The study and construction of ozone generator using coaxial cylindrical electrodes for surface treatment on microbes

Abstract

This research is the study and construction of ozone generator using coaxial cylindrical electrodes type. Main purpose is to apply ozone gas to control microbes on surfaces via the use of corona discharge principle. The Electric field used for generating corona discharge is at 6 kV 50 Hz. The results obtained revealed that the constructed ozone generator based on the principle of corona discharge via the use of coaxial cylindrical electrodes was able to control and terminate microbes effectively. It is found that the amount of ozone used with the concentration of 561 ppm and contact duration of 0-10 minutes was able to rapidly reduce the amount of microbes from 5 species within first 2 minutes and slowly decrease the number of colonies eventually. The contact time on klebsialla bacillus and including the spore of bacillus were found to be at 8 minutes in order to terminate all of the colonies. The Escherichia coli were also found that the contact time lasted for 10 minutes in order to terminate completely. Other microbe were also observed, including yeast, and was found to hardly survived due to the rapid reduction of number of its own colonies.