Experiment on the Sterilization Performance of Airborne Bacteria in Indoor Spaces using the Variation of Ozone Concentration Generated According to the Discharge Time of a Plasma Module with a Dielectric Barrier Discharge Technology

doi:10.15683/kosdi.2023.6.30.344

All Issue

2023 Vol.19, Issue 2 Preview Page Next Page

Original Article

Experiment on the Sterilization Performance of Airborne Bacteria in Indoor Spaces using the Variation of Ozone Concentration Generated According to the Discharge Time of a Plasma Module with a Dielectric Barrier Discharge Technology 유전체 장벽방전 플라즈마 방전시간에 따른 오존 발생 농도변화의 값을 통한 실내 공간 내 부유세균 살균성능에 대한 실험: 이수연¹ㆍ김창수²*ㆍ김규리³ㆍ임종언⁴
Su Yeon Lee¹, Chang Soo Kim²*, Gyu Ri Kim³, Jong Eon Im⁴; ¹CEO, JRTech Co., Ltd, Ulsan, Republic of Korea
²Professor, Division of Computer Engineering ans AI, Pukyong National University, Busan, Republic of Korea
³Assistant Research Engineer, Research and Development Department, JRTech Co.,Ltd, Ulsan, Republic of Korea
⁴Senior Research Engineer, Strategic Planning Department, JRTech Co.,Ltd, Ulsan, Republic of Korea

30 June 2023. pp. 344-351

PDF

Abstract

Purpose: This study aimed to evaluate the effectiveness of a dielectric barrier discharge (DBD) plasma module for sterilizing airborne bacteria in indoor spaces and measure the concentration of ozone generated during plasma discharge. Method: The DBD plasma module was installed in a 76m^³ space, and air samples were collected under various discharge times to compare the reduction of airborne bacteria. Result: The results showed a significant decrease in airborne bacteria, ranging from 92.057% to 99.999%, with an average ozone concentration of 0.04 ppm, below the reference value. Conclusion: The study suggests that plasma discharge can be used as a means of preventing the spread of airborne bacteria and viruses, while ensuring safety for human exposure.

Keywords

Plasma

DBD Plasma

Dielectric Barrier Discharge

Airborne Bacteria

Ozone

Sterilization

Air sterilizer

Prevention of Spread of Infectious Disease

연구목적: 본 연구는 미생물의 비열 멸균 기술로서 실내 공간 내 유전체 장벽 방전 플라즈마 모듈의 방전시간에 따른 오존 발생 농도변화의 값을 통한 실내 공간 내 부유세균 살균 성능을 분석하였다. 연구방법: 76m³체적 공간의 공조장치의 공기배출 부분에 DBD 플라즈마 모듈을 설치하고 2m 떨어진 거리에서 DBD 플라즈마 처리 시간에 따라 공기 시료를 포집하여 미처리 대조군과 비교하여 부유세균 저감 효과를 분석하였다. 또한 DBD 플라즈마 방전에 따른 오존발생농도를 확인하였다. 연구결과: 대조군의 총 세균수는 1.83~2.00 logCFU/m^³의 결과가 나왔으며, 시험군이 대조군에 비해 실내공기 중 부유세균의 최소 92.057%에서 최대 99.999%의 저감 효과를 보였다. 또한 평균 오존발생농도 0.04ppm으로 오존발생농도 기준인 0.05ppm보다 낮은 결과를 확인하였다. 결론: 인체에 무해한 오존량과 DBD방전 플라즈마량을 조절함으로써 공기 중 부유세균, 바이러스등의 감염병 전파 방지의 수단으로 플라즈마 방전을 사용함에 기준이 될 것으로 사료된다.

