Measuring mutual solubility in the H2O–CO2 system up to 200 bar and 100°C by in situ Raman spectroscopy - Université de Lorraine Access content directly
Journal Articles International Journal of Greenhouse Gas Control Year : 2016

Measuring mutual solubility in the H2O–CO2 system up to 200 bar and 100°C by in situ Raman spectroscopy

Marie-Camille Caumon
Jérôme Sterpenich
Aurélien Randi
  • Function : Author
Jacques Pironon

Abstract

The solubility control in the H2O–CO2system under high pressure is of prime interest in numerousgeochemical systems from hydrothermal fluids to CO2geological storage. However, the number of exper-imental data is scarce in the range of interest of geological storage, especially in the CO2-rich phase. A newexperimental device was built to measure mutual solubility in the CO2–H2O system without samplingby coupling a batch reactor with Raman immersion probes. The system was first calibrated by measuringthe solubility of CO2in water at 100◦C. The results were provided with an accuracy of a few % between40 bar and 200 bar and in agreement with other published experimental data sets and models. The lin-ear correlation between Raman peak intensity and CO2solubility in the aqueous phase was then usedto provide new experimental data of CO2solubility in water at 65◦C from 3 bar to 200 bar. The Ramandata of the CO2-rich phase or supercritical phase are compared to a thermodynamic models and the fewexperimental data available in literature to provide a new data set of H2O–CO2mutual solubility at 100◦Cand up to 200 bar.
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Dates and versions

hal-01343083 , version 1 (20-06-2019)

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Marie-Camille Caumon, Jérôme Sterpenich, Aurélien Randi, Jacques Pironon. Measuring mutual solubility in the H2O–CO2 system up to 200 bar and 100°C by in situ Raman spectroscopy. International Journal of Greenhouse Gas Control, 2016, 47, pp.63-70. ⟨10.1016/j.ijggc.2016.01.034⟩. ⟨hal-01343083⟩
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