Basic research progress on marine CO2 hydrate sequestration
This review aims to explore the thermodynamic and kinetic characteristics of CO2 hydrates in seawater,with a focus on the influence of salinity on hydrate formation and stability.By comprehensively analyzing the existing literature,the effects of temperature,pressure and salinity in seawater on the formation and stability of CO2 hydrates are discussed.Several common equilibrium condition models for CO2 hydrates in saltwater systems were elaborated,followed by a summary of the effects of seawater systems on the formation rate and stability of CO2 hydrates,as well as the inhibitory effects of different salt ions on CO2 hydrate formation.Finally,through the evaluation and summary of seawater CO2 hydrate storage in recent years,the main problem at present is that the research on CO2 hydrates in seawater and marine mud systems is not sufficient.Future research directions mainly focus on marine mud as a porous medium that can replace hydrate formation promoters,in order to provide reference for the industrial application of CO2 hydrate marine storage technology and the study of CO2 hydrates.
CO2 sequestrationhydratecarbon emission reductionthermodynamicsdynamics
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