Fabrication and characterization of a novel nanofiltration membrane by the interfacial polymerization of 1,4-diaminocyclohexane (DCH) and trimesoyl chloride (TMC)

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 40742-40752 ◽  
Author(s):  
Gui-E. Chen ◽  
Yan-Jun Liu ◽  
Zhen-Liang Xu ◽  
Yong-Jian Tang ◽  
Hui-Hong Huang ◽  
...  
Keyword(s):  
Thin Film ◽  
Significant Influence ◽  
Interfacial Polymerization ◽  
Nanofiltration Membrane ◽  
Film Composite ◽  
Thin Film Composite ◽  
Fabrication And Characterization ◽  
Polyamide Membrane ◽  
Trimesoyl Chloride

A novel thin-film composite polyamide membrane for nanofiltration is prepared, and the addition of sodium N-cyclohexylsulfamate is found to have a significant influence on its performance.

scholarly journals Removal of multiple pesticide residues from water by low-pressure thin-film composite membrane

2020 ◽  
Vol 10 (12) ◽  
Author(s):  
Ayan Mukherjee ◽  
Romil Mehta ◽  
Soumen Saha ◽  
A. Bhattacharya ◽  
Pabitra Kumar Biswas ◽  
...  
Keyword(s):  
Thin Film ◽  
Interfacial Polymerization ◽  
Water Flux ◽  
Size Exclusion ◽  
Film Composite ◽  
Thin Film Composite ◽  
Gas And Liquid Chromatography ◽  
Pass Through ◽  
Polyamide Membrane ◽  
Trimesoyl Chloride

AbstractThe study evaluated removal efficiency of 43 pesticides from water by thin-film composite polyamide membrane indigenously prepared by interfacial polymerization of 1,3-phenylenediamine and 1,3,5 trimesoyl chloride coated on asymmetric polysulfone support. Membrane performance was evaluated by gas and liquid chromatography mass spectroscopy determination of multiple pesticides remaining in feed and permeated water following the application of pesticides each @ 0.02, 0.05, and 0.10 mg/L in de-ionized water. The membrane was most efficient in the rejection of persistent organochlorine insecticides, viz. endosulfans (100%), dichlorodiphenyltrichloroethane (95%), and hexachlorocyclohexane (92%). Out of 43 selected pesticides, 33 were removed by > 80%. Size exclusion mass transfer played a significant role for molecules to pass through the membrane as observed for endosulfan isomers, endosulfan sulphate, and difenoconazole with molecular weight > 400. Pesticide rejection was also related to hydrophobicity (Log P). Hydrophobic pesticides with log P > 4.5 were rejected by > 80%, while monocrotophos with less hydrophobicity (log P = − 0.22) exhibited poor rejection (38%). Water flux decreased with an increase in pesticide concentration. The process of pesticide filtration was optimized at 200 psi. The results indicated the potential of the membrane to remove pesticides from water.

scholarly journals Zwitterion Co-Polymer PEI-SBMA Nanofiltration Membrane Modified by Fast Second Interfacial Polymerization

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 269 ◽  
Author(s):  
Yu-Hsuan Chiao ◽  
Tanmoy Patra ◽  
Micah Belle Marie Yap Ang ◽  
Shu-Ting Chen ◽  
Jorge Almodovar ◽  
...  
Keyword(s):  
Thin Film ◽  
Wastewater Treatment ◽  
Large Scale ◽  
Interfacial Polymerization ◽  
Antibacterial Properties ◽  
Operating Conditions ◽  
Nanofiltration Membrane ◽  
Nanofiltration Membranes ◽  
Film Composite ◽  
Thin Film Composite

Nanofiltration membranes have evolved as a promising solution to tackle the clean water scarcity and wastewater treatment processes with their low energy requirement and environment friendly operating conditions. Thin film composite nanofiltration membranes with high permeability, and excellent antifouling and antibacterial properties are important component for wastewater treatment and clean drinking water production units. In the scope of this study, thin film composite nanofiltration membranes were fabricated using polyacrylonitrile (PAN) support and fast second interfacial polymerization modification methods by grafting polyethylene amine and zwitterionic sulfobutane methacrylate moieties. Chemical and physical alteration in structure of the membranes were characterized using methods like ATR-FTIR spectroscopy, XPS analysis, FESEM and AFM imaging. The effects of second interfacial polymerization to incorporate polyamide layer and ‘ion pair’ characteristics, in terms of water contact angle and surface charge analysis was investigated in correlation with nanofiltration performance. Furthermore, the membrane characteristics in terms of antifouling properties were evaluated using model protein foulants like bovine serum albumin and lysozyme. Antibacterial properties of the modified membranes were investigated using E. coli as model biofoulant. Overall, the effect of second interfacial polymerization without affecting the selectivity layer of nanofiltration membrane for their potential large-scale application was investigated in detail.

Synthesis and characterization of a polyamide thin film composite membrane based on a polydopamine coated support layer for forward osmosis

RSC Advances ◽  
2015 ◽  
Vol 5 (128) ◽  
pp. 106113-106121 ◽  
Author(s):  
Yangbo Huang ◽  
Haiyang Jin ◽  
Hao Li ◽  
Ping Yu ◽  
Yunbai Luo
Keyword(s):  
Thin Film ◽  
Composite Membrane ◽  
High Performance ◽  
Interfacial Polymerization ◽  
Forward Osmosis ◽  
Synthesis And Characterization ◽  
Film Composite ◽  
Thin Film Composite Membrane ◽  
Thin Film Composite

In this study, a facile method has been developed to prepare high performance thin film composite forward osmosis membranes, which was conducted by coating the surface of a polysulfone substrate with polydopamine prior to the interfacial polymerization.

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