Synergistic effects of trace concentrations of hydrogen peroxide used in a novel hydrodynamic cavitation device allows for selective removal of cyanobacteria

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F20%3A00532637" target="_blank" >RIV/67985939:_____/20:00532637 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26210/20:PU134557

Výsledek na webu

<a href="http://hdl.handle.net/11104/0311196" target="_blank" >http://hdl.handle.net/11104/0311196</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cej.2019.122383" target="_blank" >10.1016/j.cej.2019.122383</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Synergistic effects of trace concentrations of hydrogen peroxide used in a novel hydrodynamic cavitation device allows for selective removal of cyanobacteria

Popis výsledku v původním jazyce

Improved and verified rotating device generating hydrodynamic cavitation (RDGHC) is inspired by so called cavitation heaters. The force and cavitation efficiency of the device is adjustable and can be modified for selective removal of cyanobacteria from water, while algal growth and metabolic activity is not affected. Known published devices using hydrodynamic cavitation need several cycles to reach cyanobacterial elimination (12-200 cycles, 5-200 min of treatment) while this device can remove 99% of cyanobacteria after one single cycle within 0.1 min. Effect on cyanobacterial removal was synergically enhanced by addition of trace concentrations of hydrogen peroxide (45-100 µM H2O2) what is 10-1000 times lower than that used in previous studies. Device can increase and modify temperature, what is additional advantage in potential technological applications. We discuss the potential use of this device in a broad spectrum of technological processes and especially its combination with hydrogen peroxide, ozone, or e.g. ferrates, what can open new areas in enhanced advanced oxydation technologies or as an alternative to sonochemical, microwave assisted or electrochemical processes in chemical engineering where large volumes of liquid have to be treated.

Název v anglickém jazyce

Synergistic effects of trace concentrations of hydrogen peroxide used in a novel hydrodynamic cavitation device allows for selective removal of cyanobacteria

Popis výsledku anglicky

Improved and verified rotating device generating hydrodynamic cavitation (RDGHC) is inspired by so called cavitation heaters. The force and cavitation efficiency of the device is adjustable and can be modified for selective removal of cyanobacteria from water, while algal growth and metabolic activity is not affected. Known published devices using hydrodynamic cavitation need several cycles to reach cyanobacterial elimination (12-200 cycles, 5-200 min of treatment) while this device can remove 99% of cyanobacteria after one single cycle within 0.1 min. Effect on cyanobacterial removal was synergically enhanced by addition of trace concentrations of hydrogen peroxide (45-100 µM H2O2) what is 10-1000 times lower than that used in previous studies. Device can increase and modify temperature, what is additional advantage in potential technological applications. We discuss the potential use of this device in a broad spectrum of technological processes and especially its combination with hydrogen peroxide, ozone, or e.g. ferrates, what can open new areas in enhanced advanced oxydation technologies or as an alternative to sonochemical, microwave assisted or electrochemical processes in chemical engineering where large volumes of liquid have to be treated.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/GA16-18316S" target="_blank" >GA16-18316S: Principy a mechanismy eliminace mikroorganismů hydrodynamickou kavitací</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Journal

ISSN

1385-8947

e-ISSN

—

Svazek periodika

382

Číslo periodika v rámci svazku

FEB 15

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

1-5

Kód UT WoS článku

000503381200249

EID výsledku v databázi Scopus

2-s2.0-85074695588