed using simple hydrodynamics for the flow in a rectangular channel with one porous wall, but focusing on a detailed description of the dependence of both osmotic pressure and gradient diffusion coefficient on concentration and physicochemical parameters. The analysis is based on a fundamental calculation of colloidal interactions between particles expressed in terms of osmotic pressure. The osmotic pressure modelling accounts for multiparticle electrostatic interactions, dispersion forces and configurational entropy effects. The osmotic pressure is further used in the calculation of the gradient diffusion coefficient from the generalized Stokes-Einstein equation. The cross-flow ultrafiltration model yields an a priori prediction (with no adjustable parameters) for the filtration rate of colloids at various operating conditions (applied pressure, cross-flow rate, membrane resistance) as a function of particle size, zeta potential or surface charge, and ionic strength. Model predictions are compared to experimental filtration data for the protein bovine serum albumin (BSA). Copyright (C) 1996 Elsevier Science Ltd
引用
收藏
页码:4321 / 4333
页数:13
相关论文
共 31 条
[1]   VISCOSITY RENORMALIZATION IN COLLOIDAL SUSPENSIONS [J].
ALLAIN, C ;
CLOITRE, M ;
LACOSTE, B ;
MARSONE, I .
JOURNAL OF CHEMICAL PHYSICS, 1994, 100 (06) :4537-4542
[2]   DISPERSION-EQUATION AND POLARIZABILITY OF BOVINE SERUM-ALBUMIN FROM MEASUREMENTS OF REFRACTIVE-INDEXES [J].
ANDERSEN, M ;
PAINTER, LR ;
NIR, S .
BIOPOLYMERS, 1974, 13 (06) :1261-1267
[3]   PARTICLE DIFFUSION AS A FUNCTION OF CONCENTRATION AND IONIC-STRENGTH [J].
ANDERSON, JL ;
RAUH, F ;
MORALES, A .
JOURNAL OF PHYSICAL CHEMISTRY, 1978, 82 (05) :608-616
[4]  
[Anonymous], PROG SURF SCI
[5]   BROWNIAN DIFFUSION OF PARTICLES WITH HYDRODYNAMIC INTERACTION [J].
BATCHELOR, GK .
JOURNAL OF FLUID MECHANICS, 1976, 74 (MAR9) :1-29
[6]   LAMINAR FLOW IN CHANNELS WITH POROUS WALLS [J].
BERMAN, AS .
JOURNAL OF APPLIED PHYSICS, 1953, 24 (09) :1232-1235
[7]  
BOCKRIS JO, 1970, MODERN ELECTROCHEMIS, V1, pCH2
[8]   THE CALCULATION OF DISPERSION FORCES FOR ENGINEERING APPLICATIONS [J].
BOWEN, WR ;
JENNER, F .
ADVANCES IN COLLOID AND INTERFACE SCIENCE, 1995, 56 :201-243
[9]   DYNAMIC ULTRAFILTRATION MODEL FOR CHARGED COLLOIDAL DISPERSIONS - A WIGNER-SEITZ CELL APPROACH [J].
BOWEN, WR ;
JENNER, F .
CHEMICAL ENGINEERING SCIENCE, 1995, 50 (11) :1707-1736
[10]   ELECTROVISCOUS EFFECTS IN CHARGED CAPILLARIES [J].
BOWEN, WR ;
JENNER, F .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1995, 173 (02) :388-395