caa a22 4500 445851015 CHVBK 20180317145413.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1134/S0040579511020114 doi (NATIONALLICENCE)springer-10.1134/S0040579511020114 Dynamics of a reverse osmosis unit with application to pulsating regimes for process optimization [Elektronische Daten] [A. Reverberi, V. Meshalkin, C. Cerrato, Yu. Savina] We propose unsteady-state reverse osmosis cell modelling in two dimensions. The convection-diffusion equation describing the concentration of the relevant chemical species is solved by a finite difference technique, while the velocity field is described by empirical expressions for spiral-wound membrane cells. A non-constant permeability is introduced to take into account the effects of membrane compaction at high operating pressures. The role of concentration polarization is discussed for different values of the parameters describing the global process. Finally, the model is applied to predict the effects of a pulsating flow where a cyclic pressure feed is adopted to enhance the permeate flux. In this context, an experimental validation of the model is proposed. Pleiades Publishing, Ltd., 2011 Reverberi A. University of Genova, Genova, Italy aut Meshalkin V. Mendeleev University of Chemical Technology of Russia, Moscow, Russia aut Cerrato C. University of Genova, Genova, Italy aut Savina Yu Mendeleev University of Chemical Technology of Russia, Moscow, Russia aut Theoretical Foundations of Chemical Engineering SP MAIK Nauka/Interperiodica 45/2(2011-04-01), 190-197 0040-5795 45:2<190 2011 45 11236 https://doi.org/10.1134/S0040579511020114 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0040579511020114 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Reverberi A. University of Genova, Genova, Italy aut NATIONALLICENCE 700 1- Meshalkin V. Mendeleev University of Chemical Technology of Russia, Moscow, Russia aut NATIONALLICENCE 700 1- Cerrato C. University of Genova, Genova, Italy aut NATIONALLICENCE 700 1- Savina Yu Mendeleev University of Chemical Technology of Russia, Moscow, Russia aut NATIONALLICENCE 773 0- Theoretical Foundations of Chemical Engineering SP MAIK Nauka/Interperiodica 45/2(2011-04-01), 190-197 0040-5795 45:2<190 2011 45 11236 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer