文献类型：期刊文献

英文题名：Thin-Film Composite Nanofiltration Membrane Modified by Fulvic Acid to Enhance Permeability and Antifouling Performance

作者：Wu, Zhao-Jun[1];Li, Hua-Xiang[1];Li, Ping-Ping[1];Xu, Zhen-Liang[1];Zhan, Zi-Ming[1];Wu, Yu-Zhe[1]

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

年份：2022

卷号：61

期号：25

起止页码：8993

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20222812332545);WOS:【SCI-EXPANDED(收录号:WOS:000818993300001)】；

基金：We gratefully acknowledge the financial support from the National Natural Science Foundation of China (22078092 and 21978082) and State Key R&D Program of China (2021YFB3801103 and 2021YFB3801101).

语种：英文

外文关键词：Additives - Chlorine compounds - Nanofiltration - Organic acids - Sodium sulfate - Substrates - Thin films

摘要：A novel thin-film composite (TFC) nanofiltration (NF) membrane was manufactured by interfacial polymerization (IP) with addition of the additive fulvic acid (FA) into the piperazine (PIP) aqueous solution onto a poly(m-phenylene isophthalamide) (PMIA) substrate. The aqueous phase additive FA can effectively modify the PA layer structure by slowing down the diffusion of the PIP monomer and reacting with trimesoyl chloride (TMC) to generate ester groups. The pure water permeability (PWP) of the optimized NF membrane enhanced from 10.4 to 22.3 L m(-2) h(-1) bar(-1), and the Na2SO4 rejection remained above 97.8%. The outstanding performance benefited from superior hydrophilicity, enlarged pores, and a relatively thin separation layer. Furthermore, the obtained NF membrane presented ascendant thermal stability, long-term stability, and fouling resistance. Therefore, this work offers novel insight into regulation of the PA layer structure and promotion of NF membrane performance.