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Nanofiltrationsmembranen für Trennprobleme in organischen Lösungen
Author(s) -
Schmidt Matthias,
Mirza Sohail,
Schubert Rolf,
Rödicker Em. Herbert,
Kattanek Siegfried,
Malisz Jaček
Publication year - 1999
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.330710304
Subject(s) - nanofiltration , membrane , ultrafiltration (renal) , aqueous solution , reverse osmosis , chemistry , thin film composite membrane , membrane technology , chemical engineering , organic solvent , solvent , chromatography , organic chemistry , biochemistry , engineering
Nanofiltration Membranes for Separation Problems in Organic Solutions . Nanofiltration based on rejection and flux features intermediate between those ultrafiltration and reverse osmosis is one of the technically and scientifically interesting membrane processes with a great future. Moreover, most commercial available nanofiltration membranes are only suitable for separation processes in aqueous solutions. A small number of composite membranes with a highly cross‐linked selective layer show a technically interesting resistance towards organic solvents, such as ketones, esters, ethers or alcohols. The present article describes such nanofiltration membranes used for separation of low molecular weight chemical compounds from polar or nonpolar solvents, but also for the removal of organic compound from aqueous solutions. Methods of manufacturing and modifying such solvent stable composite membranes are shown, as are the conditioning of membranes and examples of industrial application.