TRANSPORT PHENOMENA IN ULTRAFILTRATION - MEMBRANE SELECTIVITY AND BOUNDARY-LAYER PHENOMENA

被引：26

作者：

JONSSON, G

机构：

[1] Technical Univ of Denmark, Lyngby, Den, Technical Univ of Denmark, Lyngby, Den

来源：

PURE AND APPLIED CHEMISTRY | 1986年 / 58卷 / 12期

关键词：

FLOW OF FLUIDS - Boundary Layer - MEMBRANES - Mass Transfer;

D O I：

10.1351/pac198658121647

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Retention characteristics of UF membranes are delineated through comparison of the combined viscous flow and frictional model with the Ferry-Faxen equation. The molecular weight cut-off concept is discussed using calculations of how sharp cut-off curves one can expect of UF membranes with uniform pore sizes and how heteroporosity will affect such curves. Experimental retention-flux curves for different macromolecules have been measured. From these data the molecular weight cut-off curves at varying pressure levels can be determined and by comparing with the model an average pore radius can be calculated.

引用

页码：1647 / &