Publication detail

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

MARŠÁLEK, B. MARŠÁLKOVÁ, E. ODEHNALOVÁ, K. POCHYLÝ, F. RUDOLF, P. SŤAHEL, P. RÁHEĽ, J. ČECH, J. FIALOVÁ, S. ZEZULKA, Š.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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

Keywords

sinice;kavitace;plazma

Authors

MARŠÁLEK, B.; MARŠÁLKOVÁ, E.; ODEHNALOVÁ, K.; POCHYLÝ, F.; RUDOLF, P.; SŤAHEL, P.; RÁHEĽ, J.; ČECH, J.; FIALOVÁ, S.; ZEZULKA, Š.

Released

18. 12. 2019

Publisher

MDPI

Location

Basel

ISBN

2073-4441

Periodical

Water

Year of study

12

Number

1

State

Swiss Confederation

Pages from

1

Pages to

14

Pages count

14

URL

https://www.mdpi.com/2073-4441/12/1/8

Full text in the Digital Library

http://hdl.handle.net/11012/195706

BibTex

@article{BUT165675,
  author="Blahoslav {Maršálek} and Eliška {Maršálková} and Klára {Odehnalová} and František {Pochylý} and Pavel {Rudolf} and Pavel {Sťahel} and Jozef {Ráheľ} and Jan {Čech} and Simona {Fialová} and Štěpán {Zezulka}",
  title="Removal of Microcystis aeruginosa through the Combined Effect of Plasma Discharge and Hydrodynamic Cavitation",
  journal="Water",
  year="2019",
  volume="12",
  number="1",
  pages="1--14",
  doi="10.3390/w12010008",
  issn="2073-4441",
  url="https://www.mdpi.com/2073-4441/12/1/8"
}