Breaking of double emulsions based on electrohydrodynamics principles

Aleksandar M Spasic; Jovan M Jovanovic; Vaso Manojlovic; Mica Jovanovic

doi:10.1016/j.jcis.2016.06.061

Breaking of double emulsions based on electrohydrodynamics principles

J Colloid Interface Sci. 2016 Oct 1:479:165-172. doi: 10.1016/j.jcis.2016.06.061. Epub 2016 Jun 29.

Authors

Aleksandar M Spasic¹, Jovan M Jovanovic², Vaso Manojlovic³, Mica Jovanovic⁴

Affiliations

¹ Institute for Technology of Nuclear and Other Mineral Raw Materials, Department of Chemical Engineering, 86 F. d'Esperey St., P.O. Box 390, 11000 Belgrade, Serbia. Electronic address: a.spasic@itnms.ac.rs.
² Innovation Center, Department of Technology and Metallurgy, University of Belgrade, 4 Karnegijeva St., 11120 Belgrade, Serbia.
³ Institute for Technology of Nuclear and Other Mineral Raw Materials, Department of Chemical Engineering, 86 F. d'Esperey St., P.O. Box 390, 11000 Belgrade, Serbia.
⁴ Department of Technology and Metallurgy, University of Belgrade, 4 Karnegijeva St., 11120 Belgrade, Serbia.

PMID: 27388130
DOI: 10.1016/j.jcis.2016.06.061

Abstract

This research focuses on the modeling of the liquid-liquid dispersed system, including particular insight on the electrocoalescence (EC) process that occurs during the breaking of double emulsions. The representative system, used in this work, was taken from the pilot plant for solvent extraction of uranium from wet phosphoric acid. The chosen framework required for elucidation of the EC process is based on the electrohydrodynamic (EHD) principles. During the model development it was necessary to consider several theoretical concepts for easier understanding and description of the related events. The first is the concept of entities, and corresponding classification of finely dispersed systems. The second concept is an introduction of almost forgotten basic electrodynamics element the memdiode or memristor as a current controlled device, and corresponding memristive systems. Hence, the conclusions that may be withdrawn from the presented results and findings could enable easier designing of the solutions for a breaking of double emulsions problems, that is, the entrainment problems that may arise in some pilot or industrial plants. Finally, the perspectives and the remaining challenges, considering the here discussed concepts and model based on the EHD principles, are mentioned.

Keywords: Coalescence; Double emulsions; Electrocoalescence; Electrohydrodynamics; Electroviscoelasticity; Liquid-liquid dispersions; Marangoni instabilities; Memristive system; Memristor.