Effect of Operating Variables on the Morphology of Precipitated Calcium Carbonate in a Slurry Bubble Reactor 


Vol. 16,  No. 2, pp. 124-131, Jun.  2010


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  Abstract

Effects of Ca(OH)2 concentration (0.16~0.64 wt%), surfactant concentration (2~16 wt%), total volumetric flow rate (3~6 L/min) and CO2 volume fraction (0.3~0.6) on morphology, crystal structure, mean particle diameter, aggregation and specific surface area of the precipitated CaCO3 were investigated in the slurry bubble column reactor. Experiments were carried out in acrylic reactor (0.11 m-ID×1.0 m-high) with a internal tube (0.04 m-ID×10 m-high h). The reaction time of CaCO3 synthesis decreased with adding Dispex N40 of the anionic surfactant. The reaction rate of increased with increasing the volumetric flow rate of . From SEM images, the single crystal of increased with increasing the reaction rate in the saturated concentration of Ca(OH)2 (0.16 wt %) and the concentration of Dispex N40 (2 wt%). The mean particle size of CaCO3 varied with adding Dispex N40. In addition, the specific surface area of CaCO3 increased with adding of surfactant (2 wt%) from 35m@/g to 44m@/g at the volumetric flow rate of CO2 (0.9 L/min) and the concentration of Ca(OH)2(0.64 wt %).

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  Cite this article

[IEEE Style]

H. JW, L. Y, L. DH, "Effect of Operating Variables on the Morphology of Precipitated Calcium Carbonate in a Slurry Bubble Reactor," Clean Technology, vol. 16, no. 2, pp. 124-131, 2010. DOI: .

[ACM Style]

Hwang JW, Lee Y, and Lee DH. 2010. Effect of Operating Variables on the Morphology of Precipitated Calcium Carbonate in a Slurry Bubble Reactor. Clean Technology, 16, 2, (2010), 124-131. DOI: .

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