Evaluation of factors affecting mineral carbonation of CO 2 using coal fly ash in aqueous solutions under ambient conditions

Ho Young Jo; Jin Ha Kim; Young Jae Lee; Meehye Lee; Suk Joo Choh

doi:10.1016/j.cej.2011.12.023

Evaluation of factors affecting mineral carbonation of CO ₂ using coal fly ash in aqueous solutions under ambient conditions

Ho Young Jo, Jin Ha Kim, Young Jae Lee, Meehye Lee, Suk Joo Choh

Department of Earth and Environmental Sciences

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

73 Citations (Scopus)

Abstract

This study examined the factors affecting mineral carbonation to sequester CO ₂ using coal fly ash (CFA) in aqueous solutions under ambient temperature and pressure conditions. Serial extraction and carbonation tests were conducted on CFA obtained from a coal-fired power plant as the following conditions were varied: solid dosage, CaO content, CO ₂ flow rate, and solvent type. The solid dosage, CaO content, and solvent type affected the Ca extraction efficiency, which was well correlated with the carbonation efficiency. In addition, at a given Ca extraction efficiency, the CO ₂ flow rate and the solvent type affected the rate and extent of CFA carbonation. Based on the study results, the CO ₂ sequestration capacity of CFA under ambient temperature and pressure conditions was approximately 0.008kg of CO ₂ per 1kg of CFA at the experimental test conditions (CaO content: 7wt.%, solid dosage: 100g/L, CO ₂ flow rate: 2mL/min, and solvent: DI water).

Original language	English
Pages (from-to)	77-87
Number of pages	11
Journal	Chemical Engineering Journal
Volume	183
DOIs	https://doi.org/10.1016/j.cej.2011.12.023
Publication status	Published - 2012 Feb 15

Keywords

Aqueous carbonation
CO
Coal fly ash
Mineral carbonation
Sequestration

ASJC Scopus subject areas

Chemistry(all)
Environmental Chemistry
Chemical Engineering(all)
Industrial and Manufacturing Engineering

Access to Document

10.1016/j.cej.2011.12.023

Cite this

@article{396cc476d9914a2d97b296ce53501bb2,

title = "Evaluation of factors affecting mineral carbonation of CO 2 using coal fly ash in aqueous solutions under ambient conditions",

abstract = "This study examined the factors affecting mineral carbonation to sequester CO 2 using coal fly ash (CFA) in aqueous solutions under ambient temperature and pressure conditions. Serial extraction and carbonation tests were conducted on CFA obtained from a coal-fired power plant as the following conditions were varied: solid dosage, CaO content, CO 2 flow rate, and solvent type. The solid dosage, CaO content, and solvent type affected the Ca extraction efficiency, which was well correlated with the carbonation efficiency. In addition, at a given Ca extraction efficiency, the CO 2 flow rate and the solvent type affected the rate and extent of CFA carbonation. Based on the study results, the CO 2 sequestration capacity of CFA under ambient temperature and pressure conditions was approximately 0.008kg of CO 2 per 1kg of CFA at the experimental test conditions (CaO content: 7wt.%, solid dosage: 100g/L, CO 2 flow rate: 2mL/min, and solvent: DI water).",

keywords = "Aqueous carbonation, CO, Coal fly ash, Mineral carbonation, Sequestration",

author = "Jo, {Ho Young} and Kim, {Jin Ha} and Lee, {Young Jae} and Meehye Lee and Choh, {Suk Joo}",

note = "Funding Information: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (grant number: 2009-0076614 ).",

year = "2012",

month = feb,

day = "15",

doi = "10.1016/j.cej.2011.12.023",

language = "English",

volume = "183",

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journal = "Chemical Engineering Journal",

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T1 - Evaluation of factors affecting mineral carbonation of CO 2 using coal fly ash in aqueous solutions under ambient conditions

AU - Jo, Ho Young

AU - Kim, Jin Ha

AU - Lee, Young Jae

AU - Lee, Meehye

AU - Choh, Suk Joo

N1 - Funding Information: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (grant number: 2009-0076614 ).

PY - 2012/2/15

Y1 - 2012/2/15

N2 - This study examined the factors affecting mineral carbonation to sequester CO 2 using coal fly ash (CFA) in aqueous solutions under ambient temperature and pressure conditions. Serial extraction and carbonation tests were conducted on CFA obtained from a coal-fired power plant as the following conditions were varied: solid dosage, CaO content, CO 2 flow rate, and solvent type. The solid dosage, CaO content, and solvent type affected the Ca extraction efficiency, which was well correlated with the carbonation efficiency. In addition, at a given Ca extraction efficiency, the CO 2 flow rate and the solvent type affected the rate and extent of CFA carbonation. Based on the study results, the CO 2 sequestration capacity of CFA under ambient temperature and pressure conditions was approximately 0.008kg of CO 2 per 1kg of CFA at the experimental test conditions (CaO content: 7wt.%, solid dosage: 100g/L, CO 2 flow rate: 2mL/min, and solvent: DI water).

AB - This study examined the factors affecting mineral carbonation to sequester CO 2 using coal fly ash (CFA) in aqueous solutions under ambient temperature and pressure conditions. Serial extraction and carbonation tests were conducted on CFA obtained from a coal-fired power plant as the following conditions were varied: solid dosage, CaO content, CO 2 flow rate, and solvent type. The solid dosage, CaO content, and solvent type affected the Ca extraction efficiency, which was well correlated with the carbonation efficiency. In addition, at a given Ca extraction efficiency, the CO 2 flow rate and the solvent type affected the rate and extent of CFA carbonation. Based on the study results, the CO 2 sequestration capacity of CFA under ambient temperature and pressure conditions was approximately 0.008kg of CO 2 per 1kg of CFA at the experimental test conditions (CaO content: 7wt.%, solid dosage: 100g/L, CO 2 flow rate: 2mL/min, and solvent: DI water).

KW - Aqueous carbonation

KW - CO

KW - Coal fly ash

KW - Mineral carbonation

KW - Sequestration

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