Analysis of the Impact of Nanofluids on the Improvement in CO2 Absorption using Taguchi Method

Abstract

Capturing Carbon dioxide (CO₂) has been the most crucial issue due to the dangerous impact of emissions of CO₂ on the warming of globe and climate change. A novel class of solvent has been effectively employed in absorption technology in recent decades to eliminate CO₂. The process of employing nanofluids to enhance CO₂ uptake is receiving a lot of attention. However, other studies are needed to enhance the nanofluid absorption rate. The purpose of this study was to use nanofluid (based on amines) to optimize the absorption process for CO₂ from flue gas. The technique was designed to extract CO₂ from exhaust gas. This paper discusses the removal of CO₂ from flue gas and parameter adjustments that increase overall removal efficiency. The nanoparticle concentration, stirring speed, and nanoparticle size were all varied during the tests. The experimental design using Taguchi method was applied to determine the optimal conditions of nanofluid for the process of absorption. Taguchi experimental design to investigate the perfect setting for the highest possible rate of CO₂ absorption. The best settings were found to be a nanoparticle beginning concentration of 0.01 vol%, a stirrer speed of 4 rpm, and a nano size of 60 nm, according to the results of multiple regression and signal to noise ratio (S/N). Additionally, the analysis of variance (ANOVA) was used to determine the relative significance of each factor. The results show that the proportion of contributions were as follows: mixing speed (rpm) 46.56%, nano concentration (vol.%) 4.33%, and nano size (nm) 43.18%. The most useful parameter was the mixing speed (rpm). The experimental and anticipated values agreed well with regression analysis (R²=97.26%), and the findings of the confirmation test demonstrated that the CO₂ absorption rate was 0.0029 g/s; a success that is highly advantageous for industrial uses.