Nanostructured surface modification of microporous ceramics for efficient virus filtration

✍ Scribed by Markus Wegmann; Benjamin Michen; Thomas Graule

• Book ID: 104022830
• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 847 KB
• Volume: 28
• Category: Article
• ISSN: 0955-2219
• DOI: 10.1016/j.jeurceramsoc.2007.11.002

✦ Synopsis

The aim of this study was to develop a depth filter working on the electrostatic adsorption principle based on a microporous diatomaceous earth water filter element. The internal surface area of the highly porous elements was coated with a colloidal nanodispersion of hydrated yttrium oxide and subsequently heat-treated under reducing conditions to yield filters featuring uniformly distributed electropositive Y 2 O 3 coatings. Filters prepared in this fashion exhibit a flowrate of 60 l/h at 3 bar and remove in excess of 99.99% of 25 nm diameter MS2 bacteriophages from feed water between pH 5 and 9.