Electrostatic phase separation: A review

S. Mhatre, V. Vivacqua, M. Ghadiri, A. M. Abdullah, Jaber Al Marri, A. Hassanpour, B. Hewakandamby, B. Azzopardi, B. Kermani

Research output: Contribution to journalReview article

68 Citations (Scopus)

Abstract

The current understanding and developments in the electrostatic phase separation are reviewed. The literature covers predominantly two immiscible and inter-dispersed liquids following the last review on the topic some 15 years. Electrocoalescence kinetics and governing parameters, such as the applied field, liquid properties, drop shape and flow, are considered. The unfavorable effects, such as chain formation and partial coalescence, are discussed in detail. Moreover, the prospects of microfluidics platforms, non-uniform fields, coalescence on the dielectric surfaces to enhance the electrocoalescence rate are also considered. In addition to the electrocoalescence in water-in-oil emulsions the research in oil-in-oil coalescence is also discussed. Finally the studies in electrocoalescer development and commercial devices are also surveyed.The analysis of the literature reveals that the use of pulsed DC and AC electric fields is preferred over constant DC fields for efficient coalescence; but the selection of the optimum field frequency a priori is still not possible and requires further research. Some recent studies have helped to clarify important aspects of the process such as partial coalescence and drop-drop non-coalescence. On the other hand, some key phenomena such as thin film breakup and chain formation are still unclear. Some designs of inline electrocoalescers have recently been proposed; however with limited success: the inadequate knowledge of the underlying physics still prevents this technology from leaving the realm of empiricism and fully developing in one based on rigorous scientific methodology.

Original languageEnglish
Pages (from-to)177-195
Number of pages19
JournalChemical Engineering Research and Design
Volume96
DOIs
Publication statusPublished - 1 Jan 2015
Externally publishedYes

Fingerprint

Coalescence
Phase separation
Electrostatics
Oils
Liquids
Emulsions
Microfluidics
Physics
Electric fields
Thin films
Kinetics
Water

Keywords

  • Crude oil treatment
  • Electrocoalescence
  • Emulsion break-up
  • Phase separation

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Mhatre, S., Vivacqua, V., Ghadiri, M., Abdullah, A. M., Al Marri, J., Hassanpour, A., ... Kermani, B. (2015). Electrostatic phase separation: A review. Chemical Engineering Research and Design, 96, 177-195. https://doi.org/10.1016/j.cherd.2015.02.012

Electrostatic phase separation : A review. / Mhatre, S.; Vivacqua, V.; Ghadiri, M.; Abdullah, A. M.; Al Marri, Jaber; Hassanpour, A.; Hewakandamby, B.; Azzopardi, B.; Kermani, B.

In: Chemical Engineering Research and Design, Vol. 96, 01.01.2015, p. 177-195.

Research output: Contribution to journalReview article

Mhatre, S, Vivacqua, V, Ghadiri, M, Abdullah, AM, Al Marri, J, Hassanpour, A, Hewakandamby, B, Azzopardi, B & Kermani, B 2015, 'Electrostatic phase separation: A review', Chemical Engineering Research and Design, vol. 96, pp. 177-195. https://doi.org/10.1016/j.cherd.2015.02.012
Mhatre S, Vivacqua V, Ghadiri M, Abdullah AM, Al Marri J, Hassanpour A et al. Electrostatic phase separation: A review. Chemical Engineering Research and Design. 2015 Jan 1;96:177-195. https://doi.org/10.1016/j.cherd.2015.02.012
Mhatre, S. ; Vivacqua, V. ; Ghadiri, M. ; Abdullah, A. M. ; Al Marri, Jaber ; Hassanpour, A. ; Hewakandamby, B. ; Azzopardi, B. ; Kermani, B. / Electrostatic phase separation : A review. In: Chemical Engineering Research and Design. 2015 ; Vol. 96. pp. 177-195.
@article{1253822c618d4bf5a39f8d0c9d0434bc,
title = "Electrostatic phase separation: A review",
abstract = "The current understanding and developments in the electrostatic phase separation are reviewed. The literature covers predominantly two immiscible and inter-dispersed liquids following the last review on the topic some 15 years. Electrocoalescence kinetics and governing parameters, such as the applied field, liquid properties, drop shape and flow, are considered. The unfavorable effects, such as chain formation and partial coalescence, are discussed in detail. Moreover, the prospects of microfluidics platforms, non-uniform fields, coalescence on the dielectric surfaces to enhance the electrocoalescence rate are also considered. In addition to the electrocoalescence in water-in-oil emulsions the research in oil-in-oil coalescence is also discussed. Finally the studies in electrocoalescer development and commercial devices are also surveyed.The analysis of the literature reveals that the use of pulsed DC and AC electric fields is preferred over constant DC fields for efficient coalescence; but the selection of the optimum field frequency a priori is still not possible and requires further research. Some recent studies have helped to clarify important aspects of the process such as partial coalescence and drop-drop non-coalescence. On the other hand, some key phenomena such as thin film breakup and chain formation are still unclear. Some designs of inline electrocoalescers have recently been proposed; however with limited success: the inadequate knowledge of the underlying physics still prevents this technology from leaving the realm of empiricism and fully developing in one based on rigorous scientific methodology.",
keywords = "Crude oil treatment, Electrocoalescence, Emulsion break-up, Phase separation",
author = "S. Mhatre and V. Vivacqua and M. Ghadiri and Abdullah, {A. M.} and {Al Marri}, Jaber and A. Hassanpour and B. Hewakandamby and B. Azzopardi and B. Kermani",
year = "2015",
month = "1",
day = "1",
doi = "10.1016/j.cherd.2015.02.012",
language = "English",
volume = "96",
pages = "177--195",
journal = "Chemical Engineering Research and Design",
issn = "0263-8762",
publisher = "Institution of Chemical Engineers",

