Permeation of concentrated oil-in-water emulsions through a membrane pore: Numerical simulation using a coupled level set and the volume-of-fluid method

Yusuke Kagawa, Toru Ishigami, Kosuke Hayashi, Hiromi Fuse, Yasushi Mino, Hideto Matsuyama

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

In this paper, we investigated the demulsification behavior of oil-in-water (O/W) emulsions during membrane permeation in the oil-water separation process using a numerical simulation approach. To accurately deal with the large deformation of the oil-water interface by coalescence and wetting, and to estimate the volume of the coalesced oil droplet, the coupled level set and volume-of-fluid method was used as the interface capturing method. We applied the simulation model to the permeation of O/W emulsions through a membrane pore, and then investigated the effects of the wettability of the membrane surface, filtration flux, and pore size on the demulsification efficiency. The results showed that oil droplets were likely to coalesce on the outlet membrane surface. High wettability on the membrane surface and low fluid velocity inside the pore increased the demulsification efficiency. This is the first work to numerically simulate the demulsification behavior of emulsions through membranes in the oil-water separation process. This journal is

Original languageEnglish
Pages (from-to)7985-7992
Number of pages8
JournalSoft Matter
Volume10
Issue number40
DOIs
Publication statusPublished - Oct 28 2014
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

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