Article pubs.acs.org/IECR
Experimental Design and Data Analysis for Accurate Estimation of Reaction Kinetics and Conversion for Carbon Mineralization Greeshma Gadikota,† Edward J. Swanson,† Huangjing Zhao,‡ and Ah-Hyung Alissa Park*,†,‡ †
Department of Chemical Engineering and ‡Department of Earth and Environmental Engineering, Columbia University in the City of New York, New York, New York 10027, United States ABSTRACT: Silicate minerals such as olivine (Mg2SiO4) and serpentine [Mg3(OH)4(Si3O5)] can react with CO2 to form mineral carbonates to permanently store CO2. Despite significant advancements in carbon mineralization, major discrepancies in the reported kinetics exist because of inconsistencies among various experimental methodologies, the heterogeneity and aging of the minerals, and inadequate fast kinetics and morphological data to probe the reaction mechanisms. In this work, it was found that aged and freshly ground olivine produce very different carbonation yields. A new mineral cleaning protocol to remove fines (
