Hydrodynamic cavitation and cold plasma: Innovative approaches for water treatment and disinfection

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F26%3A0201056" target="_blank" >RIV/00216305:26210/26:0201056 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/25:00144369

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1088/1755-1315/1483/1/012008" target="_blank" >https://iopscience.iop.org/article/10.1088/1755-1315/1483/1/012008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1755-1315/1483/1/012008" target="_blank" >10.1088/1755-1315/1483/1/012008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydrodynamic cavitation and cold plasma: Innovative approaches for water treatment and disinfection

Popis výsledku v původním jazyce

Hydrodynamic cavitation (HC) is a phenomenon that occurs when a liquid flows at a high velocity through a constricted space or over a sharp edge, causing the pressure to drop to vapor pressure and the formation of bubbles within the liquid. These bubbles then collapse violently, producing high pressures, shock waves and temperatures (hot spots) that can lead to chemical reactions. In summary, HC is the formation and collapse of bubbles or cavities within a liquid due to high velocity flow, which can produce intense physical and chemical effects. In hydraulic machinery it is connected with many negative effects such as erosion, pressure pulsations, vibrations and noise. However HC also has important applications in water treatment, where it can be used to disinfect water by disrupting the cell walls of microorganisms (cyanobacteria, bacteria). Several devices utilizing using HC or HC in combination with hydrogen peroxide or ozone will be presented. Nevertheless efficiency of HC only is limited. New principle of exploiting HC based on synergistic effect with cold plasma ignited within the vaporous region was recently invented by present authors' team. This device features production of significant concentration of hydrogen peroxide, strong electric field and UV irradiation. Combined action of these phenomena leads to very strong disinfection effects that not only disinfect water from biological contamination but also degrades chemical pollution (residuals of pharmaceuticals, estrogenes, pesticides and other organic molecules).

Název v anglickém jazyce

Hydrodynamic cavitation and cold plasma: Innovative approaches for water treatment and disinfection

Popis výsledku anglicky

Hydrodynamic cavitation (HC) is a phenomenon that occurs when a liquid flows at a high velocity through a constricted space or over a sharp edge, causing the pressure to drop to vapor pressure and the formation of bubbles within the liquid. These bubbles then collapse violently, producing high pressures, shock waves and temperatures (hot spots) that can lead to chemical reactions. In summary, HC is the formation and collapse of bubbles or cavities within a liquid due to high velocity flow, which can produce intense physical and chemical effects. In hydraulic machinery it is connected with many negative effects such as erosion, pressure pulsations, vibrations and noise. However HC also has important applications in water treatment, where it can be used to disinfect water by disrupting the cell walls of microorganisms (cyanobacteria, bacteria). Several devices utilizing using HC or HC in combination with hydrogen peroxide or ozone will be presented. Nevertheless efficiency of HC only is limited. New principle of exploiting HC based on synergistic effect with cold plasma ignited within the vaporous region was recently invented by present authors' team. This device features production of significant concentration of hydrogen peroxide, strong electric field and UV irradiation. Combined action of these phenomena leads to very strong disinfection effects that not only disinfect water from biological contamination but also degrades chemical pollution (residuals of pharmaceuticals, estrogenes, pesticides and other organic molecules).

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/GA22-11456S" target="_blank" >GA22-11456S: Výzkum fundamentálních interakcí hydrodynamické kavitace a nízkoteplotního plazmatu ke zvýšení dezinfekčních účinků</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název statě ve sborníku

IOP Conference Series-Earth and Environmental Science

ISBN

—

ISSN

1755-1307

e-ISSN

1755-1315

Počet stran výsledku

6

Strana od-do

—

Název nakladatele

Iop Publishing Ltd

Místo vydání

BRISTOL

Místo konání akce

Barcelona

Datum konání akce

28. 6. 2006

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001524443000008