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Eduin Yesid Mora Mendoza
Universidad Pedagógica y Tecnológica de Colombia UPTC, Tunja, Colombia

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Original paper
Published: 19 April 2021 in Brazilian Journal of Chemical Engineering
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The decomposition of synthetic siderite (FeCO3) in air atmosphere at room temperature conditions was studied. Siderite was formed by mechanochemical reaction of Fe3O4 and graphite at high CO2 pressure in the presence of water. Kinetics of decomposition reaction was studied over period up to 9 days and it is shown that decomposition reaction obeys geometrical contraction solid-state reaction mechanism model. It was found that the water influences not only the kinetics of siderite formation but also its stability. Siderite completely decomposes at ambient conditions yielding magnetite (Fe3O4) and hematite (Fe2O3) which can reversibly re-absorb carbon dioxide.

ACS Style

Eduin Yesid Mora Mendoza; Armando Sarmiento Santos; Enrique Vera López; Vadym Drozd; Andriy Durygin; Jiuhua Chen; Surendra K. Saxena. Siderite decomposition at room temperature conditions for CO2 capture applications. Brazilian Journal of Chemical Engineering 2021, 38, 351 -359.

AMA Style

Eduin Yesid Mora Mendoza, Armando Sarmiento Santos, Enrique Vera López, Vadym Drozd, Andriy Durygin, Jiuhua Chen, Surendra K. Saxena. Siderite decomposition at room temperature conditions for CO2 capture applications. Brazilian Journal of Chemical Engineering. 2021; 38 (2):351-359.

Chicago/Turabian Style

Eduin Yesid Mora Mendoza; Armando Sarmiento Santos; Enrique Vera López; Vadym Drozd; Andriy Durygin; Jiuhua Chen; Surendra K. Saxena. 2021. "Siderite decomposition at room temperature conditions for CO2 capture applications." Brazilian Journal of Chemical Engineering 38, no. 2: 351-359.

Journal article
Published: 14 October 2019 in Processes
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Iron ore was studied as a CO2 absorbent. Carbonation was carried out by mechanochemical and high temperature–high pressure (HTHP) reactions. Kinetics of the carbonation reactions was studied for the two methods. In the mechanochemical process, it was analyzed as a function of the CO2 pressure and the rotation speed of the planetary ball mill, while in the HTHP process, the kinetics was studied as a function of pressure and temperature. The highest CO2 capture capacities achieved were 3.7341 mmol of CO2/g of sorbent in ball milling (30 bar of CO2 pressure, 400 rpm, 20 h) and 5.4392 mmol of CO2/g of absorbent in HTHP (50 bar of CO2 pressure, 100 °C and 4 h). To overcome the kinetics limitations, water was introduced to all carbonation experiments. The calcination reactions were studied in Argon atmosphere using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) analysis. Siderite can be decomposed at the same temperature range (100 °C to 420 °C) for the samples produced by both methods. This range reaches higher temperatures compared with pure iron oxides due to decomposition temperature increase with decreasing purity. Calcination reactions yield magnetite and carbon. A comparison of recyclability (use of the same material in several cycles of carbonation–calcination), kinetics, spent energy, and the amounts of initial material needed to capture 1 ton of CO2, revealed the advantages of the mechanochemical process compared with HTHP.

ACS Style

Eduin Yesid Mora Mendoza; Armando Sarmiento Santos; Enrique Vera López; Vadym Drozd; Andriy Durygin; Jiuhua Chen; Surendra K. Saxena. Siderite Formation by Mechanochemical and High Pressure–High Temperature Processes for CO2 Capture Using Iron Ore as the Initial Sorbent. Processes 2019, 7, 735 .

AMA Style

Eduin Yesid Mora Mendoza, Armando Sarmiento Santos, Enrique Vera López, Vadym Drozd, Andriy Durygin, Jiuhua Chen, Surendra K. Saxena. Siderite Formation by Mechanochemical and High Pressure–High Temperature Processes for CO2 Capture Using Iron Ore as the Initial Sorbent. Processes. 2019; 7 (10):735.

Chicago/Turabian Style

Eduin Yesid Mora Mendoza; Armando Sarmiento Santos; Enrique Vera López; Vadym Drozd; Andriy Durygin; Jiuhua Chen; Surendra K. Saxena. 2019. "Siderite Formation by Mechanochemical and High Pressure–High Temperature Processes for CO2 Capture Using Iron Ore as the Initial Sorbent." Processes 7, no. 10: 735.

Journal article
Published: 21 May 2019 in Journal of Materials Research and Technology
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Carbon dioxide capture/release reactions using magnetite, Fe3O4, and hematite, Fe2O3, as sorbents were studied. Kinetics of mechanically activated chemical reactions between iron oxides and CO2 was investigated as a function of CO2 pressure and planetary ball mill process parameters. It was found that complete carbonation of iron oxides can be accomplished at room temperature and elevated CO2 pressure (10–30 bar). Siderite calcination was studied in vacuum and argon atmospheres. FeCO3 can be decomposed at 367 °C yielding magnetite, carbon and/or iron. This mixture can reversibly re-absorb carbon dioxide in multiple carbonation–calcination cycles. These results suggest that siderite or iron oxides are prospective and efficient reversible sorbents for CO2 capture.

ACS Style

Eduin Yesid Mora Mendoza; Armando Sarmiento Santos; Enrique Vera López; Vadym Drozd; Andriy Durygin; Jiuhua Chen; Surendra K Saxena. Iron oxides as efficient sorbents for CO2 capture. Journal of Materials Research and Technology 2019, 8, 2944 -2956.

AMA Style

Eduin Yesid Mora Mendoza, Armando Sarmiento Santos, Enrique Vera López, Vadym Drozd, Andriy Durygin, Jiuhua Chen, Surendra K Saxena. Iron oxides as efficient sorbents for CO2 capture. Journal of Materials Research and Technology. 2019; 8 (3):2944-2956.

Chicago/Turabian Style

Eduin Yesid Mora Mendoza; Armando Sarmiento Santos; Enrique Vera López; Vadym Drozd; Andriy Durygin; Jiuhua Chen; Surendra K Saxena. 2019. "Iron oxides as efficient sorbents for CO2 capture." Journal of Materials Research and Technology 8, no. 3: 2944-2956.