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A Study on Concentration Polarization in Ultrafiltration
Separation Science and Technology, 1993Abstract A finite-difference solution of coupled transport equations for momentum and solute continuity is presented to model the concentration polarization in a tubular ultrafiltration (UF) system. The model includes the effects of solute osmotic pressure and solute rejection at the membrane surface, axial pressure drop and resistance of the gel layer.
S. Ilias, R. Govind
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A continuous-flow concentrator based on ion concentration polarization
2016 10th International Conference on Sensing Technology (ICST), 2016In this paper, we present a novel and simple method to fabricate a continuous-flow concentrator based on ion concentration polarization phenomenon (ICP). With the capillary force, the Nafion solution can fill the Nafion resin channels, and nanoporous junctions were created to generate ICP.
Hailong Pi +4 more
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Concentration, Polarity, and the Distribution of Power
International Studies Quarterly, 1993Scholars of international relations generally rely on polarity to measure the distribution of power. I argue that another feature of this distribution—concentration—should be considered more carefully in analyses of international relations. Much of the recent literature on the distribution of power draws on analogies between the structure of markets ...
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Chapter 7 Concentration Polarization
2007Publisher Summary This chapter focuses on concentration polarization. The concentration polarization is studied based on the current (I)–voltage (V) curve. The chapter derives the concentration polarization potential. Under an applied electric current, a solution in a boundary layer flows upward on the surface of the membrane because of the decrease ...
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Concentration Polarization in Hyperfiltration Systems
1972When using hyperfiltration membranes for brackish or seawater desalination, an enrichment of the solute (concentration polarization) always occurs at the membrane surface juxtaposed with the brine solution. This is due to the formation of a boundary layer separating the membrane surface from the bulk flow.
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Visualization of Concentration Polarization in Thick Electrodes
Energy Storage Materials, 2022Xinhai Li, Jiexi Wang, Guochun Yan
exaly