New solvent could ‘transform’ gas separation and carbon capture


A new chemical solvent developed at Queen’s University Belfast could transform gas separation and carbon capture after researchers claimed it could save around 30% in energy compared to current processes.

Existing solvents help separate gas mixtures into their pure components, enabling the post-combustion capture of carbon dioxide (CO2) from flue streams before being stored underground.

However, current processes are highly carbon intensive. According to research, 16% of US energy is used in chemical separation processes – the emissions from which are equivalent to several million cars on the road.

A new process developed by researchers at the university focus on the use of a porous liquid solvent, which was found to be much more energy efficient that existing processes.

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