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Synergistic effects of trace concentrations of hydrogen peroxide used in a novel hydrodynamic cavitation device allows for selective removal of cyanobacteria
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SYSNO ASEP 0532637 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Synergistic effects of trace concentrations of hydrogen peroxide used in a novel hydrodynamic cavitation device allows for selective removal of cyanobacteria Author(s) Maršálek, Blahoslav (BU-J) ORCID, SAI
Zezulka, Štěpán (BU-J) ORCID
Maršálková, Eliška (BU-J) ORCID, SAI
Pochylý, F. (CZ)
Rudolf, P. (CZ)Article number 122383 Source Title Chemical Engineering Journal. - : Elsevier - ISSN 1385-8947
Roč. 382, FEB 15 (2020), s. 1-5Number of pages 5 s. Language eng - English Country NL - Netherlands Keywords water treatment ; hydrodynamic cavitation ; algae Subject RIV EH - Ecology, Behaviour OECD category Chemical process engineering R&D Projects GA16-18316S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support BU-J - RVO:67985939 UT WOS 000503381200249 EID SCOPUS 85074695588 DOI 10.1016/j.cej.2019.122383 Annotation 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. Workplace Institute of Botany Contact Martina Bartošová, martina.bartosova@ibot.cas.cz, ibot@ibot.cas.cz, Tel.: 271 015 242 ; Marie Jakšová, marie.jaksova@ibot.cas.cz, Tel.: 384 721 156-8 Year of Publishing 2021 Electronic address http://hdl.handle.net/11104/0311196
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