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Citation link: https://doi.org/10.26092/elib/2617

Publisher DOI: https://doi.org/10.1016/j.jeurceramsoc.2020.07.069
SILVA - Porous asymmetric microfiltration membranes.pdf
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Porous asymmetric microfiltration membranes shaped by combined alumina freeze and tape casting


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Authors: Silva, Angelo Oliveira 
Hotza, Dachamir  
Machado, Ricardo 
Rezwan, Kurosch  
Wilhelm, Michaela  
Abstract: 
An assembled asymmetric alumina microfiltration membrane with high performance was prepared by combining freeze and tape casting techniques followed by two sintering steps. Freeze casting was used for manufacturing of the porous support layer with a highly interconnected pore network. Tape casting was applied on the top layer to form a pre-membrane with smaller pore size and controlled thickness, which was set on the sintered support. Morphology influences were investigated for different solid loadings, additives content and the assembled layer membrane structures. No delamination among the layers was observed. The assembled ceramic membrane had an average pore size between 30 and 50 μm together with a top surface layer around 0.35 μm,
which is suitable to the microfiltration separation process. Porosity in the range of 26–50 % and water flux of 11–32 m3 m−2 h−1 bar−1 were reached for samples prepared with two sintering steps at 1600 and 1300 °C for 2 h.
Keywords: Asymmetric membrane; Water permeability; Alumina; Freeze casting; Tape casting
Issue Date: 23-Oct-2020
Publisher: Elsevier {BV}
Project: Brazilian Council for Scientific and Technological Development (CNPq) 
German Research Foundation (DFG) 
Grant number: WI 3131/5-1
Journal/Edited collection: Journal of the European Ceramic Society 
Issue: 1
Start page: 871
End page: 879
Volume: 41
Pages: 9
Type: Artikel/Aufsatz
ISSN: 09552219
Secondary publication: yes
Document version: Postprint
DOI: 10.26092/elib/2617
URN: urn:nbn:de:gbv:46-elib73837
Institution: Universität Bremen 
Faculty: Fachbereich 04: Produktionstechnik, Maschinenbau & Verfahrenstechnik (FB 04) 
Institute: Fachgebiet 17: Keramische Werkstoffe und Bauteile 
Appears in Collections:Forschungsdokumente

  

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