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Ceramic nanofiltration membranes - examples of application and new developments

: Voigt, Ingolf; Richter, Hannes; Weyd, Marcus; Prehn, Volker

Wessling, M. ; TH Aachen -RWTH-, Lehrstuhl und Institut für Verfahrenstechnik:
10. Aachener Tagung Wasser und Membranen 2013 : Membrantechnik in der Wasseraufbereitung und Abwasserbehandlung; Begleitbuch zur 10. Aachener Tagung Wasser und Membranen, 29. - 30. Oktober 2013
Aachen: Mainz, 2013
ISBN: 3-8107-0178-5
Tagung Wasser und Membranen <10, 2013, Aachen>
Conference Paper
Fraunhofer IKTS ()
Abwasserbehandlung; Membranentwicklung; Zirkonium(IV)oxid; Nanofiltrationsmembran

Ceramic NF membranes have been developed already 12 years ago followed by the commercialization by the company Inopor GmbH. A first plant containing 25 m 2 was installed already in 2002 with a first membrane replacement after 10 years operation in 2012 demonstrating the outstanding stability of the membrane. A lot of different applications have been realized in waste water treatment, product cleaning, biomass treatment as well as catalyst recovery. A few applications came up where the cut-off of the membrane was not sufficient or the flux of the membrane dropped down quickly because of pore blocking. Therefore new developments have been focusing on a further reduction of the cut-off. In addition efforts are aimed at the development of ceramic NF-membranes on monolithic substrates (honeycombs) with 10- 20 m 2/element in order to reduce the production costs by a factor 2-3.