Journal article
Salt Rejection of Non-Ionic Polymeric Membranes
A modified solution-diffusion model for the description of salt and water transport through homogeneous membranes is introduced. It is compared with the current solution-diffusion model and the combined flow-diffusion model for the description of transport under reverse osmosis conditions. The advantage of the modified description over the current solution-diffusion model is the inclusion of a salt-water coupling transport coefficient which allows the description to be extended to membranes of high water permeability (high water content).
The advantage of the modified solution-diffusion model over the combined flow- diffusion model is that coupling is not introduced by a separate ad hoc assumption on the form of the coupling term, but it is an integral part of the transport description arising from a consideration of what is to be understood by diffusion as opposed to viscous flow.
In applying the current and modified solution-diffusion models, extensive use is made of previously-published experimental data.
Language: | English |
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Year: | 1976 |
Pages: | 113-115 |
ISSN: | 18734464 and 00119164 |
Types: | Journal article |
DOI: | 10.1016/S0011-9164(00)84097-7 |