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Yang Jia-xi,Gao Dan,Qi You-wei,Zhang Heng 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.8
Carbon dioxide (CO2) emitted by fossil energy combustion is related to the greenhouse effect. To furtherstudy the motion dynamics of CO2 bubbles in various solutions so as to better absorb them, a CO2 bubble experimentalplatform was built. The growth and motion of a single CO2 bubble were experimented in five concentrations ofNaOH, NaHCO3 solutions and five viscosity deionized waters, photographed with a high-speed camera and importedinto PyCharm for analysis. Based on this, four kinds of CO2 bubbles were experimentally studied. The results show thatthe viscosity leads to the increase of rising time; the maximum rise time is 0.518 s when the viscosity is 100 mPa·s, theaspect ratio of CO2 bubble in solution, there will be an “L” distribution, and the minimum rise time is close to risingafter the bubble is separated from the injector. NaHCO3 inhibits the reaction between NaOH solution and CO2, resultingin the cross-section ratio change decreasing. The concentration of NaOH solution most conducive to CO2absorption is 0.039 g/ml and 0.058 g/ml.