Response to shock loads of engineered nanoparticles (TiO2, SiO2 OR ZrO2) on activated sludge microbial communities

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F18%3A00005464" target="_blank" >RIV/46747885:24620/18:00005464 - isvavai.cz</a>
Result on the web
<a href="https://nanocon2018.tanger.cz/files/uploads/01/NANOCON2017_Proceedings_content.pdf" target="_blank" >https://nanocon2018.tanger.cz/files/uploads/01/NANOCON2017_Proceedings_content.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Response to shock loads of engineered nanoparticles (TiO2, SiO2 OR ZrO2) on activated sludge microbial communities
Original language description
The environmental impact of the use of engineered nanoparticles (NPs) is undeniable based on many studies. Considering that NPs end up in wastewater treatment systems, the potential impact of selected NPs (TiO2, SiO2 or ZrO2) on the activated sludge, especially on Microthrix parvicella or Nocardia bacteria cells, was investigated using laboratory-scale batch reactors through short-term, 7-day exposure to 100, 200, 300 mg/L of NPs. Changes in the oxygen uptake rate (through respirometric measurements), viability of cell (fluorescence microscopy using a live/dead analysis), morphology of flocks or filaments (based on Gram staining and image analysis) and fluorescence in situ hybridization (FISH) of the activated sludge compared with the controls were investigated. The shock loads of NPs caused no lethal effects on activated sludge. The presence of NPs in the activated sludge (depending on the concentration) supported the presence of Nocardia cells in the case of TiO2 (oxygen consumption was maintained); however, SiO2 and ZrO2 NPs caused a restriction in the activity of the sludge (oxygen consumption and Microthrix parvicella cell presence); viability was not significantly affected for any of the NPs or concentrations.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
NANOCON 2017 - Conference Proceedings, 9th International Conference on Nanomaterials - Research and Application
ISBN
978-80-87294-81-9
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
404-409
Publisher name
TANGER Ltd.
Place of publication
Ostrava, Czech Republic, EU
Event location
Brno
Event date
Jan 1, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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