Multi-Asymmetric Ion-Diode Membranes with Superior Selectivity and Zero Concentration Polarization Effect

ACS Nano ◽  
2019 ◽  
Vol 13 (9) ◽  
pp. 10761-10767 ◽  
Author(s):  
Jaehoon Jung ◽  
Jongyoung Kim ◽  
Han Sup Lee ◽  
Il-Suk Kang ◽  
Kiwoon Choi
Keyword(s):  
Polarization Effect ◽  
Concentration Polarization

Concentration polarization effect at the deposition of charged Langmuir monolayers

2011 ◽  
Vol 168 (1-2) ◽  
pp. 114-123 ◽  
Author(s):  
V.I. Kovalchuk ◽  
E.K. Zholkovskiy ◽  
M.P. Bondarenko ◽  
V.M. Starov ◽  
D. Vollhardt
Keyword(s):  
Polarization Effect ◽  
Concentration Polarization ◽  
Langmuir Monolayers

The Concentration Polarization Effect in Frozen Erythrocytes

1977 ◽  
Vol 99 (2) ◽  
pp. 65-73 ◽  
Author(s):  
R. L. Levin ◽  
E. G. Cravalho ◽  
C. E. Huggins
Keyword(s):  
Cell Membrane ◽  
Water Transport ◽  
Transport Process ◽  
Polarization Effect ◽  
Concentration Polarization ◽  
Binary Solution ◽  
Solution Model ◽  
Subzero Temperatures ◽  
Intracellular Medium

An ideal, hydrated, nondilute pseudo-binary solution model is presented to describe the concentration polarization of solutes within cells during osmotic experiments. This model has been applied to the case of hyman erythrocytes being cooled at subzero temperatures. The concentration polarization of solutes within the RBC intracellular solution during freezing reveals the fact that the water transport process is significantly affected not only by the permeation of water through the cell membrane, but also by the diffusion of water within the intracellular medium.

Concentration polarization effect and preferable membrane configuration at pressure-retarded osmosis operation

Desalination ◽  
2016 ◽  
Vol 389 ◽  
pp. 58-67 ◽  
Author(s):  
Thi Phuong Nga Nguyen ◽  
Byung-Moon Jun ◽  
Hyung Gyu Park ◽  
Sang-Woo Han ◽  
Yu-Kyung Kim ◽  
...  
Keyword(s):  
Polarization Effect ◽  
Concentration Polarization ◽  
Pressure Retarded Osmosis

Modeling of external and internal concentration polarization effect on flux behaviour of forward osmosis

2008 ◽  
Vol 8 (5) ◽  
pp. 533-539 ◽  
Author(s):  
C. H. Tan ◽  
H. Y. Ng
Keyword(s):  
Excellent Agreement ◽  
Polarization Effect ◽  
Concentration Polarization ◽  
Transport Model ◽  
Water Flux ◽  
Forward Osmosis ◽  
Selective Membrane ◽  
Internal Concentration ◽  
Internal Concentration Polarization ◽  
The Impact

The forward osmosis process has recently gained more interest from researchers and is being viewed as an alternative to various membrane processes. The primary challenge in developing the process is the severity of both external and internal concentration polarizations, which significantly reduce the water flux across the highly selective membrane. This study investigates the impact of concentration polarization on flux behaviour. A model adopted from the boundary layer concept was used to describe the external concentration polarization effect. A previously developed model for the internal concentration polarization was further improved from the governing convective-diffusion equations, to achieve a better transport model that was in excellent agreement with experimental flux data. Laboratory experiments were carried out to account for both the external and internal concentration polarization and the associated water flux was verified with the improved models. Results showed excellent agreement for both models, which were used to describe external and internal concentration polarization, and these modified models were more accurate than previously used models.

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