Title

Incorporation of osmotic pressure in an integrated incremental model for predicting RO or NF permeate concentration

Authors

Authors

Y. Zhao;J. S. Taylor

Comments

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Abbreviated Journal Title

Desalination

Keywords

osmotic pressure; reverse osmosis; nanofiltration; solution diffusion; mass transfer; MEMBRANE; NANOFILTRATION; WATER; Engineering, Chemical; Water Resources

Abstract

Consideration of concentration, recovery and osmotic pressure has been incorporated in a fully integrated diffusion based mass transfer model identified as integrated osmotic pressure model (IOPM). Osmotic pressure was incorporated into the model using correction coefficients that were calculated from boundary conditions, which were determined from the feed and concentrate streams osmotic pressures. Predicted permeate stream water quality using IOPM and the homogenous solution diffusion model (HSDM) were compared with and without consideration of osmotic pressure. IOPM was verified using independently developed data from full and pilot scale plants. The numerical simulation and statistical assessment show that osmotic pressure corrected models are superior to non-osmotic pressure corrected models, and that IOPM improved predictability of permeate stream water quality.

Journal Title

Desalination

Volume

174

Issue/Number

2

Publication Date

1-1-2005

Document Type

Article

Language

English

First Page

145

Last Page

159

WOS Identifier

WOS:000228949700004

ISSN

0011-9164

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