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

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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 languageEnglish
Pages (from-to)77-87
Number of pages11
JournalChemical Engineering Journal
Volume183
DOIs
Publication statusPublished - 2012 Feb 15

Fingerprint

Coal Ash
Carbonation
Coal
Carbon Monoxide
Fly ash
fly ash
Minerals
aqueous solution
coal
mineral
Flow rate
coal-fired power plant
carbon sequestration
temperature
evaluation
Power plants
rate
Temperature
Water
dosage

Keywords

  • Aqueous carbonation
  • CO
  • Coal fly ash
  • Mineral carbonation
  • Sequestration

ASJC Scopus subject areas

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

Cite this

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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 Suk-Joo Choh",
year = "2012",
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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

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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