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Supercritical Microfluidics for understanding CO2 / water systems under pressure and temperature : Application to the sustainable management of the anthropogenic CO2

Abstract : CO2 geological storage is a promising strategy to control the anthropogenic CO2 concentration in theatmosphere. Deep saline aquifers (DSA) were identified as viable options since they exhibit largestorage capacity. However, processes inherent to CO2 trapping suffer from a lack of fundamentalknowledge, since there are too few fast and reproducible experimental approaches able to work atgeological storage conditions. Therefore, to address these limitations, we have developed highpressure microreactors, so-called “geological labs on a chip” - GloCs – allowing mimicking porosityand permeability conditions of DSA for:(i) Measuring solubility of CO2 in water and brine through the combination of microsystemsand confocal Raman spectroscopy,(ii) Studying invasion mechanisms of CO2 in geological formations, including in particularbiphasic flows in porous media, phase separation and carbonates precipitation.
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https://tel.archives-ouvertes.fr/tel-00986265
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Na Liu. Supercritical Microfluidics for understanding CO2 / water systems under pressure and temperature : Application to the sustainable management of the anthropogenic CO2. Other. Université Sciences et Technologies - Bordeaux I, 2013. English. ⟨NNT : 2013BOR14923⟩. ⟨tel-00986265⟩

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