A new development in carbon capture technology could provide an efficient and inexpensive way for natural gas power plants to remove carbon dioxide (CO2) from flue emissions, a necessary step to reduce greenhouse gas emissions.
Developed by researchers at the University of California, Berkeley, Lawrence Berkeley National Laboratory and ExxonMobil, the new technique uses a highly porous material called a metal-organic framework (MOF), modified with nitrogen-containing amine molecules to capture the CO2 and low temperature steam to flush out the CO2 for other uses or to sequester it underground.
Experiments carried out by the researchers showed a six times greater capacity from removing CO2 from flue gas than current anime-based technology, capturing more than 90% of the CO2 emitted.
“For CO2 capture, steam stripping – where you can use direct contact with steam to take off the CO2 – has been a sort of holy grail for the field. It is rightly seen as the cheapest way to do it,” said Senior Researcher Jeffrey Long and UC Berkeley Professor.
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