Capacity of Ca-based slags for carbon capture

Birgitta Narindri Rara Winayu; Hsin Yi Hsieh; Hsin Chu

doi:10.1016/j.jclepro.2024.142542

Capacity of Ca-based slags for carbon capture

Birgitta Narindri Rara Winayu, Hsin Yi Hsieh, Hsin Chu

Department of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Article number	142542
Journal	Journal of Cleaner Production
Volume	460
DOIs	https://doi.org/10.1016/j.jclepro.2024.142542
Publication status	Published - 2024 Jul 1

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
General Environmental Science
Strategy and Management
Industrial and Manufacturing Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jclepro.2024.142542

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title = "Capacity of Ca-based slags for carbon capture",

abstract = "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.",

author = "{Narindri Rara Winayu}, Birgitta and Hsieh, {Hsin Yi} and Hsin Chu",

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AU - Narindri Rara Winayu, Birgitta

AU - Hsieh, Hsin Yi

AU - Chu, Hsin

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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Capacity of Ca-based slags for carbon capture

Abstract

All Science Journal Classification (ASJC) codes

UN SDGs

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