Micro/nanofluid-based carbon-negative process for capturing CO2 from low-carbon flue gas to produce soda ash: Effects and enhancement mechanisms

This paper presents an innovative approach aimed at the efficient capture of low-carbon flue gas with a CO2 concentration of 25%-30% on a large scale and its subsequent fixation into economically valuable soda ash. This carbon-negative process entails a novel micro/nanofluid interface system (MIS) as a principal component. To gain a better understanding of the MIS and enhance its properties, we propose a new MIS compositional strategy that includes the formation mechanism of micro-interfaces, scale prediction and regulation methods, gas content enhancement mechanisms, property calculations, and examination of changes in reaction kinetic equations induced by the studied reaction. This compositional strategy not only unveils the intrinsic mechanisms that drive process intensification but also provides essential reference points for the MIS application on larger scales and in various fields, paving the way for its engineering applications.