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Minerals 2014, 4(2), 191-207; doi:10.3390/min4020191

Field Application of Accelerated Mineral Carbonation

Ecosystem Science and Management, University of Wyoming, 1000 E. University Ave, Laramie, WY 82071, USA
Chemical Engineering, Brigham Young University, Provo, UT 84602, USA
Author to whom correspondence should be addressed.
Received: 11 January 2014 / Revised: 15 March 2014 / Accepted: 18 March 2014 / Published: 26 March 2014
(This article belongs to the Special Issue CO2 Sequestration by Mineral Carbonation: Challenges and Advances)
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Globally, coal-fired power plants are the largest industrial source of carbon dioxide (CO2). CO2 emissions from flue gas have potential for direct mineralization with electrostatic precipitator fly ash particles in the field. Demonstration scale accelerated mineral carbonation (AMC) studies were conducted at the Jim Bridger Power Plant, a large coal fired power plant located in Wyoming, USA. AMC produces kinetically rapid conditions for increased rates of mineralization of CO2, sulfur dioxide (SO2) and mercury (Hg) on fly ash particles. Control and AMC reacted fly ash particles were investigated for: change in carbon (expressed as CaCO3), sulfur (expressed as SO42−), and mercury (Hg) contents; topology and surface chemical composition by scanning electron microscope/energy dispersive X-ray spectroscopy analysis; chemical distribution of trace elements; and aqueous mineral solubility by the toxicity characteristic leaching procedure. Results of the AMC process show an increase in C, S, and Hg on AMC fly ash particles suggesting that multiple pollutants from flue gas can be removed through this direct mineral carbonation process. Results also suggest that the AMC process shifts soluble trace elements in fly ash to less leachable mineral fractions. The results of this study can provide insight into potential successful field implementation of AMC.
Keywords: accelerated mineral carbonation; fly ash particles; carbon dioxide; flue gas; coal fired power station; trace element; solubility; chemical fractionation accelerated mineral carbonation; fly ash particles; carbon dioxide; flue gas; coal fired power station; trace element; solubility; chemical fractionation

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Reynolds, B.; Reddy, K.J.; Argyle, M.D. Field Application of Accelerated Mineral Carbonation. Minerals 2014, 4, 191-207.

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