A laboratory-scale apparatus for studying gamma-ray irradiated carbon dioxide reduction in carbon dioxide - water systems

A laboratory-scale apparatus for studying γ ray irradiation-induced CO2 reduction in CO2-H2O systems was reported. The apparatus allows the continual monitoring of H2, CO, and hydrocarbon compound such as CH4 and C2H6, which are expected to be produced during the γ ray irradiation process of CO2-H2O systems containing various chemicals. The apparatus was consisted of a stainless steel cell, a water cycling and monitoring system, and a gas cycling and monitoring system. In the gas cycling and monitoring system, two gas chromatographs with TCD and FID detectors were used for monitoring inorganic gas (H2 and O2) and hydrocarbon (CH4 and C2H6), respectively. In the water cycling and monitoring system, pH was monitored and chemicals could be added into the steel cell by a pump. The experimental results show that the apparatus could be used for study of γ ray induced CO2 reduction. (author)