Electrodiffusion of ions in ion exchange membranes: finite element simulations and experiments

Kuldeep Kuldeep; Pertti Kauranen; Heikki Pajari; Risto Pajarre; Lasse Murtomäki

doi:10.1016/j.ceja.2021.100169

Electrodiffusion of ions in ion exchange membranes: finite element simulations and experiments

Kuldeep Kuldeep
, Pertti Kauranen
, Heikki Pajari
, Risto Pajarre
, Lasse Murtomäki

VTT Technical Research Centre of Finland Ltd.

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

17 Sitaatiot (Scopus)

348 Lataukset (Pure)

Abstrakti

Electrodiffusion of ions in both cation (CEM) and anion exchange membranes (AEM) has been studied with theoretical calculations and experimental studies. Calculations are based on the Finite Element Method (FEM) using COMSOL Multiphysics® software. Nernst-Planck equations are solved in multi-ionic systems where no closed form solutions are available. Simulations are compared with laboratory-scale experiments in terms of current efficiency and membrane selectivity. Simulations revealed unexpected features in transport, due to coupling of ionic fluxes when the local electroneutrality condition is assumed. Transport of weak electrolytes showed the importance of involving ionic equilibria along the concentration profiles in both solutions and membranes, compelling to consider ionic constituents. The advantage of the COMSOL simulations is the ease to find concentration and potential profiles across the entire system, and to split fluxes to diffusion and migration contributions, showing their coupling even in the absence of electric current.

Alkuperäiskieli	Englanti
Artikkeli	100169
Julkaisu	Chemical Engineering Journal Advances
Vuosikerta	8
Varhainen verkossa julkaisun päivämäärä	20 elok. 2021
DOI - pysyväislinkit	https://doi.org/10.1016/j.ceja.2021.100169
Tila	Julkaistu - 15 marrask. 2021
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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10.1016/j.ceja.2021.100169Lisenssi: CC BY-NC-ND

CHEM_Kuldeep_et_al_Electrodiffusion_of_ions_2021_Chemical_Engineering_Journal_AdvancesFinal published version, 2,46 MBLisenssi: CC BY-NC-ND

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Linkki julkaisuun Scopuksessa

CREDIT 2020: CREDIT 2020
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01/01/2021 → 31/12/2021
Projekti: EU H2020 EIT

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Kuldeep, Ahonen, T., Rosenthal, M. & Murtomäki, L., 15 toukok. 2023, julkaisussa: Chemical Engineering Journal Advances . 14, 5 Sivumäärä, 100450.
Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

Open access
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Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

Open access
Tiedosto
40 Sitaatiot (Scopus)

1069 Lataukset (Pure)

Siteeraa tätä

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title = "Electrodiffusion of ions in ion exchange membranes: finite element simulations and experiments",

abstract = "Electrodiffusion of ions in both cation (CEM) and anion exchange membranes (AEM) has been studied with theoretical calculations and experimental studies. Calculations are based on the Finite Element Method (FEM) using COMSOL Multiphysics{\textregistered} software. Nernst-Planck equations are solved in multi-ionic systems where no closed form solutions are available. Simulations are compared with laboratory-scale experiments in terms of current efficiency and membrane selectivity. Simulations revealed unexpected features in transport, due to coupling of ionic fluxes when the local electroneutrality condition is assumed. Transport of weak electrolytes showed the importance of involving ionic equilibria along the concentration profiles in both solutions and membranes, compelling to consider ionic constituents. The advantage of the COMSOL simulations is the ease to find concentration and potential profiles across the entire system, and to split fluxes to diffusion and migration contributions, showing their coupling even in the absence of electric current.",

keywords = "Nernst-Planck equation, multi-ionic transport, Ion-exchange membranes, Finite Element Method, simulation",

author = "Kuldeep Kuldeep and Pertti Kauranen and Heikki Pajari and Risto Pajarre and Lasse Murtom{\"a}ki",

note = "This work has received funding from the European Institute of Innovation and Technology (EIT), a body of the European Union, under the Horizon 2020, the EU Framework Programme for Research and Innovation. Project Name and Number: 680652 Credit -18243. SUEZ water technologies and solutions is acknowledged for the supply of the membranes",

year = "2021",

month = nov,

day = "15",

doi = "10.1016/j.ceja.2021.100169",

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AU - Kuldeep, Kuldeep

AU - Kauranen, Pertti

AU - Pajari, Heikki

AU - Pajarre, Risto

AU - Murtomäki, Lasse

N1 - This work has received funding from the European Institute of Innovation and Technology (EIT), a body of the European Union, under the Horizon 2020, the EU Framework Programme for Research and Innovation. Project Name and Number: 680652 Credit -18243. SUEZ water technologies and solutions is acknowledged for the supply of the membranes

PY - 2021/11/15

Y1 - 2021/11/15

N2 - Electrodiffusion of ions in both cation (CEM) and anion exchange membranes (AEM) has been studied with theoretical calculations and experimental studies. Calculations are based on the Finite Element Method (FEM) using COMSOL Multiphysics® software. Nernst-Planck equations are solved in multi-ionic systems where no closed form solutions are available. Simulations are compared with laboratory-scale experiments in terms of current efficiency and membrane selectivity. Simulations revealed unexpected features in transport, due to coupling of ionic fluxes when the local electroneutrality condition is assumed. Transport of weak electrolytes showed the importance of involving ionic equilibria along the concentration profiles in both solutions and membranes, compelling to consider ionic constituents. The advantage of the COMSOL simulations is the ease to find concentration and potential profiles across the entire system, and to split fluxes to diffusion and migration contributions, showing their coupling even in the absence of electric current.

AB - Electrodiffusion of ions in both cation (CEM) and anion exchange membranes (AEM) has been studied with theoretical calculations and experimental studies. Calculations are based on the Finite Element Method (FEM) using COMSOL Multiphysics® software. Nernst-Planck equations are solved in multi-ionic systems where no closed form solutions are available. Simulations are compared with laboratory-scale experiments in terms of current efficiency and membrane selectivity. Simulations revealed unexpected features in transport, due to coupling of ionic fluxes when the local electroneutrality condition is assumed. Transport of weak electrolytes showed the importance of involving ionic equilibria along the concentration profiles in both solutions and membranes, compelling to consider ionic constituents. The advantage of the COMSOL simulations is the ease to find concentration and potential profiles across the entire system, and to split fluxes to diffusion and migration contributions, showing their coupling even in the absence of electric current.

KW - Nernst-Planck equation

KW - multi-ionic transport

KW - Ion-exchange membranes

KW - Finite Element Method

KW - simulation

UR - https://www.scopus.com/pages/publications/85116387771

U2 - 10.1016/j.ceja.2021.100169

DO - 10.1016/j.ceja.2021.100169

M3 - Article

SN - 2666-8211

VL - 8

JO - Chemical Engineering Journal Advances

JF - Chemical Engineering Journal Advances

M1 - 100169

ER -

Electrodiffusion of ions in ion exchange membranes: finite element simulations and experiments

Abstrakti

YK:n kestävän kehityksen tavoitteet

Pääsy asiakirjaan

Muut tiedostot ja linkit

Sormenjälki

Projektit

CREDIT 2020: CREDIT 2020

Tutkimustuotos

Bipolar membrane electrodialysis of Na2CO3 and industrial green liquor for producing NaOH: A sustainable solution for pulp and paper industries

Bipolar Membrane Electrodialysis for Sulfate Recycling in the Metallurgical Industries

Siteeraa tätä

Bipolar membrane electrodialysis of Na₂CO₃ and industrial green liquor for producing NaOH: A sustainable solution for pulp and paper industries