A Simplified intrinsic rejection coefficient model for capillary hollow fibers

Determining the intrinsic rejection coefficient ( R) of capillary hollow fibers is complicated by the need to measure local wall and bulk concentrations. Instead, the observed rejection coefficient ( R obs) is a readily accessible quantity which can be related to R via boundary layer theory, allowin...

Full description

Saved in:
Bibliographic Details
Published in:Journal of membrane science 1990-04, Vol.49 (3), p.241-252
Main Author: El-Kalay, M.A.
Format: Article
Language:English
Subjects:
Analytical biochemistry: general aspects, technics, instrumentation
Analytical, structural and metabolic biochemistry
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Determining the intrinsic rejection coefficient ( R) of capillary hollow fibers is complicated by the need to measure local wall and bulk concentrations. Instead, the observed rejection coefficient ( R obs) is a readily accessible quantity which can be related to R via boundary layer theory, allowing the determination of R. Such mathematical analysis has been previously suggested but involves laborious numerical trial and error techniques. However, the second-order differential equation that describes the convective mass transfer process can be simplified by ignoring the radial velocity component on the basis that the solvent permeation flux is small. This results in significant simplifications to the R model, and yields a simple but accurate analytical solution for R.
ISSN:0376-7388
1873-3123
DOI:10.1016/S0376-7388(00)80642-0