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Citation link: https://doi.org/10.26092/elib/2493

Publisher DOI: https://doi.org/10.1016/j.memsci.2018.10.022
J. Bartels, A.G. Batista, S. Kroll, M. Maas, K. Rezwan, Hydrophobic ceramic capillary membranes for versatile virus filtration_2019_accepted version.pdf
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Hydrophobic ceramic capillary membranes for versatile virus filtration


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J. Bartels, A.G. Batista, S. Kroll, M. Maas, K. Rezwan, Hydrophobic ceramic capillary membranes for versatile virus filtration_2019_accepted version.pdf1.54 MBAdobe PDFView/Open
Authors: Bartels, Julia  
Batista, Artur Guedert 
Kroll, Stephen  
Maas, Michael  
Rezwan, Kurosch  
Abstract: 
In this study, we present hydrophobic yttria-stabilized zirconia capillary membranes conditioned for virus filtration. These macroporous ceramic filters (d50 = 150 nm) efficiently extract viruses regardJess of their surface charge with high throughput rates. For hydrophobic functionalization of the ceramic membranes we used two different silanes, n-hexyltriethoxysilane (HTS, C6-chain) and n-octyltriethoxysilane (OTS, C8-chain), in three different molarities. The virus retention of the membranes is tested in dead-end mode by intracapillary virus feeding using two small bacteriophages as model species: MS2 and PhiX174. Virus retention increases most strongly for hydrophobic capillaries functionalized with 0.05 M OTS, showing a virtually complete retention with log-reduction values (LRVs) of - 9 for both bacteriophages compared to the non-functionalized membrane with LRVs of 0.3 ± 0.1 for MS2 and 3.4 ± 0.2 for PhiXl 74. The functionalized membranes allow a high membrane flux of - 150 L/(m2hbar), with throughput rates up to - 400 L/(m2 h) while maintaining high filtration efficiency. Even under varying feed conditions using only mono- or divalent salt ions or pH values ranging from 3 to 9, retention capacities of the capillary membranes are high. Accordingly, such
hydrophobic ceramic membranes offer a versatile alternative to conventional polymeric membranes for virus removal with greatly improved membrane flux.
Keywords: Mimenima
Issue Date: 23-Oct-2018
Publisher: Elsevier
Project: MIMENIMA GRK 1860 
Funders: Deutsche Forschungsgemeinschaft
Grant number: 601090
Journal/Edited collection: Journal of Membrane Science 
Start page: 85
End page: 92
Band: 570-571
Pages: 8
Type: Artikel/Aufsatz
ISSN: 03767388
Secondary publication: yes
Document version: Postprint
DOI: 10.26092/elib/2493
URN: urn:nbn:de:gbv:46-elib71734
Institution: Universität Bremen 
Faculty: Fachbereich 04: Produktionstechnik, Maschinenbau & Verfahrenstechnik (FB 04) 
Institute: MAPEX Center for Materials and Processes 
Appears in Collections:Forschungsdokumente

  

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