Science Daily January 23, 2023
Rigorous process modeling and techno-economic analyses are limited for emerging carbon capture technologies. A team of researchers in the US (PNNL, industry, Washington State University) has developed four CO2-Binding Organic Liquids (CO2BOLs), all water-lean solvents, as promising options towards energy-effective and low-cost carbon capture from point sources. CO2BOLs can capture up to 97–99% CO2 from coal fired plant. The estimated carbon capture cost is about 12–23% less expensive than the conventional aqueous amine technology. In addition to vapor liquid equilibrium and kinetics (key properties for aqueous solvents), viscosity, volatility, and hydrophobicity, also have strong impacts on the performance of water-lean solvents such as CO2BOLs. It has been proved that water-lean formulations can minimize water condensation and vaporization, leading to a 36% energy saving compared with aqueous amines. According to the researchers their work could be used to evaluate other emerging carbon capture technologies… read more. TECHNICAL ARTICLE
Graphical abstract. Credit: Journal of Cleaner Production, Volume 388, 15 February 2023, 135696