}

TY - JOUR

T1 - Electrostatic phase separation

T2 - A review

AU - Mhatre, S.

AU - Vivacqua, V.

AU - Ghadiri, M.

AU - Abdullah, A. M.

AU - Al Marri, Jaber

AU - Hassanpour, A.

AU - Hewakandamby, B.

AU - Azzopardi, B.

AU - Kermani, B.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - The current understanding and developments in the electrostatic phase separation are reviewed. The literature covers predominantly two immiscible and inter-dispersed liquids following the last review on the topic some 15 years. Electrocoalescence kinetics and governing parameters, such as the applied field, liquid properties, drop shape and flow, are considered. The unfavorable effects, such as chain formation and partial coalescence, are discussed in detail. Moreover, the prospects of microfluidics platforms, non-uniform fields, coalescence on the dielectric surfaces to enhance the electrocoalescence rate are also considered. In addition to the electrocoalescence in water-in-oil emulsions the research in oil-in-oil coalescence is also discussed. Finally the studies in electrocoalescer development and commercial devices are also surveyed.The analysis of the literature reveals that the use of pulsed DC and AC electric fields is preferred over constant DC fields for efficient coalescence; but the selection of the optimum field frequency a priori is still not possible and requires further research. Some recent studies have helped to clarify important aspects of the process such as partial coalescence and drop-drop non-coalescence. On the other hand, some key phenomena such as thin film breakup and chain formation are still unclear. Some designs of inline electrocoalescers have recently been proposed; however with limited success: the inadequate knowledge of the underlying physics still prevents this technology from leaving the realm of empiricism and fully developing in one based on rigorous scientific methodology.

AB - The current understanding and developments in the electrostatic phase separation are reviewed. The literature covers predominantly two immiscible and inter-dispersed liquids following the last review on the topic some 15 years. Electrocoalescence kinetics and governing parameters, such as the applied field, liquid properties, drop shape and flow, are considered. The unfavorable effects, such as chain formation and partial coalescence, are discussed in detail. Moreover, the prospects of microfluidics platforms, non-uniform fields, coalescence on the dielectric surfaces to enhance the electrocoalescence rate are also considered. In addition to the electrocoalescence in water-in-oil emulsions the research in oil-in-oil coalescence is also discussed. Finally the studies in electrocoalescer development and commercial devices are also surveyed.The analysis of the literature reveals that the use of pulsed DC and AC electric fields is preferred over constant DC fields for efficient coalescence; but the selection of the optimum field frequency a priori is still not possible and requires further research. Some recent studies have helped to clarify important aspects of the process such as partial coalescence and drop-drop non-coalescence. On the other hand, some key phenomena such as thin film breakup and chain formation are still unclear. Some designs of inline electrocoalescers have recently been proposed; however with limited success: the inadequate knowledge of the underlying physics still prevents this technology from leaving the realm of empiricism and fully developing in one based on rigorous scientific methodology.

KW - Crude oil treatment

KW - Electrocoalescence

KW - Emulsion break-up

KW - Phase separation

UR - http://www.scopus.com/inward/record.url?scp=84925867288&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84925867288&partnerID=8YFLogxK

U2 - 10.1016/j.cherd.2015.02.012

DO - 10.1016/j.cherd.2015.02.012

M3 - Review article

AN - SCOPUS:84925867288

VL - 96

SP - 177

EP - 195

JO - Chemical Engineering Research and Design

JF - Chemical Engineering Research and Design

SN - 0263-8762

ER -