Investigation of Reverse ElectroDialysis Units by Multi-Physical Modelling

Santoro, F

Risultato della ricerca: Paper

Abstract

Reverse electrodialysis (RED) is an electrochemical membrane process that converts the salinity gradient energy between two solutions into electric current, by using ion exchange membranes. A novel multi-physical approach for RED modelling is proposed. 2-D simulations of one cell pair with tertiary current distribution (Nernst–Plank equation and local electroneutrality) were performed. Moreover, the Donnan exclusion theory was implemented for simulating double layer phenomena. Transport phenomena and electrochemical behavior were well described. The influence of membrane/channel configuration, dilute concentration and feeds velocity on the process performance was assessed. For a dilute concentration ≤ 0.01M, stacks with profiled membranes reached lower resistances and higher net powers (up to 4.4 W/m2) with respect to stacks with empty channels, thus suggesting that only in some cases the profiles lead to a performance enhancement.
Lingua originaleEnglish
Stato di pubblicazionePublished - 2016

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Electrodialysis
Membranes
Ion exchange membranes
Electric currents

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Investigation of Reverse ElectroDialysis Units by Multi-Physical Modelling. / Santoro, F.

2016.

Risultato della ricerca: Paper

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title = "Investigation of Reverse ElectroDialysis Units by Multi-Physical Modelling",
abstract = "Reverse electrodialysis (RED) is an electrochemical membrane process that converts the salinity gradient energy between two solutions into electric current, by using ion exchange membranes. A novel multi-physical approach for RED modelling is proposed. 2-D simulations of one cell pair with tertiary current distribution (Nernst–Plank equation and local electroneutrality) were performed. Moreover, the Donnan exclusion theory was implemented for simulating double layer phenomena. Transport phenomena and electrochemical behavior were well described. The influence of membrane/channel configuration, dilute concentration and feeds velocity on the process performance was assessed. For a dilute concentration ≤ 0.01M, stacks with profiled membranes reached lower resistances and higher net powers (up to 4.4 W/m2) with respect to stacks with empty channels, thus suggesting that only in some cases the profiles lead to a performance enhancement.",
author = "{Santoro, F} and Michele Ciofalo and Andrea Cipollina and Micale, {Giorgio Domenico Maria} and Alessandro Tamburini and Luigi Gurreri and Giuseppe Battaglia",
year = "2016",
language = "English",

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TY - CONF

T1 - Investigation of Reverse ElectroDialysis Units by Multi-Physical Modelling

AU - Santoro, F

AU - Ciofalo, Michele

AU - Cipollina, Andrea

AU - Micale, Giorgio Domenico Maria

AU - Tamburini, Alessandro

AU - Gurreri, Luigi

AU - Battaglia, Giuseppe

PY - 2016

Y1 - 2016

N2 - Reverse electrodialysis (RED) is an electrochemical membrane process that converts the salinity gradient energy between two solutions into electric current, by using ion exchange membranes. A novel multi-physical approach for RED modelling is proposed. 2-D simulations of one cell pair with tertiary current distribution (Nernst–Plank equation and local electroneutrality) were performed. Moreover, the Donnan exclusion theory was implemented for simulating double layer phenomena. Transport phenomena and electrochemical behavior were well described. The influence of membrane/channel configuration, dilute concentration and feeds velocity on the process performance was assessed. For a dilute concentration ≤ 0.01M, stacks with profiled membranes reached lower resistances and higher net powers (up to 4.4 W/m2) with respect to stacks with empty channels, thus suggesting that only in some cases the profiles lead to a performance enhancement.

AB - Reverse electrodialysis (RED) is an electrochemical membrane process that converts the salinity gradient energy between two solutions into electric current, by using ion exchange membranes. A novel multi-physical approach for RED modelling is proposed. 2-D simulations of one cell pair with tertiary current distribution (Nernst–Plank equation and local electroneutrality) were performed. Moreover, the Donnan exclusion theory was implemented for simulating double layer phenomena. Transport phenomena and electrochemical behavior were well described. The influence of membrane/channel configuration, dilute concentration and feeds velocity on the process performance was assessed. For a dilute concentration ≤ 0.01M, stacks with profiled membranes reached lower resistances and higher net powers (up to 4.4 W/m2) with respect to stacks with empty channels, thus suggesting that only in some cases the profiles lead to a performance enhancement.

UR - http://hdl.handle.net/10447/210133

UR - https://www.comsol.com/2016-user-presentations/batteries-fuel-cells-and-electrochemical-processes

M3 - Paper

ER -