Modelling non-stationary ion transfer in neutralization dialysis

Kozmai, Anton; Chérif, M.; Dammak, L.; Bdiri, Myriam; Larchet, C.; Никоненко, В. В.

doi:10.1016/j.memsci.2017.06.039

Cited by 16 publications

(22 citation statements)

References 21 publications

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“…(Table A1, Appendix A). A comparison of the experimental data and the results of simulation, as well as analysis of the literature data [39] allowed us to propose the following explanation for pH fluctuations in the case of a strong electrolyte (NaCl) solution desalination.…”

Section: Resultsmentioning

confidence: 99%

“…A periodic increase and decrease in pH into the desalination compartment was experimentally confirmed in [33,34,38]. Models [36,37] were improved in [39], where a batch mode of the ND is considered. This model includes such parameters as IEM exchange capacity, electric conductivity and diffusion layer thicknesses found from the independent experiments.…”

Section: Introductionmentioning

confidence: 81%

“…In the first case, the desalination of individual NaCl solution was performed. In this case, the problem formulation was the same as in article [39].…”

Section: System Under Studymentioning

confidence: 99%

“…The ion transport in membranes and DBLs is described by the following equations [39]: The Nernst-Planck (N-P) equation…”

Section: Problem Formulationmentioning

confidence: 99%

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Neutralization Dialysis for Phenylalanine and Mineral Salt Separation. Simple Theory and Experiment

et al. 2019

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A simple non-steady state mathematical model is proposed for the process of purification of an amino acid solution from mineral salts by the method of neutralization dialysis (ND), carried out in a circulating hydrodynamic mode. The model takes into account the characteristics of membranes (thickness, exchange capacity and electric conductivity) and solution (concentration and components nature) as well as the solution flow rate in dialyzer compartments. In contrast to the known models, the new model considers a local change in the ion concentration in membranes and the adjacent diffusion layers. In addition, the model takes into consideration the ability of the amino acid to enter the protonation/deprotonation reactions. A comparison of the results of simulations with experimental data allows us to conclude that the model adequately describes the ND of a strong electrolyte (NaCl) and amino acid (phenylalanine) mixture solutions in the case where the diffusion ability of amino acids in membranes is much less, than mineral salts. An example shows the application of the model to predict the fluxes of salt ions through ion exchange membranes as well as pH of the desalination solution at a higher than in experiments flow rate of solutions in ND dialyzer compartments.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 81%

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Neutralization Dialysis for Phenylalanine and Mineral Salt Separation. Simple Theory and Experiment

et al. 2019

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“…In the literature, it is possible to find reviews on the application of various models in the description of the most important industrial membrane processes, such as, for example, nanofiltration (Palmeri and Lefebvre 2006;Kumaran and Bajpai 2015), reverse osmosis (Sobana and Panda 2011;Wang et al 2014;Al-Obaidi et al 2017), and Donnan dialysis (Pyrzynska 2006) and electrodialysis (Rohman and Aziz 2008). The models based on the Nernst-Planck equation (Gimmi and Alt-Epping 2018;Fridman-Bishop et al 2018;Galach and Waniewski 2012;Kozmai et al 2017;Prado-Rubio et al 2010), extended Nernst-Planck equation (Moshtari et al 2017;Kumaran and Bajpai 2015;Deon et al 2013), Kedem-Katchalsky equation (Shu et al 2016;Kim et al 2010;Tanaka 2012), and also the solution-diffusion model (Yaroshchuk et al 2011) are considered the most suitable for describing the process of ion separation.…”

Section: Introductionmentioning

confidence: 99%

Kinetics simulation of transmembrane transport of ions and molecules through a semipermeable membrane

Karakhim

Zhuk

Костерін

2020

J Bioenerg Biomembr

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We have developed a model to study the kinetics of the redistribution of ions and molecules through a semipermeable membrane in complex mixtures of substances penetrating and nonpenetrating through a membrane. It takes into account the degree of dissociation of these substances, their initial concentrations in solutions separated by a membrane, and volumes of these solutions. The model is based on the assumption that only uncharged particles (molecules or ion pairs) diffuse through a membrane (and not ions as in the Donnan model). The developed model makes it possible to calculate the temporal dependencies of concentrations for all processing ions and molecules at system transition from the initial state to equilibrium. Under equilibrium conditions, the ratio of ion concentrations in solutions separated by a membrane obeys the Donnan distribution. The Donnan effect is the result of three factors: equality of equilibrium concentrations of penetrating molecules on each side of a membrane, dissociation of molecules into ions, and Le Chatelier's principle. It is shown that the Donnan distribution (irregularity of ion distribution) and accordingly absolute value of the Donnan membrane potential increases if: (i) the nonpenetrating salt concentration (in one of the solutions) and its dissociation constant increases, (ii) the total penetrating salt concentration and its dissociation constant decreases, and (iii) the volumes ratio increases (between solutions with and without a nonpenetrating substance). It is shown also that only a slight difference between the degrees of dissociation of two substances can be used for their membrane separation.

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Application of computational fluid dynamics technique in dialysis processes

Ghasemian

Rahimpour

2022

Current Trends and Future Developments on (Bio-) Membranes

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Modelling non-stationary ion transfer in neutralization dialysis

Cited by 16 publications

References 21 publications

Neutralization Dialysis for Phenylalanine and Mineral Salt Separation. Simple Theory and Experiment

Neutralization Dialysis for Phenylalanine and Mineral Salt Separation. Simple Theory and Experiment

Kinetics simulation of transmembrane transport of ions and molecules through a semipermeable membrane

Application of computational fluid dynamics technique in dialysis processes

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