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Geosciences 2018, 8(7), 260; https://doi.org/10.3390/geosciences8070260

How Characterization of Particle Size Distribution Pre- and Post-Reaction Provides Mechanistic Insights into Mineral Carbonation

School of Engineering, University of Guelph, Guelph, ON N1G 2W1, Canada
Some contents of this paper also appear in the Proceedings of the 8th World Congress on Particle Technology Meeting (Orlando, USA, 2018), as extended abstract P508057, titled “Particle size characterization in mineral carbonation for understanding reaction fundamentals”.
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Received: 22 June 2018 / Revised: 7 July 2018 / Accepted: 9 July 2018 / Published: 11 July 2018
(This article belongs to the Special Issue Carbon Sequestration)
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Abstract

Mineral carbonation is the conversion of carbon dioxide, in gas form or dissolved in water, to solid carbonates. Materials characterization plays an important role in assessing the potential to use these carbonates in commercial applications, and also aids in understanding fundamental phenomena about the reactions. This paper highlights findings of mechanistic nature made on topics related to mineral carbonation, and that were made possible by assessing particle size, particle size distribution, and other morphological characteristics. It is also shown how particle size data can be used to estimate the weathering rate of carbonated minerals. An extension of the carbonation weathering rate approach is presented, whereby using particle size distribution data it becomes possible to predict the particle size below which full carbonation is obtained, and above which partial carbonation occurs. The paper also overviews the most common techniques to determine the particle size distribution, as well as complementary and alternate techniques. In mineral carbonation research, most techniques have been used as ex situ methods, yet tools that can analyze powders during reaction (in situ and real-time) can provide even more insight into mineral carbonation mechanisms, so researchers are encouraged to adopt such advanced techniques. View Full-Text
Keywords: mineral carbonation; particle size distribution; laser diffraction; carbonation conversion; iron- and steel-making slags; carbonation weathering rate mineral carbonation; particle size distribution; laser diffraction; carbonation conversion; iron- and steel-making slags; carbonation weathering rate
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Dudhaiya, A.; Santos, R.M. How Characterization of Particle Size Distribution Pre- and Post-Reaction Provides Mechanistic Insights into Mineral Carbonation. Geosciences 2018, 8, 260.

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