Enzyme-triggered coatings of tea catechins/chitosan for nanofiltration membranes with high performance

2016 ◽  
Vol 18 (23) ◽  
pp. 6205-6208 ◽  
Author(s):  
Wen-Ze Qiu ◽  
Qi-Zhi Zhong ◽  
Yong Du ◽  
Yan Lv ◽  
Zhi-Kang Xu
Keyword(s):  
Thin Film ◽  
High Performance ◽  
Deposition Process ◽  
Nanofiltration Membranes ◽  
Tea Catechins ◽  
Film Composite ◽  
Thin Film Composite

Skin layers have been fabricated via an enzyme-triggered co-deposition process of natural tea catechins and chitosan for thin film composite nanofiltration membranes with high performance.

scholarly journals Hydrophobic thin film composite nanofiltration membranes derived solely from sustainable sources

2021 ◽  
Author(s):  
Sang-Hee Park ◽  
Abdulaziz Alammar ◽  
Zsolt Fulop ◽  
Bruno A. Pulido ◽  
Suzana P. Nunes ◽  
...  
Keyword(s):  
Thin Film ◽  
High Performance ◽  
Green Solvents ◽  
Nanofiltration Membranes ◽  
Polymer Waste ◽  
Film Composite ◽  
Sustainable Resources ◽  
Thin Film Composite ◽  
Recycled Polymer

High-performance and solvent-resistant TFC membranes fabricated solely from sustainable resources such as plant-based monomers, green solvents and recycled polymer waste.

scholarly journals Polyimide thin film composite (TFC) membranes via interfacial polymerization on hydrolyzed polyacrylonitrile support for solvent resistant nanofiltration

RSC Advances ◽  
2017 ◽  
Vol 7 (68) ◽  
pp. 42800-42810 ◽  
Author(s):  
Shanshan Yang ◽  
Hongyan Zhen ◽  
Baowei Su
Keyword(s):  
Thin Film ◽  
High Performance ◽  
Interfacial Polymerization ◽  
Nanofiltration Membranes ◽  
Film Composite ◽  
Thin Film Composite

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.

scholarly journals Poly(aryl cyanurate)-Based Thin-Film Composite Nanofiltration Membranes

2021 ◽  
Author(s):  
Maria G. Elshof ◽  
Evelien Maaskant ◽  
Mark A. Hempenius ◽  
Nieck E. Benes
Keyword(s):  
Thin Film ◽  
Nanofiltration Membranes ◽  
Film Composite ◽  
Thin Film Composite

pH stable thin film composite polyamine nanofiltration membranes by interfacial polymerisation

2015 ◽  
Vol 478 ◽  
pp. 75-84 ◽  
Author(s):  
Kah P. Lee ◽  
Jumeng Zheng ◽  
Gerrald Bargeman ◽  
Antoine J.B. Kemperman ◽  
Nieck E. Benes
Keyword(s):  
Thin Film ◽  
Nanofiltration Membranes ◽  
Film Composite ◽  
Thin Film Composite

scholarly journals Fabrication of High-Performance Thin-Film Composite Nanofiltration Membrane by Dynamic Calcium-Carboxyl Intra-Bridging during Post-Treatment

Membranes ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 137
Author(s):  
Hongyi Han ◽  
Ruobin Dai ◽  
Zhiwei Wang
Keyword(s):  
Thin Film ◽  
Water Purification ◽  
High Performance ◽  
Rejection Rate ◽  
Post Treatment ◽  
Nanofiltration Membrane ◽  
Film Composite ◽  
Thin Film Composite ◽  
Post Modification

Widespread applications of nanofiltration (NF) and reverse osmosis (RO)-based processes for water purification and desalination call for high-performance thin-film composite (TFC) membranes. In this work, a novel and facile modification method was proposed to fabricate high-performance thin-film composite nanofiltration membrane by introducing Ca2+ in the heat post-treatment. The introduction of Ca2+ induced in situ Ca2+-carboxyl intra-bridging, leading to the embedment of Ca2+ in the polyamide (PA) layer. This post modification enhanced the hydrophilicity and surface charge of NF membranes compared to the pristine membrane. More interestingly, the modified membrane had more nodules and exhibited rougher morphology. Such changes brought by the addition of Ca2+ enabled the significant increase of water permeability (increasing from 17.9 L·m−2·h−1·bar−1 to 29.8 L·m−2·h−1·bar−1) while maintaining a high selectivity (Na2SO4 rejection rate of 98.0%). Furthermore, the intra-bridging between calcium and carboxyl imparted the NF membranes with evident antifouling properties, exhibiting milder permeability decline of 4.2% (compared to 16.7% of NF-control) during filtration of sodium alginate solution. The results highlight the potential of using Ca2+-carboxyl intra-bridging post-treatment to fabricate high-performance TFC membranes for water purification and desalination.

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