Chemical Research in Chinese Universities

, Volume 34, Issue 6, pp 939–944 | Cite as

Molecular Dynamics Simulation: Influence of External Electric Field on Bubble Interface in Air Flotation Process

  • Leichao Wu
  • Yong HanEmail author
  • Qianrui Zhang
  • Lin Zhu
  • Chuanxin Zhang
  • Ruikuan Zhao


Molecular dynamics(MD) simulation was performed to investigate the influence of external electric field on the vapour-liquid interface of the bubble during the process of toluene separation by air flotation. The physico-chemical properties of vapour-liquid interface, surface tension, probability of a hydrogen bonding near the vapour-liquid interface and the viscosity of liquid phase caused by external electric field were analyzed. The results show that the angle between the water molecule dipole moment and the normal z axis in the vapour phase changes smaller when the external electric field is applied. The surface tension and the probability of hydrogen bonding near the vapour-liquid interface increase with the increase of electric field strength. And the viscosity also increases under an external electric field. The results confirm that the external electric field has a positive effect on the performance of bubbles in air flotation, which may provide useful guidance for the combination of electric field and air flotation technology.


Molecular dynamics simulation Vapour-liquid interface Air flotation Electric field Toluene 


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Copyright information

© Jilin University, The Editorial Department of Chemical Research in Chinese Universities and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Leichao Wu
    • 1
  • Yong Han
    • 1
    Email author
  • Qianrui Zhang
    • 1
  • Lin Zhu
    • 1
  • Chuanxin Zhang
    • 1
  • Ruikuan Zhao
    • 1
  1. 1.Key Laboratory of Measurement Technology and Instrumentation of Hebei Province, School of Electrical EngineeringYanshan UniversityQinhuangdaoP. R. China

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