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Dissolution Kinetics of Thermally Activated Serpentine for Mineralization at Flue Gas Conditions
(2014)Energy Procedia ~ 12th International Conference on Greenhouse Gas Control Technologies, GHGT-12This communication gives an overview of our study on the dissolution kinetics of thermally activated serpentine (dehydroxylated serpentine). Firstly, we had studied the far-from-equilibrium dissolution kinetics of 75% dehydroxylated lizardite particles in a liquid and gas flow-through reactor at moderate temperatures (30 °C < T < 120 °C) and low CO2 partial pressures (0.1 bar < pCO2 < 2 bar). Over 80% of the Mg was leached from the ...Conference Paper -
Flue gas CO2 mineralization using thermally activated serpentine: From single- to double-step carbonation
(2014)Energy Procedia ~ 12th International Conference on Greenhouse Gas Control Technologies, GHGT-12This communication explores the carbonation potential of activated serpentine at flue gas conditions. A first series of single-step batch experiments was performed varying the temperature and the slurry density to systematically assess the precipitation regime of the relevant Mg-carbonates and the fate of the Si species in solution. The results suggested that the reaction progress was hindered by a passivating layer of re-precipitated ...Conference Paper -
Dissolution of activated serpentine for direct flue-gas mineralization
(2013)Energy Procedia ~ GHGT-11 Proceedings of the 11th International Conference on Greenhouse Gas Control TechnologiesThe dissolution of thermally activated serpentine (75% dehydroxylated) by direct flue-gas mineralization was investigated at far-from-equilibrium (w.r.t mineral dissolution) flow-through operating conditions. Experiments were performed at moderate partial pressures of CO2 (0.1 bar 2 bar CO2) and temperatures (30 °C 90 °C). Thermal activation enabled the dissolution of serpentine at mildly acidic conditions. Both magnesium and silica were ...Conference Paper -
Carbonation of activated serpentine for direct flue gas mineralization
(2013)Energy Procedia ~ GHGT-11 Proceedings of the 11th International Conference on Greenhouse Gas Control TechnologiesResearch in mineral carbonation has moved towards process concepts that combine the capture of CO2 from flue gas with its conversion into stable carbonates. This requires highly reactive source materials that dissolve under lean CO2 pressures and temperatures. Activated serpentine has been used in this study, and its carbonation potential under flue gas conditions has been investigated. Single-step carbonation experiments were performed ...Conference Paper