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

作     者：WU Leichao HAN Yong ZHANG Qianrui ZHU Lin ZHANG Chuanxin ZHAO Ruikuan 无

作者机构：Key Laboratory of Measurement Technology and Instrumentation of Hebei Province School of Electrical Engineering Yanshan University Qinhuangdao 066004 P. R. China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：2018年第34卷第6期

页      面：939-944页

核心收录：

学科分类：081704[工学-应用化学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0817[工学-化学工程与技术] 081701[工学-化学工程] 

基　　金：Supported by the National Natural Science Foundation of China(No. 51408525) 

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

摘      要：Molecular dynamics（MD） simulation was performed to investigate the influence of external electric field on the vapottr-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 tinder 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.