TY - GEN
T1 - Portable Cold Plasma Sterilization Device Based on Dielectric Barrier Discharge and Its Characteristics
AU - Lian, Xiuyun
AU - He, Feng
AU - Yao, Jianxiong
AU - Li, Jiaxin
AU - Feng, Juan
AU - Deng, Chengzhi
AU - Ouyang, Jiting
N1 - Publisher Copyright:
© 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2023
Y1 - 2023
N2 - For handling the drawbacks of large volume, complex operation and high cost of circuit realization of existing cold plasma sterilization equipment, a portable cold plasma sterilization device incorporating the micro electric power supply technology with surface dielectric barrier discharge (SDBD) structure was proposed in this paper. The discharge characteristics, emission spectrum, active particles and O3 concentration of plasma generator were studied, and the sterlization experiment was conducted with the sterilization device. The results show that the discharge filament around the SDBD linear electrode are uniform, the discharge power is no more than 5 W. The emission spectrum are mainly composed of N I, N2 SPS, N2+ FNS, O I and OH radical lines. The O3 concentration within 3 mm from the discharge electrode reached 70 ppm, but O3 concentration beyond 5 cm is very low. The sterilization device which moves with a homogeneously speed can completely kill Escherichia coli (E.coli) and Staphylococcus aureus (S.aureus) in the petri dish (diameter 90 mm) within 15 s; The applied voltage and action distance have a significant effect on the sterilization effect, with the best applied voltage of 4.5 kV and action distance of 3 mm. This device has a lot of advantages, such as simple operation, high sterilization efficiency, low concentration of by-products (say, residual O3, nitrogen oxide, etc.) and low noise.
AB - For handling the drawbacks of large volume, complex operation and high cost of circuit realization of existing cold plasma sterilization equipment, a portable cold plasma sterilization device incorporating the micro electric power supply technology with surface dielectric barrier discharge (SDBD) structure was proposed in this paper. The discharge characteristics, emission spectrum, active particles and O3 concentration of plasma generator were studied, and the sterlization experiment was conducted with the sterilization device. The results show that the discharge filament around the SDBD linear electrode are uniform, the discharge power is no more than 5 W. The emission spectrum are mainly composed of N I, N2 SPS, N2+ FNS, O I and OH radical lines. The O3 concentration within 3 mm from the discharge electrode reached 70 ppm, but O3 concentration beyond 5 cm is very low. The sterilization device which moves with a homogeneously speed can completely kill Escherichia coli (E.coli) and Staphylococcus aureus (S.aureus) in the petri dish (diameter 90 mm) within 15 s; The applied voltage and action distance have a significant effect on the sterilization effect, with the best applied voltage of 4.5 kV and action distance of 3 mm. This device has a lot of advantages, such as simple operation, high sterilization efficiency, low concentration of by-products (say, residual O3, nitrogen oxide, etc.) and low noise.
KW - Cold Plasma
KW - SDBD
KW - Sterilization
KW - active substances
UR - http://www.scopus.com/inward/record.url?scp=85161432172&partnerID=8YFLogxK
U2 - 10.1007/978-981-99-1576-7_8
DO - 10.1007/978-981-99-1576-7_8
M3 - Conference contribution
AN - SCOPUS:85161432172
SN - 9789819915750
T3 - Springer Proceedings in Physics
SP - 73
EP - 84
BT - Proceedings of the 4th International Symposium on Plasma and Energy Conversion, ISPEC 2022
A2 - Dai, Dong
A2 - Zhang, Cheng
A2 - Fang, Zhi
A2 - Lu, Xinpei
PB - Springer Science and Business Media Deutschland GmbH
T2 - 4th International Symposium on Plasma and Energy Convention, ISPEC 2022
Y2 - 14 October 2022 through 16 October 2022
ER -