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Evaluating the Effectiveness of Ultraviolet-C Lamps for Reducing Escherichia Coli: Distance and Exposure Time

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Innovations in Biomedical Engineering 2023

Part of the book series: Lecture Notes in Networks and Systems ((LNNS,volume 875))

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Abstract

An increasing number of healthcare-associated infections indicates a need to search for the ideal disinfection method. The high biocidal efficacy of the most common disinfection method, UV-C radiation, has been confirmed in laboratory conditions; however, the real biocidal has not been determined yet. UV-C radiation's effectiveness on surface disinfection was evaluated at different distances of bacterial samples (Escherichia coli) from UV-C lamps and exposure times of radiation. The results of microbiological tests were presented as changes in the colony-forming unit (CFU/mL) and average colony size (mean) under monitoring the radiation dose emitted by the radiation source.

The highest percentage reduction of the CFU/mL (83%) was measured at a distance of 10 cm from the UV-C lamp (2 x 36 W253.7 nm), exposed to radiation for one hour. The UV-C radiation is ineffective at a distance higher than one meter on a porous surface, indicating a need for further studies on modifying this method.

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Acknowledgement

This work was founded by Polish National Centre for Research and Development, "Using UV-C technology to reduce transmission SARS-CoV-2 virus and reduction the transmission of infections in hospitals", SZPITALE-JEDNOIMIENNE/57/2020 realized in years 2021–2022.

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Authors and Affiliations

  1. Institute of Material and Biomedical Engineering, Faculty of Mechanical Engineering, University of Zielona Gora, Licealna 9 Street, 65-417, Zielona Gora, Poland

    Kamila Pasik, Katarzyna Arkusz, Tomasz Klekiel, Waldemar Woźniak & Roman Stryjski

Authors
  1. Kamila Pasik
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  2. Katarzyna Arkusz
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  3. Tomasz Klekiel
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  4. Waldemar Woźniak
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  5. Roman Stryjski
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Corresponding author

Correspondence to Kamila Pasik .

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Editors and Affiliations

  1. Faculty of Biomedical Engineering, Silesian University of Technology, Zabrze, Poland

    Marek Gzik

  2. Faculty of Biomedical Engineering, Silesian University of Technology, Zabrze, Poland

    Zbigniew Paszenda

  3. Faculty of Biomedical Engineering, Silesian University of Technology, Zabrze, Poland

    Ewa Piętka

  4. Faculty of Biomedical Engineering, Silesian University of Technology, Zabrze, Poland

    Ewaryst Tkacz

  5. American Heart of Poland S.A., Ustroń, Poland

    Krzysztof Milewski

  6. Faculty of Biomedical Engineering, Silesian University of Technology, Zabrze, Poland

    Jacek Jurkojć

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Pasik, K., Arkusz, K., Klekiel, T., Woźniak, W., Stryjski, R. (2024). Evaluating the Effectiveness of Ultraviolet-C Lamps for Reducing Escherichia Coli: Distance and Exposure Time. In: Gzik, M., Paszenda, Z., Piętka, E., Tkacz, E., Milewski, K., Jurkojć, J. (eds) Innovations in Biomedical Engineering 2023. Lecture Notes in Networks and Systems, vol 875. Springer, Cham. https://doi.org/10.1007/978-3-031-52382-3_24

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