MEMBRANE FOR WATER FILTRATION

A process for preparing a semi-permeable membrane includes providing an aqueous phase comprising a polyfunctional amine monomer, covering a surface of a porous support membrane with the aqueous phase, applying an organic phase comprising a polyfunctional acyl halide monomer, a phosphorous containing...

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Bibliographische Detailangaben
Hauptverfasser:	TRZASKUS, Krzysztof, SENGUR-TASDEMIR, Reyhan
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A process for preparing a semi-permeable membrane includes providing an aqueous phase comprising a polyfunctional amine monomer, covering a surface of a porous support membrane with the aqueous phase, applying an organic phase comprising a polyfunctional acyl halide monomer, a phosphorous containing compound and a co-solvent, and allowing the polyfunctional amine monomer and the polyfunctional acyl halide monomer to perform an interfacial polymerization reaction to form a polyamide thin film composite layer.The presence of the co-solvent together with the phosphorous compound in the organic phase potentiates the effect of the phosphorous compound so that the water flux is increased without substantially sacrificing the salt rejection.