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Modeling Electric Double-Layers Including Chemical Reaction Effects
Lund University ; Wetsus, centre of excellence for sustainable water technology, The Netherlands ; Technical University of Denmark, Denmark.
Technical University of Denmark, Denmark.
Technical University of Denmark, Denmark.
Universidade Nova de Lisboa, Portugal.
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2014 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 150, 263-268 p.Article in journal (Refereed) Published
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Text
Abstract [en]

A physicochemical and numerical model for the transient formation of an electric double-layer between an electrolyte and a chemically-active flat surface is presented, based on a finite elements integration of the nonlinear Nernst-Planck-Poisson model including chemical reactions. The model works for symmetric and asymmetric multi-species electrolytes and is not limited to a range of<br/>surface potentials. Numerical simulations are presented, for the case of a CaCO3 electrolyte solution in contact with a surface with rate-controlled protonation/deprotonation reactions. The surface charge and potential are determined by the surface reactions, and therefore they depends on the<br/>bulk solution composition and concentration

Place, publisher, year, edition, pages
2014. Vol. 150, 263-268 p.
Keyword [en]
Electric double-layer, Gouy-Chapman, Surface complexation, Reactive-transport modeling, Nernst-Planck-Poisson, Finite element analysis
National Category
Construction Management
Research subject
Technology (byts ev till Engineering), Civil engineering
Identifiers
URN: urn:nbn:se:lnu:diva-48697DOI: 10.1016/j.electacta.2014.10.056OAI: oai:DiVA.org:lnu-48697DiVA: diva2:893422
Available from: 2016-01-12 Created: 2016-01-12 Last updated: 2016-01-18Bibliographically approved

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Johannesson, Björn
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