@article{Altiner_2018, title={Influences of CO2 Bubbling Types on Preparation of Calcite Nanoparticles by Carbonation Process}, volume={62}, url={https://pp.bme.hu/ch/article/view/10664}, DOI={10.3311/PPch.10664}, abstractNote={<p>This study investigates the comparison of influences of CO<sub>2</sub> bubbling into the calcium hydroxide (Ca(OH)<sub>2</sub>) slurry through a microbubble generator (MBG) and an ordinary CO<sub>2</sub> generator (OCG) on the preparation of calcite nanoparticles by a carbonation method. Each obtained precipitate was characterized using XRD, SEM and particle size analyses. During the carbonation process at each CO<sub>2</sub> flow rates, it was determined that the MBG generates tiny bubbles whereas an increase in CO<sub>2</sub> flow rates led to an increase bubble size when the OCG was used. The flow rate of CO<sub>2</sub> was not an important parameter with using the MBG as calcite nanoparticles were prepared (&lt;125 nm) at each CO<sub>2</sub> flow rates. The necessary time for the complete reaction decreases with an increase in the CO<sub>2</sub> flow rates through the MBG in comparison to the OCG. To produce calcite nanoparticles with a high production recovery in shorter times, the MBG should be adopted to the carbonation reactor.</p>}, number={2}, journal={Periodica Polytechnica Chemical Engineering}, author={Altiner, Mahmut}, year={2018}, pages={209–214} }