Assessing CO2 absorption and desorption capabilities of MEA/water mixture

Carbon dioxide emissions from industrial processes, such as power generation and cement manufacturing, are significant drivers of global climate change. Developing effective carbon capture and storage (CCS) technologies is essential to reduce these emissions. One of the most promising methods involves using Monoethanolamine (MEA), a chemical solvent known for its strong reactivity with CO2. In industrial settings, MEA captures CO2 from flue gas streams, forming a stable compound that can be regenerated through heating, releasing the CO2 for storage, and allowing the MEA to be reused.
MEA solutions can capture over 90% of CO2 from these gas streams, making it a widely used solution for CCS. However, repeated absorption and desorption cycles can alter the solvent's structure, potentially affecting its long-term performance. Understanding these molecular changes in MEA after each cycle is key to improving its stability and efficiency.
This proposal aims to explore these changes using total neutron scattering, a technique that reveals detailed molecular interactions. The goal is to determine whether the MEA/water solution returns to its original state after CO2 desorption or if residual CO2 alters its structure. Identifying these changes will enhance the recyclability and effectiveness of MEA, leading to more efficient CO2 capture and helping to combat climate change.