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Electrophoretic Measurements of Crude Oil Fractions Dispersed in Aqueous Solutions of Different Ionic Compositions-Evaluation of the Interfacial Charging Mechanisms

Abstract

Electrophoretic measurements were carried out as a function of pH for various fractions of an acidic crude oil dispersed in pure water and low salinity solutions of NaCl and CaCl2. The acidic and basic components were selectively extracted from the crude oil in order to elucidate their importance for the interfacial charges and implicitly the zeta potentials. Ionization of basic and acidic components at low and high pH, respectively, could not fully account for the obtained zeta potentials. The results could, however, be explained by additional consideration of interfacial hydroxide ions, coming from the water phase.

Category

Academic article

Language

English

Author(s)

  • Umer Farooq
  • Sebastien Charles Simon
  • Medad Twimukye Tweheyo
  • Johan Sjøblom
  • Gisle Øye

Affiliation

  • Norwegian University of Science and Technology
  • SINTEF Ocean / Miljø og nye ressurser
  • Equinor

Year

2013

Published in

Journal of Dispersion Science and Technology

ISSN

0193-2691

Volume

34

Issue

10

Page(s)

1376 - 1381

View this publication at Cristin