Acinetobacter Baumannii Sterilization Using DC Corona Discharge

In this work, a corona discharge system with array electrode was built for the rapid sterilization of a resistant pathogen ( Acinetobacter baumannii ). The electrical parameters, discharge pattern, ozone generation, and optic emission spectra were used to characterize the corona plasma. The discharg...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on plasma science 2021-01, Vol.49 (1), p.317-325
Main Authors: Liu, Tiejian, Zeng, Yuxuan, Chen, Jialin, Wei, Deqian, Zeng, Qi, Fu, Yuxin, Fu, Yunqing, Yang, Fengzhu, Feng, Fada
Format: Article
Language:English
Subjects:
<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">Acinetobacter baumannii
Corona
corona discharge
Discharges (electric)
Electric corona
Electric potential
Emission spectra
Energy efficiency
Gases
Hospitals
Inductors
Microorganisms
nonthermal plasma
Ozone
Plasmas
Positive corona
Power management
Sterilization
Voltage
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this work, a corona discharge system with array electrode was built for the rapid sterilization of a resistant pathogen ( Acinetobacter baumannii ). The electrical parameters, discharge pattern, ozone generation, and optic emission spectra were used to characterize the corona plasma. The discharge current and power of positive corona were larger than those of negative at the same applied voltage. The G-value of ozone generation of positive corona was about 7.31 times larger than that of negative corona, suggesting that the positive corona has higher energy efficiency. The {A} . baumannii sterilization efficiency of corona plasma was much higher than that of using ozone (at the same ozone concentration level). As for negative corona, 99.99% A. baumannii sterilization efficiency was achieved within 9-min treatment with 50-ppm ozone produced. Moreover, the A. baumannii sterilization efficiency of positive corona was higher than that of negative corona at the same applied voltage or discharge power, confirming that the energy efficiency of sterilization of positive corona was higher than that of negative corona. The optic emission spectra suggested that active species such as excited molecules, ions, and radicals were generated in the corona discharge. The as-produced active species played important roles in the sterilization process.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2020.3042427