文献类型：期刊文献

英文题名：Effect of salt addition on the coalescence process of droplets on fiber

作者：Zhang, Yan[1];Yan, Shenglin[2];Bai, Zhishan[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, State Environm Protect Key Lab Environm Risk Asses, Shanghai, Peoples R China;[2]Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai, Peoples R China

年份：2023

卷号：274

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20231413852616);WOS:【SCI-EXPANDED(收录号:WOS:001053673900001)】；

基金：The research was sponsored by the National Science Fund for Distinguished Young Scholars, China (22225804) , and the National Natural Science Foundation of China, China (22078102) , for which the authors express their appreciation.

语种：英文

外文关键词：Coalescence; Salt; Fiber; DLVO; Morphological evolution

摘要：Fiber coalescence is an economical and effective technology for the treatment of oily wastewater. In this paper, the microscopic coalescence process of salt droplets on the fiber is studied using a high-speed camera and PIV, and the effect of salt on hydrodynamics and morphological evolution is discussed. The results show that the increase of salt concentration leads to a decrease of double layer force, a larger liquid bridge expansion, and a higher capillary wave propagation velocity. When the salt concentration is too high, the capillary wave propagation velocity decreases. A catchment region with a high velocity is formed near the traveling region of the capillary wave, and the velocity can reach 0.03 m/s. The attenu-ation coefficient of the oscillation process increases with the increase of salt content. By combining fiber and salt, the rate of droplet coalescence can be increased, and the production of secondary droplets can be reduced.& COPY; 2023 Published by Elsevier Ltd.