Investigation of the effect of Fe ₃O₄ nanoparticles on CO₂ absorption in a fixed-bed column using MDEA & DEA

The increasing emissions of greenhouse gases, particularly CO ₂, demand efficient methods for capture and separation. This study explores CO ₂ absorption in a fixed-bed column using diethanolamine (DEA), methyldiethanolamine (MDEA), and Fe ₃O₄ 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 ۹۰% CO ₂ removal, surpassing MDEA due to its faster reaction kinetics. The addition of Fe ₃O₄ nanoparticles enhanced absorption, with an optimal concentration of ۰.۰۵% achieving a ۹۴% 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.

کلیدواژه ها:

CO₂ absorption ، MDEA ، DEA ، Packed bed ، Nanofluid ، Fe۳O۴