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    Experimental investigation of CO2 absorption process using nanofluids
    (Elsevier, 2022) Thakur, Parag; Uslu, Hasan; Sonawane, Shriram S.
    In recent decades, the energy consumption of humans is increased. Growing population and urbanization is the main reasons for the increase in energy consumption. However, most of the energy is produced from the combustion of fossil fuels, and this combustion produces the greenhouse gases like COx, NOx, and methane. These gases are responsible for global warming. Thus, it very much requires discovering new techniques and efficient designs for carbon capture and storage. In recent times, nanofluids have proven a good tool for CO2 absorption. However, the detailed mechanism and scale-up study of the CO2 absorption using nanofluids is not reported in the literature. Among all other nanoparticles, Because of the higher pore size and better CO2 capture ability carbon nanotubes are preferred to study as carbon nanotubes. In this study, we used MWCNT with various concentrations of based nanofluids for the CO2 absorption application. The performance of these nanofluids is compared with each other. We have found that the performance of nanofluid made up of MWCNT as a base nanoparticle and amine as a base fluid gave 42% more absorption than di-ethyl amine alone as a solvent. Absorption of the carbon dioxide in the same nanofluid system with water as a base fluid is 28% only. The high-speed camera is used to capture the bubble dynamics of the CO2 absorption to study the effect of bubble dynamics on absorption efficiency. © 2022 Elsevier Inc. All rights reserved.