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The deduction of fine structural details of reverse osmosis hollow fiber membranes using surface force-pore flow model

Idris, Ani and Ismail, Ahmad Fauzi and Shilton, Simon J. and Rashid, Roslina and Musa, M. (2002) The deduction of fine structural details of reverse osmosis hollow fiber membranes using surface force-pore flow model. Separation and Purification Technology, 29 (3). pp. 217-227. ISSN 1383-5866

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Official URL: http://dx.doi.org/10.1016/S1383-5866(02)00081-3

Abstract

In order to elucidate the relationship between the dope extrusion shear rate and membrane performance, sodium chloride transfer through the asymmetric cellulose acetate reverse osmosis hollow fiber membranes is modeled, allowing fine details of the fiber structure to be deduced from the NaCl–H2O rejection characteristics. The structural information such as the pore size radius and skin thickness of the active layer deduced from the sodium chloride separation experimental data and surface force–pore flow model (SF–PF) is then used to interpret the relationship between the rheological conditions during spinning and membrane performance. The modeling results revealed that increased extrusion shear rate would decrease both pore size and thickness of the active layer, thus increasing the separation performance of the RO hollow fiber membranes.

Item Type:Article
Uncontrolled Keywords:Spinning rheology, reverse osmosis, hollow fiber, molecular orientation, skin and structure
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:7546
Deposited By: Norhafizah Hussin
Deposited On:08 Jan 2009 07:08
Last Modified:01 Jun 2010 15:53

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