文献类型：期刊文献

英文题名：Microscopic insights into the intensification effect of shear fields on molecular transport across interfaces

作者：Yu, Hongping[1,2];Song, Xianyu[1,2];Luo, Jianhui[1,2,3,4];Zhao, Guolin[1,2];Bao, Bo[1,2];Peng, Baoliang[3,4];Zhao, Shuangliang[1,2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[3]PetroChina, RIPED, Beijing 100083, Peoples R China;[4]CNPC, KLNC, Beijing 100083, Peoples R China

年份：2020

卷号：215

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20195107877179);WOS:【SCI-EXPANDED(收录号:WOS:000520029300024)】；

基金：This work is supported by National Natural Science Foundation of China (Nos. 21808056, 21878078), by the Shanghai Science and Technology Innovation Action Plan (18160743700), and by PetroChina Scientific Research and Technology Development Project (2018A-0907).

语种：英文

外文关键词：Solute transport; Interface; Shear field; Surfactant; Dissipative Particle Dynamics

摘要：Shear field is widely applied to intensify interfacial molecular transport in many chemical engineering processes, and the intensification effect is generally ascribed to the significant increase of contact area between two immiscible liquid phases. Herein, by investigating molecular transport across waterbenzene interfaces under different shear fields as a representative study, we show that the interfacial molecular transport per unit area of the interface can be also enhanced by shear field when surfactants are introduced. The microscopic mechanism towards the latter effect is extensively explored by means of Dissipative Particle Dynamics simulation at various shear rates (0-0.3 ps(-1)) and surfactant volume fractions (0-7.1%), and we find that shear flows inhibit the accumulation of surfactants at the interface, and align the remained surfactants along the direction of mass transport, thus enhancing the molecular transfer across the interface. This work provides a microscopic insight into the regulation of interfacial transport with shear flow. (C) 2019 Published by Elsevier Ltd.