| 초록 |
A foam decontaminant is composed of a surfactant and nanoparticles, and a chemical decontamination agent made of Ce(IV) in nitric acid. Ce(IV) will be reduced to Ce(III) through the decontamination process. Oxidizing cerium(III) can be reused as a decontamination agent, Ce(IV). The study was undertaken to determine the optimal conditions for oxidation treatment in the regeneration of Ce(III) into Ce(IV) in the foam decontaminant containing TBS surfactant. The oxidation conversion rate of Ce(III) to Ce(IV) was increased with an increase in the flow rate of the gas mixture during the oxidation time of 7.5 hours, and the oxidation conversion rate at a flow rate of 3.0 LPM was 100%. The effect of the TBS surfactant on the oxidation behavior of Ce(III) to Ce(IV) were investigated. Similar oxidation behaviors of Ce(III) appeared, regardless of the presence of a surfactant. The oxidation of Ce(III) with ozone is effective in nanoparticle-based foam decontaminant containing TBS surfactant. |
