Bactericidal effect of zinc oxide nanoparticles on Gram-positive and Gram-negative strains for water decontamination using reverse spin technology

0537882 - FZÚ 2021 RIV CZ eng A - Abstract
Rutherford, D. - Jíra, J. - Kolářová, Kateřina - Remeš, Zdeněk - Rezek, B.
Bactericidal effect of zinc oxide nanoparticles on Gram-positive and Gram-negative strains for water decontamination using reverse spin technology.
Book of Abstracts of the 30^th Joint Seminar of the Development of Materials Science in Research and Education. Praha: Institute of Physics of the Czech Academy of Sciences, 2020 - (Kožíšek, Z.; Král, R.; Zemenová, P.). s. 53-53. ISBN 978-80-907237-1-9.
[Joint Seminar of the Development of Materials Science in Research and Education /30./. 07.09.2020-11.09.2020, Pavlov]
R&D Projects: GA ČR GC19-02858J
Institutional support: RVO:68378271
Keywords : ZnO * nanoparticles * water decontamination * S. aureus * E. coli
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)

We present an experimental study investigating the efficacy of zinc oxide nanoparticle use for water decontamination. A range of concentrations of commercially available spherical 50 nm zinc oxide particles were added to deionised water spiked with bacteria in a final volume of 40 mL contained inside a reverse spin bioreactor. The bioreactor rotated the bacteria-nanoparticle suspension at a defined speed (200 rpm) and duration (5 seconds) in one direction, then in the other direction to ensure constant mixing and enhanced interaction capability. The number of viable bacteria reduced with treatment time, and the rate of inactivation was concentration dependent. Gram-positive S. aureus bacteria were more resistant to zinc oxide nanoparticles compared to Gram-negative E. coli.
Permanent Link: http://hdl.handle.net/11104/0317492