Dynamics of a reverse osmosis unit with application to pulsating regimes for process optimization

被引：5

作者：

Reverberi, A. P. ^{[1
]}

Meshalkin, V. P. ^{[2
]}

Cerrato, C. ^{[1
]}

Savina, Yu. O. ^{[2
]}

机构：

[1] Univ Genoa, Genoa, Italy

[2] Mendeleev Univ Chem Technol Russia, Moscow, Russia

来源：

THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING | 2011年 / 45卷 / 02期

关键词：

CONCENTRATION POLARIZATION; PERMEATE FLUX; MEMBRANES; BEHAVIOR; WATER; RECOVERY; SYSTEM; MODEL;

D O I：

10.1134/S0040579511020114

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

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.

引用

页码：190 / 197

页数：8

共 24 条

[1] Mathematical modeling of multiple solutes system for reverse osmosis process in palm oil mill effluent (POME) treatment [J].