Removal of Organic Compounds with an Amino Group during the Nanofiltration Process

The research covered the process of nanofiltration of low molecular weight organic compounds in aqueous solution. The article presents the results of experiments on membrane filtration of compounds containing amino groups in the aromatic ring and comparing them with the results for compounds without...

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Bibliographic Details
Published in:Membranes (Basel) 2021-12, Vol.12 (1), p.58
Main Authors: Żyłła, Renata, Foszpańczyk, Magdalena, Olak-Kucharczyk, Magdalena, Marszałek, Joanna, Ledakowicz, Stanisław
Format: Article
Language:English
Subjects:
amines
Amino acids
Amino groups
Aqueous solutions
Aromatic compounds
Carboxyl group
Chemical compounds
Chemical oxygen demand
Diclofenac
Drinking water
hazardous compounds
Low molecular weights
Membrane filtration
Membranes
Molecular weight
Nanofiltration
Nanotechnology
Nonsteroidal anti-inflammatory drugs
Organic compounds
Organic matter
Oxidation
Ozonation
Pharmaceuticals
Pollutants
Polymers
Retention
Rivers
Water treatment
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Summary:The research covered the process of nanofiltration of low molecular weight organic compounds in aqueous solution. The article presents the results of experiments on membrane filtration of compounds containing amino groups in the aromatic ring and comparing them with the results for compounds without amino groups. The research was carried out for several commercial polymer membranes: HL, TS40, TS80, DL from various manufacturers. It has been shown that the presence of the amino group and its position in relation to the carboxyl group in the molecule affects the retention in the nanofiltration process. The research also included the oxidation products of selected pharmaceuticals. It has been shown that 4-Amino-3,5-dichlorophenol-a oxidation product of diclofenac and 4-ethylbenzaldehyde-a oxidation product of IBU, show poor separation efficiency on the selected commercial membranes, regardless of the pH value and the presence of natural organic matter (NOM). It has been shown that pre-ozonation of natural river water can improve the retention of pollutants removed.
ISSN:2077-0375
2077-0375
DOI:10.3390/membranes12010058