Fabrication of high performance nanofiltration membranes based on the interfacial polymerization regulated by the incorporation of dextran nanoparticles

Desalination ◽  
2022 ◽  
Vol 519 ◽  
pp. 115308
Author(s):  
Yuhao Chen ◽  
Haixiang Sun ◽  
Hongbin Zhang ◽  
Kuo Chen ◽  
Dingdong Chai ◽  
...  
RSC Advances ◽  
2017 ◽  
Vol 7 (68) ◽  
pp. 42800-42810 ◽  
Author(s):  
Shanshan Yang ◽  
Hongyan Zhen ◽  
Baowei Su

High performance solvent resistant nanofiltration membranes are fabricated via interfacial polymerization between m-phenylenediamine and 1,2,4,5-benzenetetra acylchloride on hydrolyzed polyacrylonitrile supports followed by chemical imidization.


Membranes ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 435
Author(s):  
Zhao-Yu Ma ◽  
Yu-Ren Xue ◽  
Zhi-Kang Xu

The deepening crisis of freshwater resources has been driving the further development of new types of membrane-based desalination technologies represented by nanofiltration membranes. Solving the existing trade-off limitation on enhancing the water permeance and the rejection of salts is currently one of the most concerned research interests. Here, a facile and scalable approach is proposed to tune the interfacial polymerization by constructing a calcium alginate hydrogel layer on the porous substrates. The evenly coated thin hydrogel layer can not only store amine monomers like the aqueous phase but also suppress the diffusion of amine monomers inside, as well as provide a flat and stable interface to implement the interfacial polymerization. The resultant polyamide nanofilms have a relatively smooth morphology, negatively charged surface, and reduced thickness which facilitate a fast water permeation while maintaining rejection efficiency. As a result, the as-prepared composite membranes show improved water permeance (~30 Lm−2h−1bar−1) and comparable rejection of Na2SO4 (>97%) in practical applications. It is proved to be a feasible approach to manufacturing high-performance nanofiltration membranes with the assist of alginate hydrogel regulating interfacial polymerization.


Author(s):  
Samaneh Bandehali ◽  
Fahime Parvizian ◽  
Huimin Ruan ◽  
Abdolreza Moghadassi ◽  
Jiangnan Shen ◽  
...  

2021 ◽  
Vol 624 ◽  
pp. 119108
Author(s):  
Huaqing Liu ◽  
Jianzhong Xia ◽  
Kangjie Cui ◽  
Junquan Meng ◽  
Rui Zhang ◽  
...  

2014 ◽  
Vol 465 ◽  
pp. 41-48 ◽  
Author(s):  
Jiaojiao Zhao ◽  
Yanlei Su ◽  
Xin He ◽  
Xueting Zhao ◽  
Yafei Li ◽  
...  

2019 ◽  
Vol 375 ◽  
pp. 121982 ◽  
Author(s):  
Jing Wang ◽  
Rongrong He ◽  
Xinwei Han ◽  
Dechao Jiao ◽  
Junyong Zhu ◽  
...  

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