文献类型：期刊文献

英文题名：Wetting-Governed Heterogeneous Nucleation on Corrugated Reverse Osmosis Membranes: f(θ) Outperforms Ra as a Predictor of Scaling

作者：Yi, Yuxuan[1];Bai, Rui[1];Xu, Zhen-Liang[1];Cheng, Liang[1];Tang, Yong-Jian[1]

机构：[1]East China Univ Sci & Technol, Chem Engn Res Ctr, Sch Chem Engn, State Key Lab Chem Engn,Membrane Sci & Engn R&D La, Shanghai 200237, Peoples R China

年份：2026

卷号：65

期号：5

起止页码：2706

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20260920196404);WOS:【SCI-EXPANDED(收录号:WOS:001677360300001)】；

基金：The authors are thankful for the funding support provided by 2023 Shantou Fine Chemical Enterprises Program for Introducing Leading Scientific Talent Teams and Advancing Import Substitution Technology Special Project (STKJ258) and the National Natural Science Foundation of China (21808060).

语种：英文

外文关键词：Composite membranes - Microfiltration - Nucleation - Osmosis membranes - Reverse osmosis - Surface roughness

摘要：Roughness plays an important role in scaling on reverse osmosis (RO) membranes, yet the underlying mechanisms remain unclear. Here, we investigate the scaling behavior of three polyamide composite RO membranes (RO-L, RO-M, and RO-H) with systematically varied surface roughness. By tracking scaling evolution and introducing a wetting factor, f(theta), we elucidate how the surface microstructure regulates heterogeneous nucleation. Membranes with lower f(theta) values exhibited a delayed scaling onset (flux decline <20%), attributed to a larger effective filtration area and enhanced local turbulence that suppressed early gypsum deposition. However, their ridge-like structures also led to more irreversible scaling. Notably, f(theta) showed a stronger correlation with scaling propensity than average roughness (Ra), highlighting wetting characteristics as a more reliable descriptor.