키워드

플라즈마

유전체장벽방전플라즈마

부유세균

오존

살균

공기 살균기

감염병 확산 방지

References

Bae, E.K. (2018). The Effects of Argon Dielectric Barrier Discharge Plasma on Bacterial Growth. Master's Thesis, Catholic University of Pusan.
Central Disease Control Headquarters (2023). Detailed Rules of Living Quarantine Guide. (7th ed), Korea Centers for Disease Control and Prevention, Cheongju.
Cho, J.K. (2020). "Suspected cases of COVID-19 air transmission and Building Air Conditioning and Ventilation Methods." Air Cleaning Technology, Vol. 33, No. 4, pp. 9-16.
Han, G.S. (2022). "Plasma sterilization technology, you need to know to use it properly." ETNEWS, 2022.11.27., https://www.etnews.com/20221123000068
Jang, D.J. (2020). "It fell 6.5 meters, stayed for 5 minutes, and got infected..."It's possible to get long-distance droplet infections indoors."" SEDAILY, 2020.12.01., https://www.sedaily.com/NewsView/1ZBIJUO4V8
Jung, J.Y., Kim, Y.J. (2023). "A study on the design and implementation of a thermal imaging temperature screening system for monitoring the risk of infectious diseases in enclosed indoor spaces." KIPS Transactions on Computer and Communication Systems, Vol. 12, No. 2, pp. 85-92.
Kim, K.Y., Paik, N.W., Kim, Y.H., Yoo, K.H. (2018). "Bactericidal efficacy of non-thermal DBD plasma on staphylococcus aureus and Escherichia coli." Journal of Korean Society of Occupational and Environmental Hygiene, Vol. 28, No. 1, pp. 61-79.
Koo, H.B. (2020). "Always-on quarantine air conditioning technology to reduce airborne infectious agents in indoor air." Air Cleaning Technology, Vol. 33, No. 4, pp. 17-31.
Lee, H.J., Song, M.J. (2020). "A study on the effect of microbial sterilization using plasma generator with a flexible electrodes structure." Journal of the Korean Institute of Electrical and Electronic Material Engineers, Vol. 33, No. 1, pp. 70-77.
Lee, S.Y., Jung, H.S. (2022). External Electrode Part and Plasma Generating Device having Thereof, Patent NO. 10-2403123, Korean Intellectual Property Office, Daejeon.
Park, S.J., Park, G.Y., Park, D.H., Koo, H.B., Hwang, J.H. (2020). "Airborne infection risk of respiratory infectious diseases and effectiveness of using filter-embeded mechanical ventilator and infectious source reduction device such as air cleaner." Particle And Aerosol Research, Vol. 16, No. 4, pp. 73-94.

Information

Publisher :The Korean Society of Disaster Information
Publisher(Ko) :한국재난정보학회
Journal Title :Journal of the Society of Disaster Information
Journal Title(Ko) :한국재난정보학회논문집
Volume : 19
No :2
Pages :344-351
DOI :https://doi.org/10.15683/kosdi.2023.6.30.344

[1] Bae, E.K. (2018). The Effects of Argon Dielectric Barrier Discharge Plasma on Bacterial Growth. Master's Thesis, Catholic University of Pusan.

[2] Central Disease Control Headquarters (2023). Detailed Rules of Living Quarantine Guide. (7th ed), Korea Centers for Disease Control and Prevention, Cheongju.

[3] Cho, J.K. (2020). "Suspected cases of COVID-19 air transmission and Building Air Conditioning and Ventilation Methods." Air Cleaning Technology, Vol. 33, No. 4, pp. 9-16.

[4] Han, G.S. (2022). "Plasma sterilization technology, you need to know to use it properly." ETNEWS, 2022.11.27., https://www.etnews.com/20221123000068

[5] Jang, D.J. (2020). "It fell 6.5 meters, stayed for 5 minutes, and got infected..."It's possible to get long-distance droplet infections indoors."" SEDAILY, 2020.12.01., https://www.sedaily.com/NewsView/1ZBIJUO4V8

[6] Jung, J.Y., Kim, Y.J. (2023). "A study on the design and implementation of a thermal imaging temperature screening system for monitoring the risk of infectious diseases in enclosed indoor spaces." KIPS Transactions on Computer and Communication Systems, Vol. 12, No. 2, pp. 85-92.

[7] Kim, K.Y., Paik, N.W., Kim, Y.H., Yoo, K.H. (2018). "Bactericidal efficacy of non-thermal DBD plasma on staphylococcus aureus and Escherichia coli." Journal of Korean Society of Occupational and Environmental Hygiene, Vol. 28, No. 1, pp. 61-79.

[8] Koo, H.B. (2020). "Always-on quarantine air conditioning technology to reduce airborne infectious agents in indoor air." Air Cleaning Technology, Vol. 33, No. 4, pp. 17-31.

[9] Lee, H.J., Song, M.J. (2020). "A study on the effect of microbial sterilization using plasma generator with a flexible electrodes structure." Journal of the Korean Institute of Electrical and Electronic Material Engineers, Vol. 33, No. 1, pp. 70-77.

[10] Lee, S.Y., Jung, H.S. (2022). External Electrode Part and Plasma Generating Device having Thereof, Patent NO. 10-2403123, Korean Intellectual Property Office, Daejeon.

[11] Park, S.J., Park, G.Y., Park, D.H., Koo, H.B., Hwang, J.H. (2020). "Airborne infection risk of respiratory infectious diseases and effectiveness of using filter-embeded mechanical ventilator and infectious source reduction device such as air cleaner." Particle And Aerosol Research, Vol. 16, No. 4, pp. 73-94.

Journal of the Society of Disaster Information ISSN:1976-2208(Print) 2671-5287(Online) 한국재난정보학회논문집

All Issue