Effects of CO 2 Bubble Size, CO 2 Flow Rate and Calcium Source on the Size and Specific Surface Area of CaCO 3 Particles

Jun-Hwan Bang, Kyungsun Song, Sangwon Park, Chi Wan Jeon, Seung-Woo Lee and Wonbaek Kim
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Jun-Hwan Bang: Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro, Yuseong-gu, Daejeon 305350, Korea
Kyungsun Song: Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro, Yuseong-gu, Daejeon 305350, Korea
Sangwon Park: Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro, Yuseong-gu, Daejeon 305350, Korea
Chi Wan Jeon: Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro, Yuseong-gu, Daejeon 305350, Korea
Seung-Woo Lee: Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro, Yuseong-gu, Daejeon 305350, Korea
Wonbaek Kim: Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro, Yuseong-gu, Daejeon 305350, Korea

Energies, 2015, vol. 8, issue 10, 1-10

Abstract: The effects of CO 2 flow rate and calcium source on the particle size (PS) and specific surface area (SSA) of CaCO 3 particles were evaluated using microbubble generator (MBG) and air diffuser (AD) systems. The carbonate mineralization (CM) and precipitated calcium carbonate (PCC) methods were employed to produce CaCO 3 using gypsum and Ca(OH) 2 as the calcium sources, respectively. The CaCO 3 particles prepared using the MBG were smaller (with larger specific surface area) than those obtained using the conventional AD, regardless of the calcium source. The average PSs were 2–3 and 7–9 ?m for the MBG and AD systems, respectively. Moreover, the PS and SSA of the particles prepared using the MBG were not greatly affected by the CO 2 injection rate. This study clearly demonstrates that the use of an MBG ensures the stable production of fine CaCO 3 particles using various calcium sources and a wider range of CO 2 flow rates.

Keywords: carbonate mineralization; CO 2 fixation; CaCO 3; particle size; specific surface area; microbubble (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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