Number of the records: 1

Removal of Microcystis aeruginosa through the Combined Effect of Plasma Discharge and Hydrodynamic Cavitation

SYSNO ASEP	0521990
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Removal of Microcystis aeruginosa through the Combined Effect of Plasma Discharge and Hydrodynamic Cavitation
Author(s)	Maršálek, Blahoslav (BU-J)_{ORCID, SAI} Maršálková, Eliška (BU-J)_{ORCID, SAI} Odehnalová, Klára (BU-J)_{ORCID, RID} Pochylý, F. (CZ) Rudolf, P. (CZ) Sťahel, P. (CZ) Rahel, J. (CZ) Čech, J. (CZ) Fialová, S. (CZ) Zezulka, Štěpán (BU-J)_ORCID
Article number	8
Source Title	Water. - : MDPI Roč. 12, č. 1 (2020), s. 1-14
Number of pages	14 s.
Language	eng - English
Country	CH - Switzerland
Keywords	drinking water ; water treatment ; cyanobacterial bloom
Subject RIV	EH - Ecology, Behaviour
OECD category	Environmental sciences (social aspects to be 5.7)
R&D Projects	GA16-18316S GA ČR - Czech Science Foundation (CSF)
Method of publishing	Open access
Institutional support	BU-J - RVO:67985939
UT WOS	000519847200008
EID SCOPUS	85079497060
DOI	10.3390/w12010008
Annotation	Cyanobacterial water blooms represent toxicological, ecological and technological problems around the globe. When present in raw water used for drinking water production, one of the best strategies is to remove the cyanobacterial biomass gently before treatment, avoiding cell destruction and cyanotoxins release. This paper presents a new method for the removal of cyanobacterial biomass during drinking water pre-treatment that combines hydrodynamic cavitation with cold plasma discharge. Cavitation produces press stress that causes Microcystis gas vesicles to collapse. The cyanobacteria then sink, allowing for removal by sedimentation. The cyanobacteria showed no signs of revitalisation, even after seven days under optimal conditions with nutrient enrichment, as photosynthetic activity is negatively affected by hydrogen peroxide produced by plasma burnt in the cavitation cloud. Using this method, cyanobacteria can be removed in a single treatment, with no increase in microcystin concentration. This novel technology appears to be highly promising for continual treatment of raw water inflow in drinking water treatment plants and will also be of interest to those wishing to treat surface waters without the use of algaecides.
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/11104/0311200

Number of the records: 1