It was proposed that the ozone gas recirculation system was used for an effective method for the highly concentrated ozone gas generation operated at dielectric barrier discharge. In this paper, the author evaluated a characteristic of our propose gas recirculation system. The results showed that the ozone gas recirculation system could effectively bleach the indigo carmine solution in a short time. Indigo carmine solution was bleached by ozone gas. Therefore, it was found that the gas recirculation system play an essential role in generating of the highly concentrated ozone gas.
dielectric barrier discharge
ozone gas
gas recirculation system
indigo carmine