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Karpenko, L. V.; Demina, O. A.; Dvorkina, G. A.; Parshikov, S. B.; Larchet, C.; Auclair, B.; Березина, Н. П.

doi:10.1023/a:1009081431563

Cited by 66 publications

(39 citation statements)

References 2 publications

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“…19 The electrical resistance of the membrane equilibrated with a solution of NaCl was measured using a Rhone-Poulenc clip cell. 20 The electrodes were platinized-platinum discs.…”

Section: Preparation and Characterization Of Membranesmentioning

confidence: 99%

Comparative ozonization of LDPE and HDPE and grafting of some monomers to elaborate new ion exchange membranes

Zouahri

Assouag

Robin

et al. 2006

J of Applied Polymer Sci

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ABSTRACT:A comparative study of the ozonization of low density polyethylene (LDPE) and high density polyethylene (HDPE) was carried out. A grafting study of acrylic acid (AA), N,N-dimethylamino-2-ethylmethacrylate (MA-DAME) and vinyl phosphonic acid (VPA) on LDPE and HDPE was performed in mass and solution. The ozonized polyethylene and the grafting polymers were characterized by IR spectroscopy and elementary analysis. Ion exchange membranes were prepared from grafted copolymers and characterized by the exchange capacity and electrical resistance.

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“…19 The electrical resistance of the membrane equilibrated with a solution of NaCl was measured using a Rhone-Poulenc clip cell. 20 The electrodes were platinized-platinum discs.…”

Section: Preparation and Characterization Of Membranesmentioning

confidence: 99%

Comparative ozonization of LDPE and HDPE and grafting of some monomers to elaborate new ion exchange membranes

Zouahri

Assouag

Robin

et al. 2006

J of Applied Polymer Sci

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“…Comparisons between AC and DC methods for measuring membrane resistance and general comparisons between different measurement techniques are discussed by Galama et al [1,20], Karpenko et al [22], Kamcev et al [21], Nouri et al [15], and Zabolotsky et al [40].…”

Section: Model Equation Parametersmentioning

confidence: 99%

“…Sybron Chem. Co. [31] Amberplex C-1 Room and Haas [36] P e r f l u o r i n a t e d C E M MF-4SC / MF-4SK home-made, Plastmassy, Plastpolymer [12,14,19,22,26] Nafion Figure 8 shows the results for a CMX membrane from a resistance fit (left) and a conductivity fit (right); data used from [1]. The numerical results are listed in Table 6.…”

Section: Ionac Mc3470mentioning

confidence: 99%

The Effect of the NaCl Bulk Concentration on the Resistance of Ion Exchange Membranes—Measuring and Modeling

Veerman¹

2020

Energies

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Ion exchange membranes are used in different fields of energy and separation technology such as electrodialysis, reverse electrodialysis, and fuel cells. Important aspects are permselectivity, resistance, and water transport. In this paper, we focus on the effect of the bulk NaCl concentration on the membrane resistance. Data from 36 publications containing 145 datasets using 6 different methods for measuring membrane resistance were compared. This study showed that the membrane resistance is dependent on the method of measuring. Two probable causes are identified: the application of reference electrodes and the presence of direct electrode-membrane contact. In addition, three physical and three phenomenological membrane models were tested by fitting these to the datasets. First, fits in the resistance domain were compared with fits in the conductivity domain. Resistance fits are sensitive to fluctuations in low concentrations, whereas fits in the conductivity domain are subject to nonlinear responses at high concentration. Resistance fits resulted in higher coefficients of determination (R 2 ). Then, the six models were compared. The 1-thread model with two fit parameters was in almost all cases a good start. More improvements were difficult to test due to the restricted number of data points in most of the used publications, although this study shows that the so-called Gierke model (with 4 parameters) fits better than the 3-thread model. Phenomenological models were also tested, but they did not lead to much better fits.

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“…Specific electrical conductivity (κ) of anionexchange membranes was determined by the differential method using a clip cell [25,26] and a Motech MT4080 RLC meter (Taiwan) at an ac frequency of 1 kHz. All samples were studied in NaCl solutions using successive balancing with 0.25, 0.5, 0.75, 1.0, 1.5, and 2.0 M solutions.…”

Section: Procedures For Measuring Membranementioning

confidence: 99%

Application of Sodium Chloride Solutions to Regeneration of Anion-Exchange Membranes Used for Improving Grape Juices and Wines

Nevakshenova

Сарапулова

Nikonenko

et al. 2019

Membr. Membr. Technol.

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Membrane technologies, in particular, electrodialysis, are increasingly being used to stabilize and condition juices and wines. This work is aimed at finding environmentally appropriate "mild" methods for regeneration of anion-exchange membranes that are used in these processes. It has been shown that the fouling of anion-exchange membranes by grape wine components leads to an increase in both their electrical resistance by 30 or more times and thickness. The behavior of the resistance and its values in grape juice and wine for the investigated membranes are similar, apparently, due to the similar chemical composition of these liquid media. Treatment with NaCl solutions leads to partial degradation of the formed colloidal particles as a result of to the salting-out effect. The higher the salt concentration in the regenerating solution, the closer the conductivity values of the regenerated membranes are to the original values. The thinner the membrane and the larger its pores, the faster and more complete the regeneration process. If the contact time of anionexchange membranes with wine does not exceed 70 h, salt regeneration can almost completely restore their selectivity. For example, in the case of homogeneous AMX-Sb membrane, the transport numbers of the counterion Cl − in the initial and regenerated samples differ by no more than 1%. In the case of heterogeneous MA-41P membrane, this difference increases to 3%.

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Cited by 66 publications

References 2 publications

Comparative ozonization of LDPE and HDPE and grafting of some monomers to elaborate new ion exchange membranes

Comparative ozonization of LDPE and HDPE and grafting of some monomers to elaborate new ion exchange membranes

The Effect of the NaCl Bulk Concentration on the Resistance of Ion Exchange Membranes—Measuring and Modeling

Application of Sodium Chloride Solutions to Regeneration of Anion-Exchange Membranes Used for Improving Grape Juices and Wines

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