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http://dx.doi.org/10.4491/KSEE.2013.35.5.340

Capture of Carbon Dioxide Emitted from Coal-Fired Power Plant Using Seawater  

Han, Sang-Jun (Department of Environmental Engineering, The Catholic University of Korea)
Kim, Dae-Kyeong (Department of Environmental Engineering, The Catholic University of Korea)
Lee, Jae-Hee (Department of Environmental Engineering, The Catholic University of Korea)
Park, Sang-Hyeok (Department of Environmental Engineering, The Catholic University of Korea)
Wee, Jung-Ho (Department of Environmental Engineering, The Catholic University of Korea)
Publication Information
Journal of Korean Society of Environmental Engineers / v.35, no.5, 2013 , pp. 340-349 More about this Journal
Abstract
The present paper investigates the availability of seawater as the absorbents to capture carbon dioxide ($CO_2$) emitted from the coal fired power plant (CFPP). For the purpose of the study, readily obtainable alkali materials in CFPP such as coal fly ash (FA), NaOH and $Ca(OH)_2$ are added to seawater to prepare the absorbents and their $CO_2$ capture performances are discussed. FA can be effectively used the additives to increase $CO_2$ capture capacity of seawater to a some extent. This is ascribed that some alkali components in FA are leached into seawater and they contribute to $CO_2$ capture in the solution. However, their leaching amount and rate are restricted by the various ions in seawater. The performance of NaOH added seawater is even lower than that of NaOH added water because $OH^-$ is substantially consumed on $Ma(OH)_2$ production prior to carbonation. $CO_2$ absorption capacity of $Ca(OH)_2$ added seawater is slightly larger than that of $Ca(OH)_2$ added water. This is because that $Ca^{2+}$ which originally present in raw seawater can participate in carbonation reaction.
Keywords
Carbon Dioxide Capture; Coal Fired Power Plant; Seawater; Fly-Ash; Carbonation;
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Times Cited By KSCI : 8  (Citation Analysis)
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