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Ion transport

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... pH, which increases with the external solution pH and dilution of the external solution. When the intrinsic pH is high, the amount of the free OH! ions in strongly basic membranes with quaternary ammonium groups may be great enough to give a noticeable contribution to the current transfer. This... AMX, ACS and ACM produced by Tokuyama Soda (Japan), Anion 204SZRA by Ionics (USA), ADP by Morgan (France) and MA-40, MA-41 by Schekino (Russia). Transport properties of these membranes are interpreted as functions of the internal solution pH. The mechanism of (hydro)carbonates transfer through AEM ...
Desalination 147 (2002)

The removal of nitrate ions through SB-6407 and Neosepta AMX anion exchange membranes has been studied under Donnan dialysis conditions as a function of receiver phase... conditions as a function of receiver phase concentration and co-existence anions in the feed phase. For both membranes, it was observed that the transport of nitrate increased with increase of the receiver phase concentration and decreased in the presence of co-existence anions in feed phase. It wa ...
Desalination 239 (2009)

... the concentration of formic, acetic and propionic acid solutions under different experimental conditions. In this process interpolymer-type ion-exchange membranes were used due their high chemical stability and durability. The effects of concentration, electric current and time on the... effects of concentration, electric current and time on the electrodialysis process were studied. A mathematical equation representing the water transport behavior of the electrodialysis process for concentrating acids under the influence of different current densities was developed. This equatio ...
Desalination 171 (2004)

A review of works resulting in development of a hierarchic system of mathematical models is presented. Different scales of ion transport are considered: 1) in the membrane, where two approaches are used, the irreversible thermodynamics and modelling of the membrane material ...
Desalination 147 (2002)

... results in convergence of solute flux and mass transfer coefficient values close to and at steady state. Keywords: Montmorillonite; Membrane; Ion transport 0011-9164/09/$– See front matter © 2009 Elsevier B.V. All rights reserve ...
Desalination 239 (2009)

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