Carboxyl-free polyamide reverse osmosis membrane with sustainable anti-fouling performance in treating industrial coke wastewater

IF 11.4 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Water Research Pub Date : 2025-03-13 DOI:10.1016/j.watres.2025.123495

Yongkai Xu, Shuang Hao, Dingxian Jia, Yiwen Qin, Jianxiao Wang, Jie Gao, Jun Xiao, Yunxia Hu

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Abstract

Carboxyl groups in polyamide (PA) reverse osmosis (RO) membrane contribute significantly to fouling and scaling, hindering the sustainable operation of RO in practical applications. Herein, we developed a novel interfacial polymerization (IP) strategy to finely engineer the molecular structure of PA with no carboxyl groups, and to significantly enhance RO membrane fouling/scaling-resistance. During IP, trimesoyl chloride (TMC) at the interface was consumed completely by the diffused m-phenylenediamine (MPD) and glycerol (GLY) under the assistance of benzalkonium chloride (BAC) surfactant. The fabricated RO membrane with no carboxyl groups exhibits sustainable anti-fouling performance with low flux decline ratios and high flux recovery ratios during the five cycles of fouling and cleaning when treating real coke wastewater, surpassing the reported anti-fouling membranes and the renowned commercial fouling-resistant RO membrane (DuPont FilmTec™ CR100). This work provides some insights to precisely tailor the molecular structure of PA RO membrane with sustainable anti-fouling performance.

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来源期刊

Water Research 环境科学-工程：环境

CiteScore

20.80

自引率

9.40%

发文量

1307

审稿时长

38 days

期刊介绍： Water Research, along with its open access companion journal Water Research X, serves as a platform for publishing original research papers covering various aspects of the science and technology related to the anthropogenic water cycle, water quality, and its management worldwide. The audience targeted by the journal comprises biologists, chemical engineers, chemists, civil engineers, environmental engineers, limnologists, and microbiologists. The scope of the journal include: •Treatment processes for water and wastewaters (municipal, agricultural, industrial, and on-site treatment), including resource recovery and residuals management; •Urban hydrology including sewer systems, stormwater management, and green infrastructure; •Drinking water treatment and distribution; •Potable and non-potable water reuse; •Sanitation, public health, and risk assessment; •Anaerobic digestion, solid and hazardous waste management, including source characterization and the effects and control of leachates and gaseous emissions; •Contaminants (chemical, microbial, anthropogenic particles such as nanoparticles or microplastics) and related water quality sensing, monitoring, fate, and assessment; •Anthropogenic impacts on inland, tidal, coastal and urban waters, focusing on surface and ground waters, and point and non-point sources of pollution; •Environmental restoration, linked to surface water, groundwater and groundwater remediation; •Analysis of the interfaces between sediments and water, and between water and atmosphere, focusing specifically on anthropogenic impacts; •Mathematical modelling, systems analysis, machine learning, and beneficial use of big data related to the anthropogenic water cycle; •Socio-economic, policy, and regulations studies.