Research progress and challenges in hydrate-based carbon dioxide capture applications

Xiaolin Wang, Fengyuan Zhang and Wojciech Lipiński

Applied Energy, 2020, vol. 269, issue C, No S0306261920304402

Abstract: Climate change lends urgency to measures towards emission reduction. Carbon capture and storage is a technique that enables separation and storage of CO2 from gas mixtures before emission. Among various carbon capture methods, hydrate-based carbon capture is recognised as a promising technology due to its high CO2 storage capacity and low cost. This paper reviews recent research progress of hydrate-based carbon dioxide capture and sequestration, which is expatiated based on three stages. It discusses: (i) the influence of operating conditions on gas–water mass transfer in the mixing stage; (ii) the effects of thermodynamic promoters to tune the phase equilibrium and kinetic promoters to prompt hydrate formation and separation in the hydrate formation and capture stage; (iii) influencing factors of CH4–CO2 replacement and long-term CO2 sequestration in the sequestration stage. Further, research challenges, namely the phase equilibrium in high-pressure regions, low gas uptake and CO2 gas selectivity, contradictory experimental findings, and overlooked technical issues, are summarised. Suggestions are given for future research directions.

Keywords: Hydrate-based CO2 capture; CO2 hydrate structure; Thermodynamics; Formation kinetics (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (28)

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DOI: 10.1016/j.apenergy.2020.114928

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