IJET 2025 Vol.17(1): 7-11
DOI: 10.7763/IJET.2025.V17.1294
The Effect of Temperature and Humidity on the Decomposition Rate of Chlorine Dioxide
S. Fukuma1, T. Matsuo2, T. Miura3,4, H. Shimadera2,
and
A. Kondo2
1. Division of Sustainable Energy and Environment Engineering, School of Engineering, Osaka University, Suita-shi, Japan
2. Division of Sustainable Energy and Environment Engineering, Graduate School of Engineering, Osaka University, Suita-shi, Japan
3. Taiko Pharmaceutical co., ltd., Soraku-gun, Japan
4. Departmentof Space Infection Control, Graduate School of Medicine, Osaka University, Suita-shi, Japan
Email: fukuma.s@ea.see.eng.osaka-u.ac.jp (S.F.); matsuo@see.eng.osaka-u.ac.jp (T.M.); miura@seirogan.co.j (T.M.);
shimadera@see.eng.osaka-u.ac.jp (H.S.); kondo@see.eng.osaka-u.ac.jp (A.K.)
*Corresponding author
Manuscript received October 15, 2024; revised November 1, 2024; accepted November 29, 2024; published January 22, 2025.
Abstract—Chlorine dioxide (ClO
2) is commonly utilized for virus elimination, sanitization, deodorization, and anti-fungal purposes. When improving indoor air quality using chlorine dioxide, it is necessary to distribute it indoors at appropriate concentrations. However, ClO
2 decomposes in space and absorbs the wall surface. The purpose of this paper is to clarify the effect of temperature and humidity on the decomposition rate of ClO
2. We conducted decomposition experiments in the chamber and analyzed the concentration of ClO
2 using ion chromatography. The results indicate that humidity has a much greater impact than temperature on the decomposition rate of ClO
2. We proposed a two-variable function of temperature and humidity for the decomposition rate of ClO
2 that represents the experimental results. Although the Arrhenius equation would explain the effect of temperature, the reaction mechanism between chlorine dioxide and water vapor is still unclear.
Keywords—chlorine dioxide, decompostion rate, chamber experiment, effect of temperature and humidity
Cite: S. Fukuma, T. Matsuo, T. Miura, H. Shimadera, and A. Kondo, "The Effect of Temperature and Humidity on the Decomposition Rate of Chlorine Dioxide,"
International Journal of Engineering and Technology, vol. 17, no. 1, pp. 7-11, 2025.
Copyright © 2025 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
