Jump to main content
Jump to site search

Issue 4, 2019
Previous Article Next Article

Effect of external electric field on nanobubbles at the surface of hydrophobic particles during air flotation

Author affiliations

Abstract

In this paper, the effect of external electric field on nanobubbles adsorbed on the surface of hydrophobic particles during air flotation was studied by molecular dynamics simulations. The gas density distribution, diffusion coefficient, viscosity, and the change of the angle and number distribution of hydrogen bonds in the system with different amounts of gas molecules were calculated and compared with the results without an external electric field. The results show that the external electric field can make the size of the bubbles smaller. The diffusion coefficient of the gas increases and the viscosity of the system decreases when the external electric field is applied, which contribute to the reduction of the size of the nanobubbles. At the same time, comparing with the results under no external electric field, the angle of hydrogen bonding under the external electric field will increase, and the proportion of water molecules containing more hydrogen bonds will reduce, which further explains the reason why the external electric field reduces the viscosity. The conclusions of this paper demonstrate at the micro level that the external electric field can enhance the efficiency of air-floating technology for the separation of hydrophobic particles, which may provide meaningful theoretical guidance for the application and optimization of electric field-enhanced air-floating technology in practice.

Graphical abstract: Effect of external electric field on nanobubbles at the surface of hydrophobic particles during air flotation

Back to tab navigation

Publication details

The article was received on 29 Oct 2018, accepted on 02 Jan 2019 and first published on 14 Jan 2019


Article type: Paper
DOI: 10.1039/C8RA08935C
RSC Adv., 2019,9, 1792-1798
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    Effect of external electric field on nanobubbles at the surface of hydrophobic particles during air flotation

    L. Wu, Y. Han, Q. Zhang and S. Zhao, RSC Adv., 2019, 9, 1792
    DOI: 10.1039/C8RA08935C

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements