Development of high permeability nanofiltration membranes through porous 2D MOF nanosheets

Interfacial polymerization of polyamide was conducted using hydrophobic and hydrophilic membrane support. The effects of monomer concentration were investigated, and the resulting thin-film composite membranes were tested for their performance in dye removal using different flow configurations. The results showed that a dense polyamide layer was successfully formed on the hydrophilic support, while a polyamide layer with a very loose structure was formed on the hydrophobic support. The polyamide layer became smoother and more hydrophilic as the concentration of trimesoyl chloride was increased, leading to increased permeate flux and reduced dye rejection. The highest sunset yellow rejection of 45.7% with a permeate flux of 4.9 L/m2.h was obtained when the polyamide layer was formed from trimesoyl chloride concentration of 0.05 w/v% (a high amine to acid chloride monomer ratio of 20) and the filtration was in cross-flow configuration.

Interfacial polymerization

Thin-film composite membrane

10.23955/rkl.v16i2.20337

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Citations (0)

Photocatalytic oxidation of natural organic matter enhanced with microfiltration and nanofiltration

Desalination and Water Treatment (2015)

Mariola Rajca

In the article, the results of the study on the effectiveness of removal of natural organic matter from simulated water containing fulvic (FA) and humic (HA) acids as well as natural water contaminated with a mixture of organic compounds are presented. The treatment process comprises a photocatalytic microfiltration reactor (PhMFR), the operation of which was supported with nanofiltration (NF). The photocatalysis process was performed with the use of TiO2 P25 catalyst and immersed UV low-pressure lamps. Microfiltration was carried out with the use of a capillary membrane module—MICROZA, while NF with a flat-sheet composite membrane. It was found that such a configuration of the water treatment process, which resulted in a highly effective removal of natural organic compounds, could be successfully applied in practice.

Nanofiltration

Natural Organic Matter

10.1080/19443994.2014.1002280

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Citations (4)

Synthesis of 4-Aminobenzoylpiperazine for Preparing the Thin Film Composite Nanofiltration Membrane by Interfacial Polymerization with TMC

Separation Science and Technology (2013)

Lihong Wang Deling Li Li‐Hua Cheng Lin Zhang Huan‐Lin Chen

Abstract A new synthesis method of aromatic diamine, 4-aminobenzoylpiperazine (4-ABP), was studied from 4-aminobenzoic acid and 1-formyl piperazine for the preparation of nanofiltration membrane. The structure of 4-ABP was identified by FT-IR spectra and 1H NMR spectra. The resulting 4-ABP was used as aqueous monomer to fabricate a thin film on porous polyethersulfone (PES) ultra filtration membranes by interfacial polymerization (IP) with trimesoyl chloride (TMC) as organic monomer. The salt rejection order of these thin film composite (TFC) nanofiltration(NF) membranes is Na2SO4>MgSO4>MgCl2>NaCl. This sequence indicated that the membranes were negatively charged. Keywords: 4-aminobenzoylpiperazinenanofiltrationthin film composite membranetrimesoyl chloride ACKNOWLEDGEMENTS This project is sponsored by the National Basic Research Program of China (2009CB623402), the National Natural Science Foundation of China (21076167), the Fundamental Research Funds for the Central Universities and the R&D Project of Tangshan city (10140201C-3).

Nanofiltration

Interfacial polymerization

Thin-film composite membrane

Piperazine

10.1080/01496395.2012.685546

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Citations (9)

Tröger's base-regulated interfacial polymerization of polyamide nanofiltration membranes with enhanced performance

Journal of Membrane Science (2023)

Shuqi Liu Zhenggong Wang Lu Zhao Wangxi Fang Feng Zhang

Nanofiltration

Interfacial polymerization