شهریار عصفوری

The increasing emissions of greenhouse gases, particularly CO₂, demand efficient methods for capture and separation. This study explores CO₂ absorption in a fixed-bed column using diethanolamine (DEA), methyldiethanolamine (MDEA), and Fe₃O₄ nanoparticle-enhanced nanofluids. Experiments examined the effects of nanoparticle concentration, liquid and gas flow rates, and pressure on separation efficiency and mass transfer. Results show that DEA achieved up to 90% CO₂ removal, surpassing MDEA due to its faster reaction kinetics. The addition of Fe₃O₄ nanoparticles enhanced absorption, with an optimal concentration of 0.05% achieving a 94% separation efficiency and significantly improving the mass transfer coefficient. However, higher nanoparticle concentrations reduced performance due to increased viscosity and agglomeration. These findings underscore the potential of nanoparticle-enhanced amine solutions for industrial gas separation, providing valuable insights for optimizing separation processes.