Determining the Zeta Potential of Porous Membranes Using Electrolyte Conductivity inside Pores

Fiévet, P.; Szymczyk, Anthony; Labbez, Christophe; Aoubiza, B.; Simon, Christian; Foissy, A.; Pagetti, J.

doi:10.1006/jcis.2000.7331

Cited by 53 publications

(40 citation statements)

References 37 publications

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“…Overlapping double layers hinder the transport of ions through the pores. Only surface conduction will be possible, if the overlap and the blockage of the pores are ideal [18]. Finally, the variation in the reflection coefficient, σ , which is the degree of semipermeability of the membrane, is again very small; cf.…”

Section: Discussionmentioning

confidence: 99%

Quantifying the effect of membrane potential in chemical osmosis across bentonite membranes by virtual short-circuiting

Heister

Kleingeld

Loch

2005

Journal of Colloid and Interface Science

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Section: Discussionmentioning

confidence: 99%

Quantifying the effect of membrane potential in chemical osmosis across bentonite membranes by virtual short-circuiting

Heister

Kleingeld

Loch

2005

Journal of Colloid and Interface Science

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“…Rather surprisingly, the streaming potential [not the streaming current, (van der Heyden et al 2005)] has not widely employed in the characterization of nanopores in spite of its relative experimental simplicity and considerable use in the case of porous membranes (Kontturi et al 1994;Huisman et al 2000;Cervera et al 2001b;Fievet et al 2001).…”

Section: Streaming Potentialmentioning

confidence: 99%

Incorporating ionic size in the transport equations for charged nanopores

Cervera

Ramı́rez

Manzanares

et al. 2009

Microfluid Nanofluid

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Nanopores with fixed charges show ionic selectivity because of the high surface potential and the small pore radius. In this limit, the size of the ions could no longer be ignored because they occupy a significant fraction of the pore and, in addition, they would reach unrealistic concentrations at the surface if treated as point charges. However, most models of selectivity assume point ions and ignore this fact. Although this approach shows the essential qualitative trends of the problem, it is not strictly valid for high surface potentials and low nanopore radii, which is just the case where a high ionic selectivity should be expected. We consider the effect of ion size on the electrical double layer within a charged cylindrical nanopore using an extended Poisson-Boltzmann equation, paying special attention to (non-equilibrium) transport properties such as the streaming potential, the counter-ion transport number, and the electrical conductance. The first two quantities are related to the nanopore selectivity while the third one characterizes the conductive properties. We discuss the nanopore characteristics in terms of the ratio between the electrolyte and fixed charge concentrations and the ratio between the ionic and nanopore radii showing the experimental range where the point ion model can still be useful. Even for relatively small inorganic ions at intermediate concentrations, ion size effects could be significant for a quantitative estimation of the nanopore selectivity in the case of high surface charge densities.

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“…The most widely used techniques are electrophoresis and streaming potential. The former allows the characterization of the electrokinetic properties of particles, whereas the latter can be applied to particles (2) as well as massive materials (3)(4)(5). The main factor that tends to make electrophoresis less suitable than streaming potential is its restrictions of particle size (6).…”

Section: Introductionmentioning

confidence: 98%

Electrokinetic Characterization of Porous Plugs from Streaming Potential Coupled with Electrical Resistance Measurements

Szymczyk

Fiévet

Foissy

2002

Journal of Colloid and Interface Science

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Determining the Zeta Potential of Porous Membranes Using Electrolyte Conductivity inside Pores

Cited by 53 publications

References 37 publications

Quantifying the effect of membrane potential in chemical osmosis across bentonite membranes by virtual short-circuiting

Quantifying the effect of membrane potential in chemical osmosis across bentonite membranes by virtual short-circuiting

Incorporating ionic size in the transport equations for charged nanopores

Electrokinetic Characterization of Porous Plugs from Streaming Potential Coupled with Electrical Resistance Measurements

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