Optimization of CO2 desorption from Fe2O3 nanofluid-based hybrid amines: A Taguchi design approach

The objective for this research was to utilize hybrid amine doped with Fe2O3 nano-particles for absorbing CO2. The nano-fluid was examined for optimizing the desorption rate as well as the regeneration percent of the solvent by applying the Taguchi design methodology. Optimization on desorption was made by a blend of monoethanolamine (MEA)/triethanolamine (TEA) as well as introducing iron oxide nano-particles in order to increase mass as well as heat transfer. The effects on four vital parameters, that is, stirrer speed, nanoparticle concentration, nanoparticle size, as well as temperature, were analyzed systematically by a Taguchi L60 orthogonal array consisting of 60 experimental runs. The investigation showed that greater stirring rates as well as nano-particle diameters significantly enhanced CO2 desorption rates, as well as that the temperature became the dominant factor. Increasing the concentration of nano-particles beyond 0.1 vol.% offered diminishing returns on investment. ANOVA testing discovered that stirrer speed produced the highest significance followed by nano-particle diameter as well as temperature. In general, we found that optimizable nano-fluid compositions can significantly enhance the effectiveness of CO2 desorption as well as show great promise as a viable approach toward more efficient carbon capture systems.