A review on carbon dioxide capture and storage technology using coal fly ash

► The potential of the CCS technology using coal fly ash (FA) is reviewed. ► Alkali species in FA are dissolved and consumed to sequestrate CO2 in the wet process. ► FA can be used as a support or as a raw material of dry sorbents to capture CO2. ► The technology can stabilize the harmful components in FA during the process. ► Therefore, the technology may be another option of CCS to a limited extent.