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

Kód výsledku v 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>

Výsledek na webu

<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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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20801 - Environmental biotechnology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

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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Počet stran výsledku

6

Strana od-do

404-409

Název nakladatele

TANGER Ltd.

Místo vydání

Ostrava, Czech Republic, EU

Místo konání akce

Brno

Datum konání akce

1. 1. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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