Module for Developing Regionally Adapted CCS Systems

This study aims to demonstrate a model of a region-specific CCS system through the verification of a small-scale CCS system. The study consists of: (i) elucidation of CO₂ absorption, separation, and storage mechanisms, (ii) development of monitoring methods to evaluate the long-term stability of stored CO₂, and (iii) social and economic assessment of CCS at the municipal scale. Considering the trends in CO₂ emissions in Japan, the development of comprehensive CO₂ management is crucial. Unlike large-scale subsea CO₂ storage at depths exceeding 1,000 m, the study field targets subsurface layers at several hundred meters depth. Since the shallow subsurface beneath residential areas is assumed, elucidating storage mechanisms and monitoring methods is particularly important. Additionally, economic feasibility and understanding by local residents are essential factors. The study is expected to provide new insights into shallow CO₂ storage mechanisms and methods, and, by ensuring long-term storage reliability and obtaining public assessment, to enable comprehensive system proposals for a low-carbon society.