Electrical impedance spectroscopy characterisation of conducting membranes

Gaedt, L; Chilcott, Terry C.; Chan, Mei‐Yee; Nantawisarakul, T.; Fane, Anthony G.; Coster, H.G.L.

doi:10.1016/s0376-7388(01)00542-7

Cited by 82 publications

(47 citation statements)

References 7 publications

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“…As we increase the relative depth of the membrane compared with the pore radius the number of particles that may be accepted by each pore varies with membrane depth, h in a discrete manner according to (10). As a result, we find that the Q-V graph similarly varies discretely, with the time taken before complete clogging occurs increasing with increasing h (Fig.…”

Section: No Pore Leakage Q * =mentioning

confidence: 77%

“…One approach is direct monitoring of foulant deposition on the surface of a membrane, which may be achieved through a variety of techniques, including microscopy, laser sensoring, reflectometry, spectroscopy, and 3D imaging [3][4][5][6][7][8][9][10][11][12]. A comprehensive review of various experimental techniques, capabilities and sensitivity specific to membrane protein fouling is provided in [13].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A combined network model for membrane fouling

Griffiths¹,

Kumar

Stewart

2014

Journal of Colloid and Interface Science

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Section: No Pore Leakage Q * =mentioning

confidence: 77%

Section: Introductionmentioning

confidence: 99%

A combined network model for membrane fouling

Griffiths¹,

Kumar

Stewart

2014

Journal of Colloid and Interface Science

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“…To investigate in-situ measurement of membrane fouling Electrical impedance spectroscopy [84,85] An alternating current is injected directly into the membrane. Capacitance dispersion changes are measured to monitor in-situ accumulation of particulates.…”

Section: Methodsmentioning

confidence: 99%

“…Chilcott et al [84] and Gaedt et al [85] proposed the use of electrical impedance spectroscopy (EIS) for characterizing membrane properties and investigating membrane fouling. In this technique, an alternating current is injected directly into the membrane via external electrical contacts with the edges of the membrane.…”

Section: Electrical Impedance Spectroscopy (Eis)mentioning

confidence: 99%

Inorganic fouling of pressure-driven membrane processes — A critical review

2010

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“…14,[16][17][18] The characterization of BMP has been carried out for aqueous solutions systems by studying the current-voltage curve, 4,[19][20][21][22][23][24][25][26][27][28] membrane potential, [29][30][31][32][33] and ac impedance spectra. [34][35][36][37][38][39] Bipolar membrane preparation can be formed by laminating (heat-pressing or gluing) an anion exchange membrane and a cation one, back to back; introducing positively charged fix groups and negatively charged ones to different sides of a neutral film, or casting a cation (or anion) exchange polyelectrolyte solution on a commercial anion (or cation) exchange membrane. 40 The ideal BMP should have high permselectivity, low electrical resistance and water splitting voltage drop, high current efficiency, good chemical and mechanical stability, long lifetime, and no "balloonig".…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of PVA/PASA-PVA/PDDAB bipolar membrane

Espinoza-Gómez¹,

Flores-López²,

Rogel-Hernández³

et al. 2009

J. Braz. Chem. Soc.

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Membranas bipolares foram preparadas pela junção de membranas de troca catiônica e aniônica. Para a preparação da camada seletiva a cátions, soluções aquosas de PVA [poli(vinil álcool)] e PASA [poli(sódio anatolesulfonato)], em que a razão PVA/PASA foi modificada para o controle da densidade de carga da membrana, foram preparadas para produzir membranas carregadas negativamente. Estas membranas foram tratadas a 100 o C por 45 min e reticuladas em solução aquosa contendo 10% de Na 2 SO 4 , 1,5% de H 2 SO 4 e 0,5% de glutaraldeído, a fim de controlar a quantidade de água no gel das membranas. As camadas seletivas a ânions foram preparadas pela dispersão de uma solução de PVA e PDDAB [poli(brometo de dialildietilamônio)] em DMF, em que a razão PVA/PDDAB foi modificada para o controle da densidade de carga na membrana. A resistência elétrica de membranas bipolares preparadas por esta metodologia aumentou ligeiramente, enquanto a seletividade diminuiu e sua perme-seletividade não mudou com o pós-tratamento ácido ou alcalino. Bipolar membranes (BMP) were prepared by bonding together separate anion and cation exchange membrane. For the preparation of the cation selective layer, aqueous solution of PVA [poly(vinyl alcohol)], and PASA [poly(anetholesulfonic acid sodium salt)], where the ratio of PVA/PASA was changed for the control of the membrane charge density, were cast for negatively charged membranes. These membranes were annealed at 100 o C for 45 min and cross-linked in an aqueous solution containing 10% Na 2 SO 4 , 1.5% H 2 SO 4 , and 0.5% glutaraldehyde in order to control water content of the gel membranes. The anion selective layers were prepared by dispersing a solution of PVA and PDDAB [poly(diallyldiethylammonium bromide)] in DMF, where the ratio of PVA/PDDAB was changed for the membrane charge density control. The electrical resistance of BMP formed by this methodology was slightly increased while the selectivity decreased, while their permselectivity did not change with the acid or alkaline post-treatment.

show abstract

Electrical impedance spectroscopy characterisation of conducting membranes

Cited by 82 publications

References 7 publications

A combined network model for membrane fouling

A combined network model for membrane fouling

Inorganic fouling of pressure-driven membrane processes — A critical review

Preparation and characterization of PVA/PASA-PVA/PDDAB bipolar membrane

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