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Apel P, Koter S, Yaroshchuk A. Time-resolved pressure-induced electric potential in nanoporous membranes: Measurement and mechanistic interpretation. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Barragán VM, Ruiz-Bauzá C, Imaña JL. Streaming potential across cation-exchange membranes in methanol–water electrolyte solutions. J Colloid Interface Sci 2006; 294:473-81. [PMID: 16102776 DOI: 10.1016/j.jcis.2005.07.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2005] [Revised: 07/11/2005] [Accepted: 07/18/2005] [Indexed: 11/30/2022]
Abstract
Streaming potential measurements across charged membranes separating two equal solutions have been carried out. Two cation-exchange membranes with different cross-linked and swelling properties (Ionics and Nafion membranes) and methanol-water electrolyte solutions of KCl have been used in the experiments. The obtained results show that the streaming potential is higher for the Ionics membrane and that the values depend on the methanol content of the solutions. A different behavior is found in the dependence of the streaming potential on the methanol percentage for each membrane. The study of the relaxation times in the decay of electrokinetic steady states of streaming potential has been carried out from the time dependence of the streaming potential when the pressure difference through the membrane is suppressed. The results show the existence of two different parts or partial relaxations, mechanical and electric. A different behavior of the mechanical relaxation time with the methanol percentage has been found for the two membranes, but any significant difference between their electric relaxation times. These differences have been explained in terms of the different degree of swelling of the membranes used.
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Affiliation(s)
- V M Barragán
- Dpto. Física Aplicada I, Facultad de Física, Universidad Complutense de Madrid, 28040 Madrid, Spain.
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Fievet P, Sbaï M, Szymczyk A. Analysis of the pressure-induced potential arising across selective multilayer membranes. J Memb Sci 2005. [DOI: 10.1016/j.memsci.2005.04.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Yang J, Grundke K, Bellmann C, Michel S, Kostiuk LW, Kwok DY. Oscillating Streaming Potential and Electro-osmosis of Multilayer Membranes. J Phys Chem B 2004. [DOI: 10.1021/jp0359485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Yang
- Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, T6G 2G8, Canada T6G, and Institute of Polymer Research, Dresden, Hohe Strausse 6, D-01069, Dresden, Germany
| | - Karina Grundke
- Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, T6G 2G8, Canada T6G, and Institute of Polymer Research, Dresden, Hohe Strausse 6, D-01069, Dresden, Germany
| | - Cornelia Bellmann
- Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, T6G 2G8, Canada T6G, and Institute of Polymer Research, Dresden, Hohe Strausse 6, D-01069, Dresden, Germany
| | - Stefan Michel
- Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, T6G 2G8, Canada T6G, and Institute of Polymer Research, Dresden, Hohe Strausse 6, D-01069, Dresden, Germany
| | - Larry W. Kostiuk
- Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, T6G 2G8, Canada T6G, and Institute of Polymer Research, Dresden, Hohe Strausse 6, D-01069, Dresden, Germany
| | - Daniel Y. Kwok
- Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta, T6G 2G8, Canada T6G, and Institute of Polymer Research, Dresden, Hohe Strausse 6, D-01069, Dresden, Germany
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Fievet P, Szymczyk A, Labbez C, Aoubiza B, Simon C, Foissy A, Pagetti J. Determining the Zeta Potential of Porous Membranes Using Electrolyte Conductivity inside Pores. J Colloid Interface Sci 2001; 235:383-390. [PMID: 11254318 DOI: 10.1006/jcis.2000.7331] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The zeta potential is an important and reliable indicator of the surface charge of membranes, and knowledge of it is essential for the design and operation of membrane processes. The zeta potential cannot be measured directly, but must be deduced from experiments by means of a model. The possibility of determining the zeta potential of porous membranes from measurements of the electrolyte conductivity inside pores (lambda(pore)) is investigated in the case of a ceramic microfiltration membrane. To this end, experimental measurements of the electrical resistance in pores are performed with the membrane filled with KCl solutions of various pHs and concentrations. lambda(pore) is deduced from these experiments. The farther the pH is from the isoelectric point and/or the lower the salt concentration is, the higher the ratio of the electrolyte conductivity inside pores to the bulk conductivity is, due to a more important contribution of the surface conduction. Zeta potentials are calculated from lambda(pore) values by means of a space charge model and compared to those calculated from streaming potential measurements. It is found that the isoelectric points are very close and that zeta potential values for both methods are in quite good agreement. The differences observed in zeta potentials could be due to the fact that the space charge model does not consider the surface conductivity in the inner part of the double layer. Measurements of the electrolyte conductivity within the membrane pores are proved to be a well-adapted procedure for the determination of the zeta potential in situations where the contribution of the surface conduction is significant, i.e., for small and charged pores. Copyright 2001 Academic Press.
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Affiliation(s)
- P. Fievet
- Laboratoire de Chimie des Matériaux et Interfaces, 16 route de Gray, Besançon cedex, 25030, France
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Molina C, Victoria L, Arenas A, Ibáñez JA. Streaming potential and surface charge density of microporous membranes with pore diameter in the range of thickness. J Memb Sci 1999. [DOI: 10.1016/s0376-7388(99)00162-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ricq L, Pierre A, Reggiani JC, Zaragoza-Piqueras S, Pagetti J, Daufin G. Effects of proteins on electrokinetic properties of inorganic membranes during ultra- and micro-filtration. J Memb Sci 1996. [DOI: 10.1016/0376-7388(95)00248-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Sekiguchi O, Kiyono R, Matsubara T, Tasaka M. Relaxation of polymer chains dissolved in the liquid phase of membranes under a pressure gradient. II. Correlation with membrane composition. J Memb Sci 1990. [DOI: 10.1016/0376-7388(90)85012-a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Tasaka M, Sekiguchi O, Urahama M, Matsubara T, Kiyono R, Suzuki S. Relaxation of polymer chains dissolved in the liquid phase of membranes under a pressure gradient. J Memb Sci 1990. [DOI: 10.1016/s0376-7388(00)80798-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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