CO2 capture, utilization and storage

The flow of liquid films on complex surfaces is a configuration commonly found in chemical engineering equipment, but also in energy systems. Understanding and modeling the behavior of these flowing liquid films is crucial if we are to better analyze the phenomena at work and optimize the various systems involved.

Lignocellulosic biomass is a renewable resource for which conversion into bioethanol is a promising avenue for producing alternative, low-carbon fuels. Converting this biomass requires a pretreatment step to break it down. However, this process generates compounds that can inhibit the action of enzymes used to hydrolyze cellulose into glucose, thereby reducing the efficiency of this reaction. In order to improve the profitability of such processes, these inhibitors need to be identified, but their presence in a highly complex environment composed of several hundred products is a real challenge.

The average global temperature has already risen by more than 1°C. What is to blame? The increase in the concentration of greenhouse gases, including CO2, in the atmosphere caused by human activities. To limit future increases, technologies known as CCUNET, which combine CO2 utilization and negative emissions, show great promise: capturing, converting, and then storing CO2 from the atmosphere would not only reduce atmospheric CO2 concentrations, but also reduce the extraction of fossil fuels.

IFPEN is co-pilot with the CNRS of PEPR SPLEEN, an upstream research component serving the national acceleration strategy for the decarbonization of Industry.

The hypothesis of elliptical particle motion of eigen body S-waves projected on a supposed common plane of elliptical polarization of any one of the eigen S-wave vectors S1, S2 associated to a given