CO2 capture and sequestration (CCS) technologies aim to capture carbon dioxide (CO2) from CO2 sources, separate the CO2, and store it in suitable media. CO2 can be captured using various technologies, including absorption, adsorption, cryogenic processes, and membrane gas separation.

Therefore, accurate selection, design, modelling, and optimisation of the processes for CO2 capture and the tuning of the material properties are essential. There are different methods used for CO2 sequestration, e.

g. , (i) geological sequestration, which injects different phases of CO2 into the subsurface; (ii) oceanic storage, which dissolves CO2 into an ocean at different depths; (iii) the solid-phase reaction of CO2 with metal oxides to produce stable carbonates with no risk of CO2 release to the atmosphere; etc.

The flow, transport, and reaction of CO2 during CCS and other related matters are also essential. To address these points, a Special Issue of Clean Technol.

and a reprint with all published papers have been organized which highlight the recent trends and innovative developments in CCS. In particular, these papers highlight the following issues: Socio-political issues related to CCS development and deployment; Fundamental technical issues concerning the development and deployment of CCS; The synthesis of value-added chemicals using captured CO2 in CCS; Applications of mathematical modelling for the development of CCS.

The development of techno-economic costing models for CCS. Overall, this reprint covers a diverse range of topics, including some of the most pressing concerns for the future growth and development of CCS.

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