+44 (0)1509 263171
Please use this identifier to cite or link to this item:
|Title: ||Phenomenological continuum theory of asphaltene-stabilized oil/water emulsions|
|Authors: ||Toth, Gyula I.|
|Issue Date: ||2017|
|Publisher: ||© American Chemical Society (ACS)|
|Citation: ||TOTH, G.I., SELVAG, J. and KVAMME, B., 2017. Phenomenological continuum theory of asphaltene-stabilized oil/water emulsions. Energy & Fuels, 31(2), pp. 1218-1225.|
|Abstract: ||In this paper we use a phenomenological continuum theory of the Ginzburg-Landau
type to address emulsion formation in water/light hydrocarbon/asphaltene systems.
Based on the results of recent molecular dynamics simulations, we first calibrate the
model parameters and show, that the theory produces a reasonable equation of state.
Next, the coalescence of oil droplets is studied by a convection-diffusion dynamics as
a function of both the surface coverage and the viscosity contrast between the as-
phaltene and the bulk liquids. We show, that, besides the traditional thermodynamic
interpretation of emulsion formation, the timescale of drop coalescence can be con-
trolled independently from the interfacial tension drop, which offers an alternative,
solely kinetic driven mechanism of emulsion formation.|
|Description: ||This document is the Accepted Manuscript version of a Published Work that appeared in final form in
Energy & Fuels, copyright © American Chemical Society after peer review and technical editing by the publisher.
To access the final edited and published work see https://doi.org/10.1021/acs.energyfuels.6b02430.|
|Sponsor: ||This work has been supported by the VISTA basic research programme project No. 6359
"Surfactants for water/CO2/hydrocarbon emulsions for combined CO2 storage and utilization" of the Norwegian Academy of Science and Letters and the Statoil.|
|Version: ||Accepted for publication|
|Publisher Link: ||https://doi.org/10.1021/acs.energyfuels.6b02430|
|Appears in Collections:||Published Articles (Maths)|
Files associated with this item:
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.