Decomposition characteristics of carbon dioxide by gas tunnel-type plasma jet

The increase of warm-room gas is thought to cause the rise of atmosphere temperature, which is called the warm-room effect. Therefore, the decomposition treatment of carbon dioxide (CO2) gas is an important research subject in order to solve the global environmental problem. In this study, a high-energy plasma process was used to decompose CO2 gas as a warm-room gas, and the decomposition mechanism was clarified by varying the plasma operation conditions. The possibility of transforming of the CO2 gas to various resources was also discussed. Firstly, the performance test of the gas tunnel-type plasma jet used for decomposition of CO2 was conducted, and decomposition characteristics of CO2 gas by the gas tunnel-type plasma jet was determined under various conditions. The decomposition ratio of CO2 was about 30%, when the power input was P=8 kW, and the CO2 content in argon was 10%. Secondly, the improvement of operating conditions of the plasma jet was discussed in order to enhance its performance.