TY - JOUR
T1 - Capacity of Ca-based slags for carbon capture
AU - Narindri Rara Winayu, Birgitta
AU - Hsieh, Hsin Yi
AU - Chu, Hsin
N1 - Publisher Copyright:
© 2024 Elsevier Ltd
PY - 2024/7/1
Y1 - 2024/7/1
N2 - Efficiency in reutilization of Ca-based waste for carbon capture has gained high interest. Besides, the CO2 capture mechanism will be influenced by several operating parameters. Observation of carbonation by Ca-based slags (desulfurization slag/De-S, electric arc furnace/EAF slag, and bottom ash/BA) in this study indicated that De-S had the highest Ca(OH)2 content (73%) and largest surface area which led to the best slag utilization. This slag was further applied in the test under various operating conditions including temperature, space velocity, and the content of gas impurity (H2O and SO2). Higher temperature and lower space velocity promoted efficient carbonation. De-S endured the presence of ≤5% water vapor content in the simulated gas. Higher SO2 content in the simulated gas initiated the formation of CaSO4 and declined the CO2 capture capacity. Discussion in this study was complemented by the characterization of slags before and after carbonation process along with reaction kinetics analysis.
AB - Efficiency in reutilization of Ca-based waste for carbon capture has gained high interest. Besides, the CO2 capture mechanism will be influenced by several operating parameters. Observation of carbonation by Ca-based slags (desulfurization slag/De-S, electric arc furnace/EAF slag, and bottom ash/BA) in this study indicated that De-S had the highest Ca(OH)2 content (73%) and largest surface area which led to the best slag utilization. This slag was further applied in the test under various operating conditions including temperature, space velocity, and the content of gas impurity (H2O and SO2). Higher temperature and lower space velocity promoted efficient carbonation. De-S endured the presence of ≤5% water vapor content in the simulated gas. Higher SO2 content in the simulated gas initiated the formation of CaSO4 and declined the CO2 capture capacity. Discussion in this study was complemented by the characterization of slags before and after carbonation process along with reaction kinetics analysis.
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U2 - 10.1016/j.jclepro.2024.142542
DO - 10.1016/j.jclepro.2024.142542
M3 - Article
AN - SCOPUS:85193684661
SN - 0959-6526
VL - 460
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
M1 - 142542
ER -
