Energy-efficient solvent regeneration in enzymatic reactive absorption for carbon dioxide capture

摘要: Abstract Although recent studies on the application of enzyme-catalyzed reactive absorption carbon dioxide (CO2) with thermodynamically favorable solvents such as tertiary amine N-methyldiethanolamine (MDEA) have demonstrated competitiveness kinetically primary monoethanolamine (MEA), experimental data desorption CO2 in MDEA are scarce. However, these necessary to validate energetic benefit expected from an process aqueous solvent. To bridge this gap, current work presents results solvent regeneration at pilot scale consideration different flow rates, loadings and applied reboiler duties. Furthermore, a model that accurately describes was developed evaluate energy requirements closed-loop absorption-desorption process. For purpose, extended using previously validated enzymatic determine efficiency overall MEA benchmark requires specific duty approximately 3.8 MJ · kg CO 2 - 1 , it found value could be reduced by more than 40% 2.13 use based