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Title: | Reverse osmosis of ammonium and sodium salt solutions and its model description | Authors: | Koter, Stanilaw Foamete, Veronica Ionela Constantin, Mirela Alina Koter, Izabela |
Keywords: | Reverse osmosis;Ammonium salts;Dielectric exclusion;Nernst–Planck equation | Issue Date: | 2018 | Publisher: | 2018 Desalination Publications | Abstract: | The tested models of membrane transport were based on the steric, dielectric (Born and image force effects), and Donnan exclusions. Generally, the models with the concentration-dependent electrolyte permeability described the retention data satisfactorily, irrespectively of the origin of that dependence (dielectric or Donnan effect). Regarding the steric-dielectric exclusion, the same goodness of fit was obtained for many pairs of pore radius and dielectric constant. However, it was not possible to explain the differences in the electrolyte permeabilities, because of the inconsistency of the dielectric constant of a pore solution and/or an effective membrane thickness. Much too high values of that thickness obtained for the pure Donnan exclusion indicated that this type of exclusion was of marginal importance. |
Description: | Desalination and Water Treatment, vol. 128, pp. 155-169, 2018 |
URI: | http://hdl.handle.net/123456789/1295 | ISSN: | 1944-3994/1944-3986 |
Appears in Collections: | Articles |
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2018_128 SK et al - Reverse osmosis of ammonium and sodium salt solutions and its model description (1).pdf | 760.26 kB | Adobe PDF | Request a copy |
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