Abstract
The granulation of calcium carbonate (CaCO3) exhibited high industrial demand due to its wider application and importance in cement, paper, glass and steel manufacturing. This paper investigated the granulation kinetics of CaCO3 through the fluidized-bed homogeneous granulation (FBHG) process during the homogenous nucleation stage. The CaOH solution was used as source of Ca2+ reactant, while K2CO3 solution as source of CO32− precipitant. The mechanism followed the pseudo-second order kinetics. The calcium cation attracts the carbonate anion to form CaCO3 through a double displacement chemical reaction. The calcium-is-to-carbonate molar ratio ([Ca2+]/[CO32−]) was varied into 1.25 to 2.50, with constant values of pH = 10 ± 0.2, influent carbonate concentration = 10 mM and total influx flow rate = 60 mL min−1. The ideal [Ca2+]/[CO32−] condition was found to be at 1.50 that means the precipitation of CaCO3 grew and stayed inside the reactor. At the same condition, granules of diameter size of 1 mm to 2 mm were collected with a subrounded shape and smooth surface as shown by its surface morphology. The characterization analysis also verified the high purity of CaCO3-aragonite granules precipitated through the FBHG process.
| Original language | English |
|---|---|
| Article number | 122879 |
| Journal | Chemical Engineering Journal |
| Volume | 382 |
| DOIs | |
| Publication status | Published - 2020 Feb 15 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Environmental Chemistry
- Chemical Engineering(all)
- Industrial and Manufacturing Engineering
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Calcium carbonate granulation in a fluidized-bed reactor : Kinetic, parametric and granule characterization analyses. / Sioson, Arianne S.; Choi, Angelo Earvin Sy; de Luna, Mark Daniel G.; Huang, Yao Hui; Lu, Ming Chun.
In: Chemical Engineering Journal, Vol. 382, 122879, 15.02.2020.Research output: Contribution to journal › Article
TY - JOUR
T1 - Calcium carbonate granulation in a fluidized-bed reactor
T2 - Kinetic, parametric and granule characterization analyses
AU - Sioson, Arianne S.
AU - Choi, Angelo Earvin Sy
AU - de Luna, Mark Daniel G.
AU - Huang, Yao Hui
AU - Lu, Ming Chun
PY - 2020/2/15
Y1 - 2020/2/15
N2 - The granulation of calcium carbonate (CaCO3) exhibited high industrial demand due to its wider application and importance in cement, paper, glass and steel manufacturing. This paper investigated the granulation kinetics of CaCO3 through the fluidized-bed homogeneous granulation (FBHG) process during the homogenous nucleation stage. The CaOH solution was used as source of Ca2+ reactant, while K2CO3 solution as source of CO32− precipitant. The mechanism followed the pseudo-second order kinetics. The calcium cation attracts the carbonate anion to form CaCO3 through a double displacement chemical reaction. The calcium-is-to-carbonate molar ratio ([Ca2+]/[CO32−]) was varied into 1.25 to 2.50, with constant values of pH = 10 ± 0.2, influent carbonate concentration = 10 mM and total influx flow rate = 60 mL min−1. The ideal [Ca2+]/[CO32−] condition was found to be at 1.50 that means the precipitation of CaCO3 grew and stayed inside the reactor. At the same condition, granules of diameter size of 1 mm to 2 mm were collected with a subrounded shape and smooth surface as shown by its surface morphology. The characterization analysis also verified the high purity of CaCO3-aragonite granules precipitated through the FBHG process.
AB - The granulation of calcium carbonate (CaCO3) exhibited high industrial demand due to its wider application and importance in cement, paper, glass and steel manufacturing. This paper investigated the granulation kinetics of CaCO3 through the fluidized-bed homogeneous granulation (FBHG) process during the homogenous nucleation stage. The CaOH solution was used as source of Ca2+ reactant, while K2CO3 solution as source of CO32− precipitant. The mechanism followed the pseudo-second order kinetics. The calcium cation attracts the carbonate anion to form CaCO3 through a double displacement chemical reaction. The calcium-is-to-carbonate molar ratio ([Ca2+]/[CO32−]) was varied into 1.25 to 2.50, with constant values of pH = 10 ± 0.2, influent carbonate concentration = 10 mM and total influx flow rate = 60 mL min−1. The ideal [Ca2+]/[CO32−] condition was found to be at 1.50 that means the precipitation of CaCO3 grew and stayed inside the reactor. At the same condition, granules of diameter size of 1 mm to 2 mm were collected with a subrounded shape and smooth surface as shown by its surface morphology. The characterization analysis also verified the high purity of CaCO3-aragonite granules precipitated through the FBHG process.
UR - http://www.scopus.com/inward/record.url?scp=85072899701&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85072899701&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2019.122879
DO - 10.1016/j.cej.2019.122879
M3 - Article
AN - SCOPUS:85072899701
VL - 382
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
M1 - 122879
ER -