纳滤
膜
薄膜复合膜
材料科学
哌嗪
复合数
化学工程
酰胺
复合薄膜
废水
聚酰胺
复合材料
高分子化学
化学
废物管理
有机化学
工程类
反渗透
生物化学
作者
Asad Asad,Sadegh Aghapour Aktij,Pooria Karami,Dan Sameoto,Mohtada Sadrzadeh
出处
期刊:ACS applied polymer materials
[American Chemical Society]
日期:2021-11-16
卷期号:3 (12): 6653-6665
被引量:21
标识
DOI:10.1021/acsapm.1c01096
摘要
The sustainable growth of industries that consume a large amount of fresh water relies on developing energy-efficient wastewater treatment processes. Nanofiltration (NF) has been widely considered for such purposes; however, the fabrication of highly permeable NF membranes while maintaining a high removal rate of ions and organic matter remains a big challenge. Here, we fabricated micropatterned thin-film composite (TFC) NF membranes using a two-step process. First, a hydrogel-facilitated phase separation (HFPS) method was used to prepare micropatterned poly(ether sulfone) (PES) substrates. Then, a thin dense polyamide (PA) film was formed on top of the patterned PES substrates using an interfacial polymerization reaction between piperazine (PIP) and trimesoyl chloride (TMC) monomers. The fabricated TFC membranes, micropatterned and unpatterned, possessed a high negatively surface charge, hydrophilicity, and a smooth surface roughness. Moreover, the filtration performance of the fabricated membranes was evaluated through the separation of different salts (e.g., MgSO4, Na2SO4, and NaCl), reactive black 5 dye, and methyl orange dye, and the treatment of real oil sands produced water. The TFC-patterned membrane with 0.25 wt % PIP showed an ∼96 increase in the water flux compared with an unpatterned one with a less than 10% reduction in the separation performance for the aforementioned solutes due to the increase in the surface area.
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