Modeling of reverse osmosis in the presence of strong solute-membrane affinity

Journal Article · Mon Mar 01 00:00:00 EST 1993 · AIChE Journal (American Institute of Chemical Engineers); (United States)

DOI:https://doi.org/10.1002/aic.690390307· OSTI ID:6240733

Mehdizadeh, H; Dickson, J M ^[1]

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1. McMaster Univ., Hamilton, Ontario (Canada)

Modeling of reverse osmosis in the presence of strong solute-membrane affinity has always been a challenge due to the complexity of the solute-solvent-membrane interactions and the resultant effect on membrane performance. Most transport models, including all models treating membranes as nonporous and those based on irreversible thermodynamics, are unable to describe or to predict all of the phenomena associated with this case. Recently, the modified surface force-pore flow model has been derived and used to describe the performance of reverse osmosis membranes for solutes which are rejected from the membrane. In the present work, this model is extended to a more general form which can describe the solute-membrane affinity case. For illustration, the extended model, with five adjustable parameters, is used to describe the performance for cellulose acetate membranes and dilute aqueous solutions of toluene, cumene, and p-chlorophenol (data from literature). The model is reasonably consistent with the data. Simulation results of the extended model are also shown.

• OSTI ID: 6240733
• Journal Information: AIChE Journal (American Institute of Chemical Engineers); (United States), Vol. 39:3; ISSN 0001-1541
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
CUMENE
OSMOSIS
MEMBRANE TRANSPORT
MATHEMATICAL MODELS
PHENOLS
TOLUENE
ACETATES
CELLULOSE
COMPARATIVE EVALUATIONS
MEMBRANES
PERFORMANCE
ALKYLATED AROMATICS
AROMATICS
CARBOHYDRATES
CARBOXYLIC ACID SALTS
DIFFUSION
EVALUATION
HYDROCARBONS
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
POLYSACCHARIDES
SACCHARIDES
540220* - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)
320305 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management