文献类型：期刊文献

英文题名：Millisecond-scale adhesion of petroleum hydrocarbon pollutants in wastewater based on roughness control of separation media: Mechanism and performance

作者：Liu, Bing[1,2];Wei, Qi[3];Bai, Jinhao[3];Bao, Jinfeng[2];Zhu, Liang[1];Xie, Boming[2];Liu, Mingxuan[2];Yang, Danhui[3,4];Lv, Wenjie[3];Wang, Hualin[3]

机构：[1]Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310085, Peoples R China;[2]Zhejiang Kaichuang Environm Technol Co Ltd, Hangzhou 311121, Peoples R China;[3]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Minist Educ Hydrogen Energy Green Mfg & Utilizat K, Shanghai 200237, Peoples R China

年份：2025

卷号：498

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20253719149348);WOS:【SCI-EXPANDED(收录号:WOS:001583598700004)】；

基金：This work was supported by the sponsorship of the National Natural Science Foundation of China (Grant No. 52322003, 52170075) and Shanghai Excellent Academic/Technical Leaders Program (23XD1431900) .

语种：英文

外文关键词：Petroleum hydrocarbon; Surface roughness; Millisecond-scale adhesion; Disjoining pressure; Water film drainage

摘要：Wettability material coalescence technology offers an efficient and low-consumption solution for oil-water separation. Special wettability is achieved by adjusting the surface roughness of the coalescing medium, rather than relying on chemical modifications, making it an environmentally friendly approach. Here, we systematically investigated the performance and mechanisms of medium roughness on the drainage and adhesion processes of oil droplets using high-speed camera visualization, theoretical modeling, and experimental validation. High-speed camera visualization results show that droplets exhibit millisecond-scale adhesion on rough surfaces. The proposed theoretical model shows that increased surface roughness reduces the disjoining pressure barrier in the water film by 177.28 times, while the long-range hydrophobic interaction from nanobubbles increases the water film rupture thickness to 50 nm. These factors together shorten the water film drainage time from 181.21 ms to 1.66 ms. The shortening of the drainage time leads to a significant increase in the statistical adhesion probability of oil droplets from 4.85 % to 75.71 %, which is further manifested as an increase in the macroscopic oil-water separation efficiency by a factor of 2.76 times. This research offers a theoretical method for oil-water separation based on media roughness regulation and highlights the potential of rough hydrophilic media in such applications.