Otabir et al. (2025): Geochemical Impacts of CO2 Mineralization in Carbonate and Basalt Formations: A Critical Review on Challenges and Future Outlook
Prince N. Y. M. Otabir, Aaditya Khanal, Fatick Nath IN: Energy & Fuels, 2025, https://doi.org/10.1021/acs.energyfuels.4c04424
Although sandstone reservoirs have been widely used for Carbon capture and storage (CCS) due to their favorable properties, their effectiveness is limited by slow mineral trapping. This review explores carbonate and basaltic formations as alternative CO2 storage solutions. Basalt formations contain highly reactive minerals that promote rapid CO2 mineralization. Pilot studies have demonstrated successful mineralization within 2 years. Carbonate formations also show promise for efficient CO2 trapping. However, several challenges must be addressed. These include complex interactions between CO2 and rock substrates, difficulties characterizing carbonate formations, and variable behavior in basalt formations under different conditions. This review comprehensively reviews and analyzes the current state of the art on the dissolution and mineralization processes in carbonate and basalt formations.