Abstract
Carbon dioxide (CO_2) is one of the main substances linked to greenhouse effect, and its emission should be reduced. In this study, a CO_2 reduction treatment using an adsorbent and a nonthermal plasma flow is investigated. This treatment comprises a physical adsorption process and nitrogen (N_2) plasma reduction process. In the physical adsorption process, CO_2 is adsorbed by the adsorbent. In the N_2 plasma reduction process, the adsorbed CO_2 is reduced to CO by a nonthermal plasma flow that is generated by a plasma reactor with a circulating N_2 plasma flow. The generated CO can be reused as a fuel. We estimate this experiment results by calculating conversion efficiency of CO_2 to CO. In the N_2 plasma reduction process, the CO concentration reaches approximately 4.8% in maximum, and highest conversion energy efficiency of 11% is obtained.
