Exploració per autor "Yaroshchuk, Andriy"
Ara es mostren els items 16-31 de 31
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Fundamentals of selective ion transport through multilayer polyelectrolyte membranes
(2013-01-14)
Article
Accés restringit per política de l'editorialMembranes composed of multilayer poly(4-styrenesul- fonate) (PSS)/protonated poly(allylamine) (PAH) fi lms on porous alumina supports exhibit high monovalent/divalent cation selectivities. Remarkably, the di ff usion ... -
Hydrodynamic dispersion in long microchannels under conditions of electroosmotic circulation: II. Electrolytes
(2016-03-19)
Article
Accés obertThis work describes the steady-state transport of an electrolyte due to a stationary concentration difference in straight long channels under conditions of electroosmotic circulation. The electroosmotic flow is induced due ... -
Implications of inhomogeneous distribution of concentration polarization for interpretation of pressure-driven
(2016-08-22)
Article
Accés obertA number of CFD studies have demonstrated that there is a considerable inhomogeneity of extent of Concentration Polarization (CP) over the membrane surface especially in spacer-filled feed channels. However, the consequences ... -
Influence of membrane sealing in pressure-driven test cells on their performance
(2019-01-01)
Article
Accés obertThis communication demonstrates the relevance of membrane sealing in a test cell to its performance. Membranes need to be sealed, and therefore a more or less significant (depending on the test cell design) peripheral part ... -
Interpretation of electrokinetic measurements with porous films: role of electric conductance and streaming current within porous structure
(2010-07-06)
Article
Accés restringit per política de l'editorialIt is shown that in tangential electrokinetic measurements with porous films the porous structure makes contribution not only to the cell electric conductance (as demonstrated previously) but also to the observed streaming ... -
Nanofiltration of multi-ion solutions: Quantitative control of concentration polarization and interpretation by solution-diffusion-electro-migration model
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-04-01)
Article
Accés obertFor effective use of advanced engineering models of nanofiltration quality of experimental input is crucial, especially in electrolyte mixtures where simultaneous rejections of various ions may be very different. In ... -
Over-limiting currents and deionization “shocks” in current-induced polarization: Local-equilibrium analysis
(2012-11-15)
Article
Accés restringit per política de l'editorialThe problem is considered theoretically of dynamics of current-induced concentration polarization of interfaces between ideally perm-selective and non-ideally perm-selective (“leaky”) ion-exchange media in binary electrolyte ... -
Rejection of ammonium and nitrate from sodium chloride solutions by nanofiltration: Effect of dominant-salt concentration on the trace-ion rejection
(Elsevier, 2016-06-04)
Article
Accés obertIn this work, the rejection of two ions associated with fertilizer pollution of ground water (NH4+ and NO3-) by a polyamide nanofiltration (NF270) membrane was studied. Sodium chloride was selected as the dominant salt and ... -
Rejection of ammonium and nitrate from sodium chloride solutions by nanofiltration: Effect of dominant-salt concentration on the trace-ion rejection
(2016-11-01)
Article
Accés obertIn this work, the rejection of two ions associated with fertilizer pollution of ground water (NH4and NO3) by a polyamide nanofiltration (NF270) membrane was studied. Sodium chloride was selected as the dominant salt and ... -
Rejection of minor ionic solutes in nanofiltration : influence of solution composition
(2012)
Article
Accés obertNanofiltration (NF) is a membrane separation process used in water treatment for ion separations, taking advantage of different selectivities toward various ions, higher fluxes and lower energy requirements than in reverse ... -
Rejection of trace ionic solutes in nanofiltration: Influence of aqueous phase composition
(2013-12-18)
Article
Accés restringit per política de l'editorialThe use of nanofiltration (NF) in water treatment has been proposed to improve the quality of the produced water and extend the options of concentrate valorization, taking the benefit of its different ions selectivity ... -
Role of imperfections in transfer of organic micro-pollutants through RO/NF membranes: Numerical study
(Elsevier, 2023-12-15)
Article
Accés restringit per política de l'editorialDue to relatively low diffusivities, the rejection of organic micro-pollutants in pressure-driven membrane processes is more affected by Concentration Polarization (CP) than that of typical inorganic ions. On the other ... -
Selective transport of trivalent lanthanide in electrodialysis: Limitations due to concentration polarization
(Elsevier, 2023-11-05)
Article
Accés restringit per política de l'editorialExtraction of rare-earth ions from mixtures with other cations is an important part of recovering rare-earth ions from recycling or other streams. This study examines whether highly selective Donnan partitioning into a ... -
Separation of ions using polyelectrolyte-modified nanoporous track-etched membranes
(2013)
Article
Accés restringit per política de l'editorialSelective ion exclusion from charged nanopores in track-etched membranes allows separation of ions with different charges or mobilities. This study examines pressure-driven transport of dissolved ions through track-etched ... -
Solution-diffusion–electro-migration model and its uses for analysis of nanofiltration, pressure-retarded osmosis and forward osmosis in multi-ionic solutions
(2013-11-15)
Article
Accés restringit per política de l'editorial -
Transient membrane potential after concentration step: A new method for advanced characterization of ion-exchange membranes
(2019-09-01)
Article
Accés obertA better understanding of ion-transport mechanisms requires separate information on the equilibrium (partitioning) and kinetic (diffusivity) properties of the membranes with respect to ions. This work presents a novel ...
