Abstract:

In the face of the crisis caused by the deteriorating greenhouse effect,countries have agreed to take measures to re-duce carbon dioxide emissions.China has promised to peak its carbon emissions around 2030.However,carbon dioxide emis-sions control and capture（CCS） remains a major global environmental challenge.Carbon dioxide sequestration has been the direction and focus of researchers,who also attempts to introduce a new method,i.e.carbon dioxide utilization to achieve more thorough and efficient carbon capture and sequestration.Some studies have pointed out that mineralization is a new direction of carbon dioxide utilization,and its advantages of environmental protection and low cost have attracted people′s attention.Carbon capture and utilization by seawater has promoted the further research of carbon dioxide mineralization under another threat of freshwater shortage,which not only achieves the fixed utilization of CO₂,but also solves the problem of seawater pre-treatment or brine waste utilization from the desalination plant.The research progress of carbon dioxide capture,fixation and utilization methods in recent years was summarized.Through the analysis of the advantages and disadvantages of various methods,it was found that the concept of carbon utilization has injected new vitality into CCS.

Key words: carbon dioxide, CCS, utilization, mineralization, seawater