Steady-state corona discharges in atmospheric air for cleaning and decontamination

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

It is shown that high-voltage corona discharges in atmospheric air have significant potential for bacterial inactivation. Neutral reactive oxygen and nitrogen species and ions generated by the corona discharges act upon the target liquid or solid surfaces and produce chemical or biological effects. The concentration of ions and reactive species including ozone generated by these discharges defines the efficiency of the corona
treatment. In this paper, the chemical (oxidation) effect of direct corona discharges (where ions act upon the target surface) and indirect corona discharges (where ions are screened by a grounded metallic mesh) in atmospheric air is studied by measuring the degree of decolorization of a blue dye dissolved in water. The biological effects of the direct and indirect discharges are studied by observing the degree of bacterial inactivation of gram-negative and gram-positive microorganisms, Escherichia coli and Staphylococcus aureus, seeded on agar plates. The relationship between the ozone concentration and biological efficiency of the corona treatment is evaluated. The obtained
results can be used for optimization of cleaning and inactivation treatment processes based on the use of nonthermal plasma produced under dc energization conditions.
Original languageEnglish
Number of pages8
JournalIEEE Transactions on Plasma Science
Early online date18 Jun 2013
DOIs
Publication statusE-pub ahead of print - 18 Jun 2013

Fingerprint

decontamination
electric corona
Decontamination
Discharge (fluid mechanics)
cleaning
Cleaning
deactivation
biological effects
air
Ions
Air
Ozone
ozone
ions
chemical effects
staphylococcus
liquid surfaces
microorganisms
Escherichia
solid surfaces

Keywords

  • corona discharges
  • atmospheric air
  • decontamination

Cite this

@article{d82476d078d848c0a2e9ecf88e0749c6,
title = "Steady-state corona discharges in atmospheric air for cleaning and decontamination",
abstract = "It is shown that high-voltage corona discharges in atmospheric air have significant potential for bacterial inactivation. Neutral reactive oxygen and nitrogen species and ions generated by the corona discharges act upon the target liquid or solid surfaces and produce chemical or biological effects. The concentration of ions and reactive species including ozone generated by these discharges defines the efficiency of the coronatreatment. In this paper, the chemical (oxidation) effect of direct corona discharges (where ions act upon the target surface) and indirect corona discharges (where ions are screened by a grounded metallic mesh) in atmospheric air is studied by measuring the degree of decolorization of a blue dye dissolved in water. The biological effects of the direct and indirect discharges are studied by observing the degree of bacterial inactivation of gram-negative and gram-positive microorganisms, Escherichia coli and Staphylococcus aureus, seeded on agar plates. The relationship between the ozone concentration and biological efficiency of the corona treatment is evaluated. The obtainedresults can be used for optimization of cleaning and inactivation treatment processes based on the use of nonthermal plasma produced under dc energization conditions.",
keywords = "corona discharges, atmospheric air, decontamination",
author = "Sirui Li and Igor Timoshkin and Michelle MacLean and Scott MacGregor and Mark Wilson and M Given and John Anderson and Tao Wang",
year = "2013",
month = "6",
day = "18",
doi = "10.1109/TPS.2013.2264903",
language = "English",
journal = "IEEE Transactions on Plasma Science",
issn = "0093-3813",

}

TY - JOUR

T1 - Steady-state corona discharges in atmospheric air for cleaning and decontamination

AU - Li, Sirui

AU - Timoshkin, Igor

AU - MacLean, Michelle

AU - MacGregor, Scott

AU - Wilson, Mark

AU - Given, M

AU - Anderson, John

AU - Wang, Tao

PY - 2013/6/18

Y1 - 2013/6/18

N2 - It is shown that high-voltage corona discharges in atmospheric air have significant potential for bacterial inactivation. Neutral reactive oxygen and nitrogen species and ions generated by the corona discharges act upon the target liquid or solid surfaces and produce chemical or biological effects. The concentration of ions and reactive species including ozone generated by these discharges defines the efficiency of the coronatreatment. In this paper, the chemical (oxidation) effect of direct corona discharges (where ions act upon the target surface) and indirect corona discharges (where ions are screened by a grounded metallic mesh) in atmospheric air is studied by measuring the degree of decolorization of a blue dye dissolved in water. The biological effects of the direct and indirect discharges are studied by observing the degree of bacterial inactivation of gram-negative and gram-positive microorganisms, Escherichia coli and Staphylococcus aureus, seeded on agar plates. The relationship between the ozone concentration and biological efficiency of the corona treatment is evaluated. The obtainedresults can be used for optimization of cleaning and inactivation treatment processes based on the use of nonthermal plasma produced under dc energization conditions.

AB - It is shown that high-voltage corona discharges in atmospheric air have significant potential for bacterial inactivation. Neutral reactive oxygen and nitrogen species and ions generated by the corona discharges act upon the target liquid or solid surfaces and produce chemical or biological effects. The concentration of ions and reactive species including ozone generated by these discharges defines the efficiency of the coronatreatment. In this paper, the chemical (oxidation) effect of direct corona discharges (where ions act upon the target surface) and indirect corona discharges (where ions are screened by a grounded metallic mesh) in atmospheric air is studied by measuring the degree of decolorization of a blue dye dissolved in water. The biological effects of the direct and indirect discharges are studied by observing the degree of bacterial inactivation of gram-negative and gram-positive microorganisms, Escherichia coli and Staphylococcus aureus, seeded on agar plates. The relationship between the ozone concentration and biological efficiency of the corona treatment is evaluated. The obtainedresults can be used for optimization of cleaning and inactivation treatment processes based on the use of nonthermal plasma produced under dc energization conditions.

KW - corona discharges

KW - atmospheric air

KW - decontamination

UR - http://www.scopus.com/inward/record.url?scp=84885959556&partnerID=8YFLogxK

U2 - 10.1109/TPS.2013.2264903

DO - 10.1109/TPS.2013.2264903

M3 - Article

JO - IEEE Transactions on Plasma Science

JF - IEEE Transactions on Plasma Science

SN - 0093-3813

ER -